gcc/fortran/gfortran.h

   1 /* gfortran header file
   2    Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
   3    2009, 2010
   4    Free Software Foundation, Inc.
   5    Contributed by Andy Vaught
   6
   7 This file is part of GCC.
   8
   9 GCC is free software; you can redistribute it and/or modify it under
  10 the terms of the GNU General Public License as published by the Free
  11 Software Foundation; either version 3, or (at your option) any later
  12 version.
  13
  14 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  15 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  16 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  17 for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with GCC; see the file COPYING3.  If not see
  21 <http://www.gnu.org/licenses/>.  */
  22
  23 #ifndef GCC_GFORTRAN_H
  24 #define GCC_GFORTRAN_H
  25
  26 /* It's probably insane to have this large of a header file, but it
  27    seemed like everything had to be recompiled anyway when a change
  28    was made to a header file, and there were ordering issues with
  29    multiple header files.  Besides, Microsoft's winnt.h was 250k last
  30    time I looked, so by comparison this is perfectly reasonable.  */
  31
  32 /* Declarations common to the front-end and library are put in
  33    libgfortran/libgfortran_frontend.h  */
  34 #include "libgfortran.h"
  35
  36
  37 #include "intl.h"
  38 #include "coretypes.h"
  39 #include "input.h"
  40 #include "splay-tree.h"
  41 /* The following ifdefs are recommended by the autoconf documentation
  42    for any code using alloca.  */
  43
  44 /* AIX requires this to be the first thing in the file.  */
  45 #ifdef __GNUC__
  46 #else /* not __GNUC__ */
  47 #ifdef HAVE_ALLOCA_H
  48 #include <alloca.h>
  49 #else /* do not HAVE_ALLOCA_H */
  50 #ifdef _AIX
  51 #pragma alloca
  52 #else
  53 #ifndef alloca                  /* predefined by HP cc +Olibcalls */
  54 char *alloca ();
  55 #endif /* not predefined */
  56 #endif /* not _AIX */
  57 #endif /* do not HAVE_ALLOCA_H */
  58 #endif /* not __GNUC__ */
  59
  60 /* Major control parameters.  */
  61
  62 #define GFC_MAX_SYMBOL_LEN 63   /* Must be at least 63 for F2003.  */
  63 #define GFC_MAX_BINDING_LABEL_LEN 126 /* (2 * GFC_MAX_SYMBOL_LEN) */
  64 #define GFC_MAX_LINE 132        /* Characters beyond this are not seen.  */
  65 #define GFC_LETTERS 26          /* Number of letters in the alphabet.  */
  66
  67 #define MAX_SUBRECORD_LENGTH 2147483639   /* 2**31-9 */
  68
  69
  70 #define free(x) Use_gfc_free_instead_of_free()
  71 #define gfc_is_whitespace(c) ((c==' ') || (c=='\t'))
  72
  73 #ifndef NULL
  74 #define NULL ((void *) 0)
  75 #endif
  76
  77 /* Stringization.  */
  78 #define stringize(x) expand_macro(x)
  79 #define expand_macro(x) # x
  80
  81 /* For the runtime library, a standard prefix is a requirement to
  82    avoid cluttering the namespace with things nobody asked for.  It's
  83    ugly to look at and a pain to type when you add the prefix by hand,
  84    so we hide it behind a macro.  */
  85 #define PREFIX(x) "_gfortran_" x
  86 #define PREFIX_LEN 10
  87
  88 #define BLANK_COMMON_NAME "__BLNK__"
  89
  90 /* Macro to initialize an mstring structure.  */
  91 #define minit(s, t) { s, NULL, t }
  92
  93 /* Structure for storing strings to be matched by gfc_match_string.  */
  94 typedef struct
  95 {
  96   const char *string;
  97   const char *mp;
  98   int tag;
  99 }
 100 mstring;
 101
 102
 103
 104 /*************************** Enums *****************************/
 105
 106 /* Used when matching and resolving data I/O transfer statements.  */
 107
 108 typedef enum
 109 { M_READ, M_WRITE, M_PRINT, M_INQUIRE }
 110 io_kind;
 111
 112 /* The author remains confused to this day about the convention of
 113    returning '0' for 'SUCCESS'... or was it the other way around?  The
 114    following enum makes things much more readable.  We also start
 115    values off at one instead of zero.  */
 116
 117 typedef enum
 118 { SUCCESS = 1, FAILURE }
 119 gfc_try;
 120
 121 /* This is returned by gfc_notification_std to know if, given the flags
 122    that were given (-std=, -pedantic) we should issue an error, a warning
 123    or nothing.  */
 124
 125 typedef enum
 126 { SILENT, WARNING, ERROR }
 127 notification;
 128
 129 /* Matchers return one of these three values.  The difference between
 130    MATCH_NO and MATCH_ERROR is that MATCH_ERROR means that a match was
 131    successful, but that something non-syntactic is wrong and an error
 132    has already been issued.  */
 133
 134 typedef enum
 135 { MATCH_NO = 1, MATCH_YES, MATCH_ERROR }
 136 match;
 137
 138 typedef enum
 139 { FORM_FREE, FORM_FIXED, FORM_UNKNOWN }
 140 gfc_source_form;
 141
 142 /* Expression node types.  */
 143 typedef enum
 144 { EXPR_OP = 1, EXPR_FUNCTION, EXPR_CONSTANT, EXPR_VARIABLE,
 145   EXPR_SUBSTRING, EXPR_STRUCTURE, EXPR_ARRAY, EXPR_NULL, EXPR_COMPCALL, EXPR_PPC
 146 }
 147 expr_t;
 148
 149 /* Array types.  */
 150 typedef enum
 151 { AS_EXPLICIT = 1, AS_ASSUMED_SHAPE, AS_DEFERRED,
 152   AS_ASSUMED_SIZE, AS_IMPLIED_SHAPE, AS_UNKNOWN
 153 }
 154 array_type;
 155
 156 typedef enum
 157 { AR_FULL = 1, AR_ELEMENT, AR_SECTION, AR_UNKNOWN }
 158 ar_type;
 159
 160 /* Statement label types.  */
 161 typedef enum
 162 { ST_LABEL_UNKNOWN = 1, ST_LABEL_TARGET,
 163   ST_LABEL_BAD_TARGET, ST_LABEL_FORMAT
 164 }
 165 gfc_sl_type;
 166
 167 /* Intrinsic operators.  */
 168 typedef enum
 169 { GFC_INTRINSIC_BEGIN = 0,
 170   INTRINSIC_NONE = -1, INTRINSIC_UPLUS = GFC_INTRINSIC_BEGIN,
 171   INTRINSIC_UMINUS, INTRINSIC_PLUS, INTRINSIC_MINUS, INTRINSIC_TIMES,
 172   INTRINSIC_DIVIDE, INTRINSIC_POWER, INTRINSIC_CONCAT,
 173   INTRINSIC_AND, INTRINSIC_OR, INTRINSIC_EQV, INTRINSIC_NEQV,
 174   /* ==, /=, >, >=, <, <=  */
 175   INTRINSIC_EQ, INTRINSIC_NE, INTRINSIC_GT, INTRINSIC_GE,
 176   INTRINSIC_LT, INTRINSIC_LE,
 177   /* .EQ., .NE., .GT., .GE., .LT., .LE. (OS = Old-Style)  */
 178   INTRINSIC_EQ_OS, INTRINSIC_NE_OS, INTRINSIC_GT_OS, INTRINSIC_GE_OS,
 179   INTRINSIC_LT_OS, INTRINSIC_LE_OS,
 180   INTRINSIC_NOT, INTRINSIC_USER, INTRINSIC_ASSIGN,
 181   INTRINSIC_PARENTHESES, GFC_INTRINSIC_END /* Sentinel */
 182 }
 183 gfc_intrinsic_op;
 184
 185
 186 /* This macro is the number of intrinsic operators that exist.
 187    Assumptions are made about the numbering of the interface_op enums.  */
 188 #define GFC_INTRINSIC_OPS GFC_INTRINSIC_END
 189
 190 /* Arithmetic results.  */
 191 typedef enum
 192 { ARITH_OK = 1, ARITH_OVERFLOW, ARITH_UNDERFLOW, ARITH_NAN,
 193   ARITH_DIV0, ARITH_INCOMMENSURATE, ARITH_ASYMMETRIC, ARITH_PROHIBIT
 194 }
 195 arith;
 196
 197 /* Statements.  */
 198 typedef enum
 199 {
 200   ST_ARITHMETIC_IF, ST_ALLOCATE, ST_ATTR_DECL, ST_ASSOCIATE,
 201   ST_BACKSPACE, ST_BLOCK, ST_BLOCK_DATA,
 202   ST_CALL, ST_CASE, ST_CLOSE, ST_COMMON, ST_CONTINUE, ST_CONTAINS, ST_CYCLE,
 203   ST_DATA, ST_DATA_DECL, ST_DEALLOCATE, ST_DO, ST_ELSE, ST_ELSEIF,
 204   ST_ELSEWHERE, ST_END_ASSOCIATE, ST_END_BLOCK, ST_END_BLOCK_DATA,
 205   ST_ENDDO, ST_IMPLIED_ENDDO,
 206   ST_END_FILE, ST_FINAL, ST_FLUSH, ST_END_FORALL, ST_END_FUNCTION, ST_ENDIF,
 207   ST_END_INTERFACE, ST_END_MODULE, ST_END_PROGRAM, ST_END_SELECT,
 208   ST_END_SUBROUTINE, ST_END_WHERE, ST_END_TYPE, ST_ENTRY, ST_EQUIVALENCE,
 209   ST_ERROR_STOP, ST_EXIT, ST_FORALL, ST_FORALL_BLOCK, ST_FORMAT, ST_FUNCTION,
 210   ST_GOTO, ST_IF_BLOCK, ST_IMPLICIT, ST_IMPLICIT_NONE, ST_IMPORT,
 211   ST_INQUIRE, ST_INTERFACE, ST_SYNC_ALL, ST_SYNC_MEMORY, ST_SYNC_IMAGES,
 212   ST_PARAMETER, ST_MODULE, ST_MODULE_PROC, ST_NAMELIST, ST_NULLIFY, ST_OPEN,
 213   ST_PAUSE, ST_PRIVATE, ST_PROGRAM, ST_PUBLIC, ST_READ, ST_RETURN, ST_REWIND,
 214   ST_STOP, ST_SUBROUTINE, ST_TYPE, ST_USE, ST_WHERE_BLOCK, ST_WHERE, ST_WAIT,
 215   ST_WRITE, ST_ASSIGNMENT, ST_POINTER_ASSIGNMENT, ST_SELECT_CASE, ST_SEQUENCE,
 216   ST_SIMPLE_IF, ST_STATEMENT_FUNCTION, ST_DERIVED_DECL, ST_LABEL_ASSIGNMENT,
 217   ST_ENUM, ST_ENUMERATOR, ST_END_ENUM, ST_SELECT_TYPE, ST_TYPE_IS, ST_CLASS_IS,
 218   ST_OMP_ATOMIC, ST_OMP_BARRIER, ST_OMP_CRITICAL, ST_OMP_END_CRITICAL,
 219   ST_OMP_END_DO, ST_OMP_END_MASTER, ST_OMP_END_ORDERED, ST_OMP_END_PARALLEL,
 220   ST_OMP_END_PARALLEL_DO, ST_OMP_END_PARALLEL_SECTIONS,
 221   ST_OMP_END_PARALLEL_WORKSHARE, ST_OMP_END_SECTIONS, ST_OMP_END_SINGLE,
 222   ST_OMP_END_WORKSHARE, ST_OMP_DO, ST_OMP_FLUSH, ST_OMP_MASTER, ST_OMP_ORDERED,
 223   ST_OMP_PARALLEL, ST_OMP_PARALLEL_DO, ST_OMP_PARALLEL_SECTIONS,
 224   ST_OMP_PARALLEL_WORKSHARE, ST_OMP_SECTIONS, ST_OMP_SECTION, ST_OMP_SINGLE,
 225   ST_OMP_THREADPRIVATE, ST_OMP_WORKSHARE, ST_OMP_TASK, ST_OMP_END_TASK,
 226   ST_OMP_TASKWAIT, ST_PROCEDURE, ST_GENERIC, ST_CRITICAL, ST_END_CRITICAL,
 227   ST_GET_FCN_CHARACTERISTICS, ST_NONE
 228 }
 229 gfc_statement;
 230
 231
 232 /* Types of interfaces that we can have.  Assignment interfaces are
 233    considered to be intrinsic operators.  */
 234 typedef enum
 235 {
 236   INTERFACE_NAMELESS = 1, INTERFACE_GENERIC,
 237   INTERFACE_INTRINSIC_OP, INTERFACE_USER_OP, INTERFACE_ABSTRACT
 238 }
 239 interface_type;
 240
 241 /* Symbol flavors: these are all mutually exclusive.
 242    10 elements = 4 bits.  */
 243 typedef enum sym_flavor
 244 {
 245   FL_UNKNOWN = 0, FL_PROGRAM, FL_BLOCK_DATA, FL_MODULE, FL_VARIABLE,
 246   FL_PARAMETER, FL_LABEL, FL_PROCEDURE, FL_DERIVED, FL_NAMELIST,
 247   FL_VOID
 248 }
 249 sym_flavor;
 250
 251 /* Procedure types.  7 elements = 3 bits.  */
 252 typedef enum procedure_type
 253 { PROC_UNKNOWN, PROC_MODULE, PROC_INTERNAL, PROC_DUMMY,
 254   PROC_INTRINSIC, PROC_ST_FUNCTION, PROC_EXTERNAL
 255 }
 256 procedure_type;
 257
 258 /* Intent types.  */
 259 typedef enum sym_intent
 260 { INTENT_UNKNOWN = 0, INTENT_IN, INTENT_OUT, INTENT_INOUT
 261 }
 262 sym_intent;
 263
 264 /* Access types.  */
 265 typedef enum gfc_access
 266 { ACCESS_UNKNOWN = 0, ACCESS_PUBLIC, ACCESS_PRIVATE
 267 }
 268 gfc_access;
 269
 270 /* Flags to keep track of where an interface came from.
 271    3 elements = 2 bits.  */
 272 typedef enum ifsrc
 273 { IFSRC_UNKNOWN = 0,    /* Interface unknown, only return type may be known.  */
 274   IFSRC_DECL,           /* FUNCTION or SUBROUTINE declaration.  */
 275   IFSRC_IFBODY          /* INTERFACE statement or PROCEDURE statement
 276                            with explicit interface.  */
 277 }
 278 ifsrc;
 279
 280 /* Whether a SAVE attribute was set explicitly or implicitly.  */
 281 typedef enum save_state
 282 { SAVE_NONE = 0, SAVE_EXPLICIT, SAVE_IMPLICIT
 283 }
 284 save_state;
 285
 286 /* Strings for all symbol attributes.  We use these for dumping the
 287    parse tree, in error messages, and also when reading and writing
 288    modules.  In symbol.c.  */
 289 extern const mstring flavors[];
 290 extern const mstring procedures[];
 291 extern const mstring intents[];
 292 extern const mstring access_types[];
 293 extern const mstring ifsrc_types[];
 294 extern const mstring save_status[];
 295
 296 /* Enumeration of all the generic intrinsic functions.  Used by the
 297    backend for identification of a function.  */
 298
 299 enum gfc_isym_id
 300 {
 301   /* GFC_ISYM_NONE is used for intrinsics which will never be seen by
 302      the backend (e.g. KIND).  */
 303   GFC_ISYM_NONE = 0,
 304   GFC_ISYM_ABORT,
 305   GFC_ISYM_ABS,
 306   GFC_ISYM_ACCESS,
 307   GFC_ISYM_ACHAR,
 308   GFC_ISYM_ACOS,
 309   GFC_ISYM_ACOSH,
 310   GFC_ISYM_ADJUSTL,
 311   GFC_ISYM_ADJUSTR,
 312   GFC_ISYM_AIMAG,
 313   GFC_ISYM_AINT,
 314   GFC_ISYM_ALARM,
 315   GFC_ISYM_ALL,
 316   GFC_ISYM_ALLOCATED,
 317   GFC_ISYM_AND,
 318   GFC_ISYM_ANINT,
 319   GFC_ISYM_ANY,
 320   GFC_ISYM_ASIN,
 321   GFC_ISYM_ASINH,
 322   GFC_ISYM_ASSOCIATED,
 323   GFC_ISYM_ATAN,
 324   GFC_ISYM_ATAN2,
 325   GFC_ISYM_ATANH,
 326   GFC_ISYM_BGE,
 327   GFC_ISYM_BGT,
 328   GFC_ISYM_BIT_SIZE,
 329   GFC_ISYM_BLE,
 330   GFC_ISYM_BLT,
 331   GFC_ISYM_BTEST,
 332   GFC_ISYM_CEILING,
 333   GFC_ISYM_CHAR,
 334   GFC_ISYM_CHDIR,
 335   GFC_ISYM_CHMOD,
 336   GFC_ISYM_CMPLX,
 337   GFC_ISYM_COMMAND_ARGUMENT_COUNT,
 338   GFC_ISYM_COMPILER_OPTIONS,
 339   GFC_ISYM_COMPILER_VERSION,
 340   GFC_ISYM_COMPLEX,
 341   GFC_ISYM_CONJG,
 342   GFC_ISYM_CONVERSION,
 343   GFC_ISYM_COS,
 344   GFC_ISYM_COSH,
 345   GFC_ISYM_COUNT,
 346   GFC_ISYM_CPU_TIME,
 347   GFC_ISYM_CSHIFT,
 348   GFC_ISYM_CTIME,
 349   GFC_ISYM_C_SIZEOF,
 350   GFC_ISYM_DATE_AND_TIME,
 351   GFC_ISYM_DBLE,
 352   GFC_ISYM_DIGITS,
 353   GFC_ISYM_DIM,
 354   GFC_ISYM_DOT_PRODUCT,
 355   GFC_ISYM_DPROD,
 356   GFC_ISYM_DSHIFTL,
 357   GFC_ISYM_DSHIFTR,
 358   GFC_ISYM_DTIME,
 359   GFC_ISYM_EOSHIFT,
 360   GFC_ISYM_EPSILON,
 361   GFC_ISYM_ERF,
 362   GFC_ISYM_ERFC,
 363   GFC_ISYM_ERFC_SCALED,
 364   GFC_ISYM_ETIME,
 365   GFC_ISYM_EXECUTE_COMMAND_LINE,
 366   GFC_ISYM_EXIT,
 367   GFC_ISYM_EXP,
 368   GFC_ISYM_EXPONENT,
 369   GFC_ISYM_EXTENDS_TYPE_OF,
 370   GFC_ISYM_FDATE,
 371   GFC_ISYM_FGET,
 372   GFC_ISYM_FGETC,
 373   GFC_ISYM_FLOOR,
 374   GFC_ISYM_FLUSH,
 375   GFC_ISYM_FNUM,
 376   GFC_ISYM_FPUT,
 377   GFC_ISYM_FPUTC,
 378   GFC_ISYM_FRACTION,
 379   GFC_ISYM_FREE,
 380   GFC_ISYM_FSEEK,
 381   GFC_ISYM_FSTAT,
 382   GFC_ISYM_FTELL,
 383   GFC_ISYM_TGAMMA,
 384   GFC_ISYM_GERROR,
 385   GFC_ISYM_GETARG,
 386   GFC_ISYM_GET_COMMAND,
 387   GFC_ISYM_GET_COMMAND_ARGUMENT,
 388   GFC_ISYM_GETCWD,
 389   GFC_ISYM_GETENV,
 390   GFC_ISYM_GET_ENVIRONMENT_VARIABLE,
 391   GFC_ISYM_GETGID,
 392   GFC_ISYM_GETLOG,
 393   GFC_ISYM_GETPID,
 394   GFC_ISYM_GETUID,
 395   GFC_ISYM_GMTIME,
 396   GFC_ISYM_HOSTNM,
 397   GFC_ISYM_HUGE,
 398   GFC_ISYM_HYPOT,
 399   GFC_ISYM_IACHAR,
 400   GFC_ISYM_IALL,
 401   GFC_ISYM_IAND,
 402   GFC_ISYM_IANY,
 403   GFC_ISYM_IARGC,
 404   GFC_ISYM_IBCLR,
 405   GFC_ISYM_IBITS,
 406   GFC_ISYM_IBSET,
 407   GFC_ISYM_ICHAR,
 408   GFC_ISYM_IDATE,
 409   GFC_ISYM_IEOR,
 410   GFC_ISYM_IERRNO,
 411   GFC_ISYM_IMAGE_INDEX,
 412   GFC_ISYM_INDEX,
 413   GFC_ISYM_INT,
 414   GFC_ISYM_INT2,
 415   GFC_ISYM_INT8,
 416   GFC_ISYM_IOR,
 417   GFC_ISYM_IPARITY,
 418   GFC_ISYM_IRAND,
 419   GFC_ISYM_ISATTY,
 420   GFC_ISYM_IS_IOSTAT_END,
 421   GFC_ISYM_IS_IOSTAT_EOR,
 422   GFC_ISYM_ISNAN,
 423   GFC_ISYM_ISHFT,
 424   GFC_ISYM_ISHFTC,
 425   GFC_ISYM_ITIME,
 426   GFC_ISYM_J0,
 427   GFC_ISYM_J1,
 428   GFC_ISYM_JN,
 429   GFC_ISYM_JN2,
 430   GFC_ISYM_KILL,
 431   GFC_ISYM_KIND,
 432   GFC_ISYM_LBOUND,
 433   GFC_ISYM_LCOBOUND,
 434   GFC_ISYM_LEADZ,
 435   GFC_ISYM_LEN,
 436   GFC_ISYM_LEN_TRIM,
 437   GFC_ISYM_LGAMMA,
 438   GFC_ISYM_LGE,
 439   GFC_ISYM_LGT,
 440   GFC_ISYM_LINK,
 441   GFC_ISYM_LLE,
 442   GFC_ISYM_LLT,
 443   GFC_ISYM_LOC,
 444   GFC_ISYM_LOG,
 445   GFC_ISYM_LOG10,
 446   GFC_ISYM_LOGICAL,
 447   GFC_ISYM_LONG,
 448   GFC_ISYM_LSHIFT,
 449   GFC_ISYM_LSTAT,
 450   GFC_ISYM_LTIME,
 451   GFC_ISYM_MALLOC,
 452   GFC_ISYM_MASKL,
 453   GFC_ISYM_MASKR,
 454   GFC_ISYM_MATMUL,
 455   GFC_ISYM_MAX,
 456   GFC_ISYM_MAXEXPONENT,
 457   GFC_ISYM_MAXLOC,
 458   GFC_ISYM_MAXVAL,
 459   GFC_ISYM_MCLOCK,
 460   GFC_ISYM_MCLOCK8,
 461   GFC_ISYM_MERGE,
 462   GFC_ISYM_MERGE_BITS,
 463   GFC_ISYM_MIN,
 464   GFC_ISYM_MINEXPONENT,
 465   GFC_ISYM_MINLOC,
 466   GFC_ISYM_MINVAL,
 467   GFC_ISYM_MOD,
 468   GFC_ISYM_MODULO,
 469   GFC_ISYM_MOVE_ALLOC,
 470   GFC_ISYM_MVBITS,
 471   GFC_ISYM_NEAREST,
 472   GFC_ISYM_NEW_LINE,
 473   GFC_ISYM_NINT,
 474   GFC_ISYM_NORM2,
 475   GFC_ISYM_NOT,
 476   GFC_ISYM_NULL,
 477   GFC_ISYM_NUMIMAGES,
 478   GFC_ISYM_OR,
 479   GFC_ISYM_PACK,
 480   GFC_ISYM_PARITY,
 481   GFC_ISYM_PERROR,
 482   GFC_ISYM_POPCNT,
 483   GFC_ISYM_POPPAR,
 484   GFC_ISYM_PRECISION,
 485   GFC_ISYM_PRESENT,
 486   GFC_ISYM_PRODUCT,
 487   GFC_ISYM_RADIX,
 488   GFC_ISYM_RAND,
 489   GFC_ISYM_RANDOM_NUMBER,
 490   GFC_ISYM_RANDOM_SEED,
 491   GFC_ISYM_RANGE,
 492   GFC_ISYM_REAL,
 493   GFC_ISYM_RENAME,
 494   GFC_ISYM_REPEAT,
 495   GFC_ISYM_RESHAPE,
 496   GFC_ISYM_RRSPACING,
 497   GFC_ISYM_RSHIFT,
 498   GFC_ISYM_SAME_TYPE_AS,
 499   GFC_ISYM_SC_KIND,
 500   GFC_ISYM_SCALE,
 501   GFC_ISYM_SCAN,
 502   GFC_ISYM_SECNDS,
 503   GFC_ISYM_SECOND,
 504   GFC_ISYM_SET_EXPONENT,
 505   GFC_ISYM_SHAPE,
 506   GFC_ISYM_SHIFTA,
 507   GFC_ISYM_SHIFTL,
 508   GFC_ISYM_SHIFTR,
 509   GFC_ISYM_SIGN,
 510   GFC_ISYM_SIGNAL,
 511   GFC_ISYM_SI_KIND,
 512   GFC_ISYM_SIN,
 513   GFC_ISYM_SINH,
 514   GFC_ISYM_SIZE,
 515   GFC_ISYM_SLEEP,
 516   GFC_ISYM_SIZEOF,
 517   GFC_ISYM_SPACING,
 518   GFC_ISYM_SPREAD,
 519   GFC_ISYM_SQRT,
 520   GFC_ISYM_SRAND,
 521   GFC_ISYM_SR_KIND,
 522   GFC_ISYM_STAT,
 523   GFC_ISYM_STORAGE_SIZE,
 524   GFC_ISYM_SUM,
 525   GFC_ISYM_SYMLINK,
 526   GFC_ISYM_SYMLNK,
 527   GFC_ISYM_SYSTEM,
 528   GFC_ISYM_SYSTEM_CLOCK,
 529   GFC_ISYM_TAN,
 530   GFC_ISYM_TANH,
 531   GFC_ISYM_THIS_IMAGE,
 532   GFC_ISYM_TIME,
 533   GFC_ISYM_TIME8,
 534   GFC_ISYM_TINY,
 535   GFC_ISYM_TRAILZ,
 536   GFC_ISYM_TRANSFER,
 537   GFC_ISYM_TRANSPOSE,
 538   GFC_ISYM_TRIM,
 539   GFC_ISYM_TTYNAM,
 540   GFC_ISYM_UBOUND,
 541   GFC_ISYM_UCOBOUND,
 542   GFC_ISYM_UMASK,
 543   GFC_ISYM_UNLINK,
 544   GFC_ISYM_UNPACK,
 545   GFC_ISYM_VERIFY,
 546   GFC_ISYM_XOR,
 547   GFC_ISYM_Y0,
 548   GFC_ISYM_Y1,
 549   GFC_ISYM_YN,
 550   GFC_ISYM_YN2
 551 };
 552 typedef enum gfc_isym_id gfc_isym_id;
 553
 554
 555 typedef enum
 556 {
 557   GFC_INIT_REAL_OFF = 0,
 558   GFC_INIT_REAL_ZERO,
 559   GFC_INIT_REAL_NAN,
 560   GFC_INIT_REAL_SNAN,
 561   GFC_INIT_REAL_INF,
 562   GFC_INIT_REAL_NEG_INF
 563 }
 564 init_local_real;
 565
 566 typedef enum
 567 {
 568   GFC_INIT_LOGICAL_OFF = 0,
 569   GFC_INIT_LOGICAL_FALSE,
 570   GFC_INIT_LOGICAL_TRUE
 571 }
 572 init_local_logical;
 573
 574 typedef enum
 575 {
 576   GFC_INIT_CHARACTER_OFF = 0,
 577   GFC_INIT_CHARACTER_ON
 578 }
 579 init_local_character;
 580
 581 typedef enum
 582 {
 583   GFC_INIT_INTEGER_OFF = 0,
 584   GFC_INIT_INTEGER_ON
 585 }
 586 init_local_integer;
 587
 588 typedef enum
 589 {
 590   GFC_FCOARRAY_NONE = 0,
 591   GFC_FCOARRAY_SINGLE
 592 }
 593 gfc_fcoarray;
 594
 595 typedef enum
 596 {
 597   GFC_REVERSE_NOT_SET,
 598   GFC_REVERSE_SET,
 599   GFC_CAN_REVERSE,
 600   GFC_CANNOT_REVERSE
 601 }
 602 gfc_reverse;
 603
 604 /************************* Structures *****************************/
 605
 606 /* Used for keeping things in balanced binary trees.  */
 607 #define BBT_HEADER(self) int priority; struct self *left, *right
 608
 609 #define NAMED_INTCST(a,b,c,d) a,
 610 #define NAMED_KINDARRAY(a,b,c,d) a,
 611 #define NAMED_FUNCTION(a,b,c,d) a,
 612 typedef enum
 613 {
 614   ISOFORTRANENV_INVALID = -1,
 615 #include "iso-fortran-env.def"
 616   ISOFORTRANENV_LAST, ISOFORTRANENV_NUMBER = ISOFORTRANENV_LAST
 617 }
 618 iso_fortran_env_symbol;
 619 #undef NAMED_INTCST
 620 #undef NAMED_KINDARRAY
 621 #undef NAMED_FUNCTION
 622
 623 #define NAMED_INTCST(a,b,c,d) a,
 624 #define NAMED_REALCST(a,b,c) a,
 625 #define NAMED_CMPXCST(a,b,c) a,
 626 #define NAMED_LOGCST(a,b,c) a,
 627 #define NAMED_CHARKNDCST(a,b,c) a,
 628 #define NAMED_CHARCST(a,b,c) a,
 629 #define DERIVED_TYPE(a,b,c) a,
 630 #define PROCEDURE(a,b) a,
 631 #define NAMED_FUNCTION(a,b,c,d) a,
 632 typedef enum
 633 {
 634   ISOCBINDING_INVALID = -1,
 635 #include "iso-c-binding.def"
 636   ISOCBINDING_LAST,
 637   ISOCBINDING_NUMBER = ISOCBINDING_LAST
 638 }
 639 iso_c_binding_symbol;
 640 #undef NAMED_INTCST
 641 #undef NAMED_REALCST
 642 #undef NAMED_CMPXCST
 643 #undef NAMED_LOGCST
 644 #undef NAMED_CHARKNDCST
 645 #undef NAMED_CHARCST
 646 #undef DERIVED_TYPE
 647 #undef PROCEDURE
 648 #undef NAMED_FUNCTION
 649
 650 typedef enum
 651 {
 652   INTMOD_NONE = 0, INTMOD_ISO_FORTRAN_ENV, INTMOD_ISO_C_BINDING
 653 }
 654 intmod_id;
 655
 656 typedef struct
 657 {
 658   char name[GFC_MAX_SYMBOL_LEN + 1];
 659   int value;  /* Used for both integer and character values.  */
 660   bt f90_type;
 661 }
 662 CInteropKind_t;
 663
 664 /* Array of structs, where the structs represent the C interop kinds.
 665    The list will be implemented based on a hash of the kind name since
 666    these could be accessed multiple times.
 667    Declared in trans-types.c as a global, since it's in that file
 668    that the list is initialized.  */
 669 extern CInteropKind_t c_interop_kinds_table[];
 670
 671
 672 /* Structure and list of supported extension attributes.  */
 673 typedef enum
 674 {
 675   EXT_ATTR_DLLIMPORT = 0,
 676   EXT_ATTR_DLLEXPORT,
 677   EXT_ATTR_STDCALL,
 678   EXT_ATTR_CDECL,
 679   EXT_ATTR_FASTCALL,
 680   EXT_ATTR_LAST, EXT_ATTR_NUM = EXT_ATTR_LAST
 681 }
 682 ext_attr_id_t;
 683
 684 typedef struct
 685 {
 686   const char *name;
 687   unsigned id;
 688   const char *middle_end_name;
 689 }
 690 ext_attr_t;
 691
 692 extern const ext_attr_t ext_attr_list[];
 693
 694 /* Symbol attribute structure.  */
 695 typedef struct
 696 {
 697   /* Variable attributes.  */
 698   unsigned allocatable:1, dimension:1, codimension:1, external:1, intrinsic:1,
 699     optional:1, pointer:1, target:1, value:1, volatile_:1, temporary:1,
 700     dummy:1, result:1, assign:1, threadprivate:1, not_always_present:1,
 701     implied_index:1, subref_array_pointer:1, proc_pointer:1, asynchronous:1,
 702     contiguous:1;
 703
 704   /* For CLASS containers, the pointer attribute is sometimes set internally
 705      even though it was not directly specified.  In this case, keep the
 706      "real" (original) value here.  */
 707   unsigned class_pointer:1;
 708
 709   ENUM_BITFIELD (save_state) save:2;
 710
 711   unsigned data:1,              /* Symbol is named in a DATA statement.  */
 712     is_protected:1,             /* Symbol has been marked as protected.  */
 713     use_assoc:1,                /* Symbol has been use-associated.  */
 714     use_only:1,                 /* Symbol has been use-associated, with ONLY.  */
 715     use_rename:1,               /* Symbol has been use-associated and renamed.  */
 716     imported:1,                 /* Symbol has been associated by IMPORT.  */
 717     host_assoc:1;               /* Symbol has been host associated.  */
 718
 719   unsigned in_namelist:1, in_common:1, in_equivalence:1;
 720   unsigned function:1, subroutine:1, procedure:1;
 721   unsigned generic:1, generic_copy:1;
 722   unsigned implicit_type:1;     /* Type defined via implicit rules.  */
 723   unsigned untyped:1;           /* No implicit type could be found.  */
 724
 725   unsigned is_bind_c:1;         /* say if is bound to C.  */
 726   unsigned extension:8;         /* extension level of a derived type.  */
 727   unsigned is_class:1;          /* is a CLASS container.  */
 728   unsigned class_ok:1;          /* is a CLASS object with correct attributes.  */
 729   unsigned vtab:1;              /* is a derived type vtab, pointed to by CLASS objects.  */
 730   unsigned vtype:1;             /* is a derived type of a vtab.  */
 731
 732   /* These flags are both in the typespec and attribute.  The attribute
 733      list is what gets read from/written to a module file.  The typespec
 734      is created from a decl being processed.  */
 735   unsigned is_c_interop:1;      /* It's c interoperable.  */
 736   unsigned is_iso_c:1;          /* Symbol is from iso_c_binding.  */
 737
 738   /* Function/subroutine attributes */
 739   unsigned sequence:1, elemental:1, pure:1, recursive:1;
 740   unsigned unmaskable:1, masked:1, contained:1, mod_proc:1, abstract:1;
 741
 742   /* This is set if the subroutine doesn't return.  Currently, this
 743      is only possible for intrinsic subroutines.  */
 744   unsigned noreturn:1;
 745
 746   /* Set if this procedure is an alternate entry point.  These procedures
 747      don't have any code associated, and the backend will turn them into
 748      thunks to the master function.  */
 749   unsigned entry:1;
 750
 751   /* Set if this is the master function for a procedure with multiple
 752      entry points.  */
 753   unsigned entry_master:1;
 754
 755   /* Set if this is the master function for a function with multiple
 756      entry points where characteristics of the entry points differ.  */
 757   unsigned mixed_entry_master:1;
 758
 759   /* Set if a function must always be referenced by an explicit interface.  */
 760   unsigned always_explicit:1;
 761
 762   /* Set if the symbol has been referenced in an expression.  No further
 763      modification of type or type parameters is permitted.  */
 764   unsigned referenced:1;
 765
 766   /* Set if this is the symbol for the main program.  */
 767   unsigned is_main_program:1;
 768
 769   /* Mutually exclusive multibit attributes.  */
 770   ENUM_BITFIELD (gfc_access) access:2;
 771   ENUM_BITFIELD (sym_intent) intent:2;
 772   ENUM_BITFIELD (sym_flavor) flavor:4;
 773   ENUM_BITFIELD (ifsrc) if_source:2;
 774
 775   ENUM_BITFIELD (procedure_type) proc:3;
 776
 777   /* Special attributes for Cray pointers, pointees.  */
 778   unsigned cray_pointer:1, cray_pointee:1;
 779
 780   /* The symbol is a derived type with allocatable components, pointer
 781      components or private components, procedure pointer components,
 782      possibly nested.  zero_comp is true if the derived type has no
 783      component at all.  */
 784   unsigned alloc_comp:1, pointer_comp:1, proc_pointer_comp:1,
 785            private_comp:1, zero_comp:1, coarray_comp:1;
 786
 787   /* This is a temporary selector for SELECT TYPE.  */
 788   unsigned select_type_temporary:1;
 789
 790   /* Attributes set by compiler extensions (!GCC$ ATTRIBUTES).  */
 791   unsigned ext_attr:EXT_ATTR_NUM;
 792
 793   /* The namespace where the attribute has been set.  */
 794   struct gfc_namespace *volatile_ns, *asynchronous_ns;
 795 }
 796 symbol_attribute;
 797
 798
 799 /* We need to store source lines as sequences of multibyte source
 800    characters. We define here a type wide enough to hold any multibyte
 801    source character, just like libcpp does.  A 32-bit type is enough.  */
 802
 803 #if HOST_BITS_PER_INT >= 32
 804 typedef unsigned int gfc_char_t;
 805 #elif HOST_BITS_PER_LONG >= 32
 806 typedef unsigned long gfc_char_t;
 807 #elif defined(HAVE_LONG_LONG) && (HOST_BITS_PER_LONGLONG >= 32)
 808 typedef unsigned long long gfc_char_t;
 809 #else
 810 # error "Cannot find an integer type with at least 32 bits"
 811 #endif
 812
 813
 814 /* The following three structures are used to identify a location in
 815    the sources.
 816
 817    gfc_file is used to maintain a tree of the source files and how
 818    they include each other
 819
 820    gfc_linebuf holds a single line of source code and information
 821    which file it resides in
 822
 823    locus point to the sourceline and the character in the source
 824    line.
 825 */
 826
 827 typedef struct gfc_file
 828 {
 829   struct gfc_file *next, *up;
 830   int inclusion_line, line;
 831   char *filename;
 832 } gfc_file;
 833
 834 typedef struct gfc_linebuf
 835 {
 836   source_location location;
 837   struct gfc_file *file;
 838   struct gfc_linebuf *next;
 839
 840   int truncated;
 841   bool dbg_emitted;
 842
 843   gfc_char_t line[1];
 844 } gfc_linebuf;
 845
 846 #define gfc_linebuf_header_size (offsetof (gfc_linebuf, line))
 847
 848 #define gfc_linebuf_linenum(LBUF) (LOCATION_LINE ((LBUF)->location))
 849
 850 typedef struct
 851 {
 852   gfc_char_t *nextc;
 853   gfc_linebuf *lb;
 854 } locus;
 855
 856 /* In order for the "gfc" format checking to work correctly, you must
 857    have declared a typedef locus first.  */
 858 #if GCC_VERSION >= 4001
 859 #define ATTRIBUTE_GCC_GFC(m, n) __attribute__ ((__format__ (__gcc_gfc__, m, n))) ATTRIBUTE_NONNULL(m)
 860 #else
 861 #define ATTRIBUTE_GCC_GFC(m, n) ATTRIBUTE_NONNULL(m)
 862 #endif
 863
 864
 865 /* Suppress error messages or re-enable them.  */
 866
 867 void gfc_push_suppress_errors (void);
 868 void gfc_pop_suppress_errors (void);
 869
 870
 871 /* Character length structures hold the expression that gives the
 872    length of a character variable.  We avoid putting these into
 873    gfc_typespec because doing so prevents us from doing structure
 874    copies and forces us to deallocate any typespecs we create, as well
 875    as structures that contain typespecs.  They also can have multiple
 876    character typespecs pointing to them.
 877
 878    These structures form a singly linked list within the current
 879    namespace and are deallocated with the namespace.  It is possible to
 880    end up with gfc_charlen structures that have nothing pointing to them.  */
 881
 882 typedef struct gfc_charlen
 883 {
 884   struct gfc_expr *length;
 885   struct gfc_charlen *next;
 886   bool length_from_typespec; /* Length from explicit array ctor typespec?  */
 887   tree backend_decl;
 888   tree passed_length; /* Length argument explicitly passed.  */
 889
 890   int resolved;
 891 }
 892 gfc_charlen;
 893
 894 #define gfc_get_charlen() XCNEW (gfc_charlen)
 895
 896 /* Type specification structure.  */
 897 typedef struct
 898 {
 899   bt type;
 900   int kind;
 901
 902   union
 903   {
 904     struct gfc_symbol *derived; /* For derived types only.  */
 905     gfc_charlen *cl;            /* For character types only.  */
 906     int pad;                    /* For hollerith types only.  */
 907   }
 908   u;
 909
 910   struct gfc_symbol *interface; /* For PROCEDURE declarations.  */
 911   int is_c_interop;
 912   int is_iso_c;
 913   bt f90_type;
 914   bool deferred;
 915 }
 916 gfc_typespec;
 917
 918 /* Array specification.  */
 919 typedef struct
 920 {
 921   int rank;     /* A rank of zero means that a variable is a scalar.  */
 922   int corank;
 923   array_type type, cotype;
 924   struct gfc_expr *lower[GFC_MAX_DIMENSIONS], *upper[GFC_MAX_DIMENSIONS];
 925
 926   /* These two fields are used with the Cray Pointer extension.  */
 927   bool cray_pointee; /* True iff this spec belongs to a cray pointee.  */
 928   bool cp_was_assumed; /* AS_ASSUMED_SIZE cp arrays are converted to
 929                         AS_EXPLICIT, but we want to remember that we
 930                         did this.  */
 931
 932 }
 933 gfc_array_spec;
 934
 935 #define gfc_get_array_spec() XCNEW (gfc_array_spec)
 936
 937
 938 /* Components of derived types.  */
 939 typedef struct gfc_component
 940 {
 941   const char *name;
 942   gfc_typespec ts;
 943
 944   symbol_attribute attr;
 945   gfc_array_spec *as;
 946
 947   tree backend_decl;
 948   locus loc;
 949   struct gfc_expr *initializer;
 950   struct gfc_component *next;
 951
 952   /* Needed for procedure pointer components.  */
 953   struct gfc_formal_arglist *formal;
 954   struct gfc_namespace *formal_ns;
 955   struct gfc_typebound_proc *tb;
 956 }
 957 gfc_component;
 958
 959 #define gfc_get_component() XCNEW (gfc_component)
 960
 961 /* Formal argument lists are lists of symbols.  */
 962 typedef struct gfc_formal_arglist
 963 {
 964   /* Symbol representing the argument at this position in the arglist.  */
 965   struct gfc_symbol *sym;
 966   /* Points to the next formal argument.  */
 967   struct gfc_formal_arglist *next;
 968 }
 969 gfc_formal_arglist;
 970
 971 #define gfc_get_formal_arglist() XCNEW (gfc_formal_arglist)
 972
 973
 974 /* The gfc_actual_arglist structure is for actual arguments.  */
 975 typedef struct gfc_actual_arglist
 976 {
 977   const char *name;
 978   /* Alternate return label when the expr member is null.  */
 979   struct gfc_st_label *label;
 980
 981   /* This is set to the type of an eventual omitted optional
 982      argument. This is used to determine if a hidden string length
 983      argument has to be added to a function call.  */
 984   bt missing_arg_type;
 985
 986   struct gfc_expr *expr;
 987   struct gfc_actual_arglist *next;
 988 }
 989 gfc_actual_arglist;
 990
 991 #define gfc_get_actual_arglist() XCNEW (gfc_actual_arglist)
 992
 993
 994 /* Because a symbol can belong to multiple namelists, they must be
 995    linked externally to the symbol itself.  */
 996 typedef struct gfc_namelist
 997 {
 998   struct gfc_symbol *sym;
 999   struct gfc_namelist *next;
1000 }
1001 gfc_namelist;
1002
1003 #define gfc_get_namelist() XCNEW (gfc_namelist)
1004
1005 enum
1006 {
1007   OMP_LIST_PRIVATE,
1008   OMP_LIST_FIRSTPRIVATE,
1009   OMP_LIST_LASTPRIVATE,
1010   OMP_LIST_COPYPRIVATE,
1011   OMP_LIST_SHARED,
1012   OMP_LIST_COPYIN,
1013   OMP_LIST_PLUS,
1014   OMP_LIST_REDUCTION_FIRST = OMP_LIST_PLUS,
1015   OMP_LIST_MULT,
1016   OMP_LIST_SUB,
1017   OMP_LIST_AND,
1018   OMP_LIST_OR,
1019   OMP_LIST_EQV,
1020   OMP_LIST_NEQV,
1021   OMP_LIST_MAX,
1022   OMP_LIST_MIN,
1023   OMP_LIST_IAND,
1024   OMP_LIST_IOR,
1025   OMP_LIST_IEOR,
1026   OMP_LIST_REDUCTION_LAST = OMP_LIST_IEOR,
1027   OMP_LIST_NUM
1028 };
1029
1030 /* Because a symbol can belong to multiple namelists, they must be
1031    linked externally to the symbol itself.  */
1032
1033 enum gfc_omp_sched_kind
1034 {
1035   OMP_SCHED_NONE,
1036   OMP_SCHED_STATIC,
1037   OMP_SCHED_DYNAMIC,
1038   OMP_SCHED_GUIDED,
1039   OMP_SCHED_RUNTIME,
1040   OMP_SCHED_AUTO
1041 };
1042
1043 enum gfc_omp_default_sharing
1044 {
1045   OMP_DEFAULT_UNKNOWN,
1046   OMP_DEFAULT_NONE,
1047   OMP_DEFAULT_PRIVATE,
1048   OMP_DEFAULT_SHARED,
1049   OMP_DEFAULT_FIRSTPRIVATE
1050 };
1051
1052 typedef struct gfc_omp_clauses
1053 {
1054   struct gfc_expr *if_expr;
1055   struct gfc_expr *num_threads;
1056   gfc_namelist *lists[OMP_LIST_NUM];
1057   enum gfc_omp_sched_kind sched_kind;
1058   struct gfc_expr *chunk_size;
1059   enum gfc_omp_default_sharing default_sharing;
1060   int collapse;
1061   bool nowait, ordered, untied;
1062 }
1063 gfc_omp_clauses;
1064
1065 #define gfc_get_omp_clauses() XCNEW (gfc_omp_clauses)
1066
1067
1068 /* The gfc_st_label structure is a BBT attached to a namespace that
1069    records the usage of statement labels within that space.  */
1070
1071 typedef struct gfc_st_label
1072 {
1073   BBT_HEADER(gfc_st_label);
1074
1075   int value;
1076
1077   gfc_sl_type defined, referenced;
1078
1079   struct gfc_expr *format;
1080
1081   tree backend_decl;
1082
1083   locus where;
1084 }
1085 gfc_st_label;
1086
1087
1088 /* gfc_interface()-- Interfaces are lists of symbols strung together.  */
1089 typedef struct gfc_interface
1090 {
1091   struct gfc_symbol *sym;
1092   locus where;
1093   struct gfc_interface *next;
1094 }
1095 gfc_interface;
1096
1097 #define gfc_get_interface() XCNEW (gfc_interface)
1098
1099 /* User operator nodes.  These are like stripped down symbols.  */
1100 typedef struct
1101 {
1102   const char *name;
1103
1104   gfc_interface *op;
1105   struct gfc_namespace *ns;
1106   gfc_access access;
1107 }
1108 gfc_user_op;
1109
1110
1111 /* A list of specific bindings that are associated with a generic spec.  */
1112 typedef struct gfc_tbp_generic
1113 {
1114   /* The parser sets specific_st, upon resolution we look for the corresponding
1115      gfc_typebound_proc and set specific for further use.  */
1116   struct gfc_symtree* specific_st;
1117   struct gfc_typebound_proc* specific;
1118
1119   struct gfc_tbp_generic* next;
1120 }
1121 gfc_tbp_generic;
1122
1123 #define gfc_get_tbp_generic() XCNEW (gfc_tbp_generic)
1124
1125
1126 /* Data needed for type-bound procedures.  */
1127 typedef struct gfc_typebound_proc
1128 {
1129   locus where; /* Where the PROCEDURE/GENERIC definition was.  */
1130
1131   union
1132   {
1133     struct gfc_symtree* specific; /* The interface if DEFERRED.  */
1134     gfc_tbp_generic* generic;
1135   }
1136   u;
1137
1138   gfc_access access;
1139   const char* pass_arg; /* Argument-name for PASS.  NULL if not specified.  */
1140
1141   /* The overridden type-bound proc (or GENERIC with this name in the
1142      parent-type) or NULL if non.  */
1143   struct gfc_typebound_proc* overridden;
1144
1145   /* Once resolved, we use the position of pass_arg in the formal arglist of
1146      the binding-target procedure to identify it.  The first argument has
1147      number 1 here, the second 2, and so on.  */
1148   unsigned pass_arg_num;
1149
1150   unsigned nopass:1; /* Whether we have NOPASS (PASS otherwise).  */
1151   unsigned non_overridable:1;
1152   unsigned deferred:1;
1153   unsigned is_generic:1;
1154   unsigned function:1, subroutine:1;
1155   unsigned error:1; /* Ignore it, when an error occurred during resolution.  */
1156   unsigned ppc:1;
1157 }
1158 gfc_typebound_proc;
1159
1160
1161 /* Symbol nodes.  These are important things.  They are what the
1162    standard refers to as "entities".  The possibly multiple names that
1163    refer to the same entity are accomplished by a binary tree of
1164    symtree structures that is balanced by the red-black method-- more
1165    than one symtree node can point to any given symbol.  */
1166
1167 typedef struct gfc_symbol
1168 {
1169   const char *name;     /* Primary name, before renaming */
1170   const char *module;   /* Module this symbol came from */
1171   locus declared_at;
1172
1173   gfc_typespec ts;
1174   symbol_attribute attr;
1175
1176   /* The formal member points to the formal argument list if the
1177      symbol is a function or subroutine name.  If the symbol is a
1178      generic name, the generic member points to the list of
1179      interfaces.  */
1180
1181   gfc_interface *generic;
1182   gfc_access component_access;
1183
1184   gfc_formal_arglist *formal;
1185   struct gfc_namespace *formal_ns;
1186   struct gfc_namespace *f2k_derived;
1187
1188   struct gfc_expr *value;       /* Parameter/Initializer value */
1189   gfc_array_spec *as;
1190   struct gfc_symbol *result;    /* function result symbol */
1191   gfc_component *components;    /* Derived type components */
1192
1193   /* Defined only for Cray pointees; points to their pointer.  */
1194   struct gfc_symbol *cp_pointer;
1195
1196   int entry_id;                 /* Used in resolve.c for entries.  */
1197
1198   /* CLASS hashed name for declared and dynamic types in the class.  */
1199   int hash_value;
1200
1201   struct gfc_symbol *common_next;       /* Links for COMMON syms */
1202
1203   /* This is in fact a gfc_common_head but it is only used for pointer
1204      comparisons to check if symbols are in the same common block.  */
1205   struct gfc_common_head* common_head;
1206
1207   /* Make sure setup code for dummy arguments is generated in the correct
1208      order.  */
1209   int dummy_order;
1210
1211   gfc_namelist *namelist, *namelist_tail;
1212
1213   /* Change management fields.  Symbols that might be modified by the
1214      current statement have the mark member nonzero and are kept in a
1215      singly linked list through the tlink field.  Of these symbols,
1216      symbols with old_symbol equal to NULL are symbols created within
1217      the current statement.  Otherwise, old_symbol points to a copy of
1218      the old symbol.  */
1219
1220   struct gfc_symbol *old_symbol, *tlink;
1221   unsigned mark:1, gfc_new:1;
1222   /* Nonzero if all equivalences associated with this symbol have been
1223      processed.  */
1224   unsigned equiv_built:1;
1225   /* Set if this variable is used as an index name in a FORALL.  */
1226   unsigned forall_index:1;
1227   int refs;
1228   struct gfc_namespace *ns;     /* namespace containing this symbol */
1229
1230   tree backend_decl;
1231
1232   /* Identity of the intrinsic module the symbol comes from, or
1233      INTMOD_NONE if it's not imported from a intrinsic module.  */
1234   intmod_id from_intmod;
1235   /* Identity of the symbol from intrinsic modules, from enums maintained
1236      separately by each intrinsic module.  Used together with from_intmod,
1237      it uniquely identifies a symbol from an intrinsic module.  */
1238   int intmod_sym_id;
1239
1240   /* This may be repetitive, since the typespec now has a binding
1241      label field.  */
1242   char binding_label[GFC_MAX_BINDING_LABEL_LEN + 1];
1243   /* Store a reference to the common_block, if this symbol is in one.  */
1244   struct gfc_common_head *common_block;
1245
1246   /* Link to corresponding association-list if this is an associate name.  */
1247   struct gfc_association_list *assoc;
1248 }
1249 gfc_symbol;
1250
1251
1252 /* This structure is used to keep track of symbols in common blocks.  */
1253 typedef struct gfc_common_head
1254 {
1255   locus where;
1256   char use_assoc, saved, threadprivate;
1257   char name[GFC_MAX_SYMBOL_LEN + 1];
1258   struct gfc_symbol *head;
1259   char binding_label[GFC_MAX_BINDING_LABEL_LEN + 1];
1260   int is_bind_c;
1261 }
1262 gfc_common_head;
1263
1264 #define gfc_get_common_head() XCNEW (gfc_common_head)
1265
1266
1267 /* A list of all the alternate entry points for a procedure.  */
1268
1269 typedef struct gfc_entry_list
1270 {
1271   /* The symbol for this entry point.  */
1272   gfc_symbol *sym;
1273   /* The zero-based id of this entry point.  */
1274   int id;
1275   /* The LABEL_EXPR marking this entry point.  */
1276   tree label;
1277   /* The next item in the list.  */
1278   struct gfc_entry_list *next;
1279 }
1280 gfc_entry_list;
1281
1282 #define gfc_get_entry_list() \
1283   (gfc_entry_list *) gfc_getmem(sizeof(gfc_entry_list))
1284
1285 /* Lists of rename info for the USE statement.  */
1286
1287 typedef struct gfc_use_rename
1288 {
1289   char local_name[GFC_MAX_SYMBOL_LEN + 1], use_name[GFC_MAX_SYMBOL_LEN + 1];
1290   struct gfc_use_rename *next;
1291   int found;
1292   gfc_intrinsic_op op;
1293   locus where;
1294 }
1295 gfc_use_rename;
1296
1297 #define gfc_get_use_rename() XCNEW (gfc_use_rename);
1298
1299 /* A list of all USE statements in a namespace.  */
1300
1301 typedef struct gfc_use_list
1302 {
1303   const char *module_name;
1304   int only_flag;
1305   struct gfc_use_rename *rename;
1306   locus where;
1307   /* Next USE statement.  */
1308   struct gfc_use_list *next;
1309 }
1310 gfc_use_list;
1311
1312 #define gfc_get_use_list() \
1313   (gfc_use_list *) gfc_getmem(sizeof(gfc_use_list))
1314
1315 /* Within a namespace, symbols are pointed to by symtree nodes that
1316    are linked together in a balanced binary tree.  There can be
1317    several symtrees pointing to the same symbol node via USE
1318    statements.  */
1319
1320 typedef struct gfc_symtree
1321 {
1322   BBT_HEADER (gfc_symtree);
1323   const char *name;
1324   int ambiguous;
1325   union
1326   {
1327     gfc_symbol *sym;            /* Symbol associated with this node */
1328     gfc_user_op *uop;
1329     gfc_common_head *common;
1330     gfc_typebound_proc *tb;
1331   }
1332   n;
1333 }
1334 gfc_symtree;
1335
1336 /* A linked list of derived types in the namespace.  */
1337 typedef struct gfc_dt_list
1338 {
1339   struct gfc_symbol *derived;
1340   struct gfc_dt_list *next;
1341 }
1342 gfc_dt_list;
1343
1344 #define gfc_get_dt_list() XCNEW (gfc_dt_list)
1345
1346   /* A list of all derived types.  */
1347   extern gfc_dt_list *gfc_derived_types;
1348
1349 /* A namespace describes the contents of procedure, module, interface block
1350    or BLOCK construct.  */
1351 /* ??? Anything else use these?  */
1352
1353 typedef struct gfc_namespace
1354 {
1355   /* Tree containing all the symbols in this namespace.  */
1356   gfc_symtree *sym_root;
1357   /* Tree containing all the user-defined operators in the namespace.  */
1358   gfc_symtree *uop_root;
1359   /* Tree containing all the common blocks.  */
1360   gfc_symtree *common_root;
1361
1362   /* Tree containing type-bound procedures.  */
1363   gfc_symtree *tb_sym_root;
1364   /* Type-bound user operators.  */
1365   gfc_symtree *tb_uop_root;
1366   /* For derived-types, store type-bound intrinsic operators here.  */
1367   gfc_typebound_proc *tb_op[GFC_INTRINSIC_OPS];
1368   /* Linked list of finalizer procedures.  */
1369   struct gfc_finalizer *finalizers;
1370
1371   /* If set_flag[letter] is set, an implicit type has been set for letter.  */
1372   int set_flag[GFC_LETTERS];
1373   /* Keeps track of the implicit types associated with the letters.  */
1374   gfc_typespec default_type[GFC_LETTERS];
1375   /* Store the positions of IMPLICIT statements.  */
1376   locus implicit_loc[GFC_LETTERS];
1377
1378   /* If this is a namespace of a procedure, this points to the procedure.  */
1379   struct gfc_symbol *proc_name;
1380   /* If this is the namespace of a unit which contains executable
1381      code, this points to it.  */
1382   struct gfc_code *code;
1383
1384   /* Points to the equivalences set up in this namespace.  */
1385   struct gfc_equiv *equiv, *old_equiv;
1386
1387   /* Points to the equivalence groups produced by trans_common.  */
1388   struct gfc_equiv_list *equiv_lists;
1389
1390   gfc_interface *op[GFC_INTRINSIC_OPS];
1391
1392   /* Points to the parent namespace, i.e. the namespace of a module or
1393      procedure in which the procedure belonging to this namespace is
1394      contained. The parent namespace points to this namespace either
1395      directly via CONTAINED, or indirectly via the chain built by
1396      SIBLING.  */
1397   struct gfc_namespace *parent;
1398   /* CONTAINED points to the first contained namespace. Sibling
1399      namespaces are chained via SIBLING.  */
1400   struct gfc_namespace  *contained, *sibling;
1401
1402   gfc_common_head blank_common;
1403   gfc_access default_access, operator_access[GFC_INTRINSIC_OPS];
1404
1405   gfc_st_label *st_labels;
1406   /* This list holds information about all the data initializers in
1407      this namespace.  */
1408   struct gfc_data *data;
1409
1410   gfc_charlen *cl_list, *old_cl_list;
1411
1412   gfc_dt_list *derived_types;
1413
1414   int save_all, seen_save, seen_implicit_none;
1415
1416   /* Normally we don't need to refcount namespaces.  However when we read
1417      a module containing a function with multiple entry points, this
1418      will appear as several functions with the same formal namespace.  */
1419   int refs;
1420
1421   /* A list of all alternate entry points to this procedure (or NULL).  */
1422   gfc_entry_list *entries;
1423
1424   /* A list of USE statements in this namespace.  */
1425   gfc_use_list *use_stmts;
1426
1427   /* Set to 1 if namespace is a BLOCK DATA program unit.  */
1428   unsigned is_block_data:1;
1429
1430   /* Set to 1 if namespace is an interface body with "IMPORT" used.  */
1431   unsigned has_import_set:1;
1432
1433   /* Set to 1 if resolved has been called for this namespace.
1434      Holds -1 during resolution.  */
1435   signed resolved:2;
1436
1437   /* Set to 1 if code has been generated for this namespace.  */
1438   unsigned translated:1;
1439
1440   /* Set to 1 if symbols in this namespace should be 'construct entities',
1441      i.e. for BLOCK local variables.  */
1442   unsigned construct_entities:1;
1443 }
1444 gfc_namespace;
1445
1446 extern gfc_namespace *gfc_current_ns;
1447 extern gfc_namespace *gfc_global_ns_list;
1448
1449 /* Global symbols are symbols of global scope. Currently we only use
1450    this to detect collisions already when parsing.
1451    TODO: Extend to verify procedure calls.  */
1452
1453 enum gfc_symbol_type
1454 {
1455   GSYM_UNKNOWN=1, GSYM_PROGRAM, GSYM_FUNCTION, GSYM_SUBROUTINE,
1456   GSYM_MODULE, GSYM_COMMON, GSYM_BLOCK_DATA
1457 };
1458
1459 typedef struct gfc_gsymbol
1460 {
1461   BBT_HEADER(gfc_gsymbol);
1462
1463   const char *name;
1464   const char *sym_name;
1465   const char *mod_name;
1466   const char *binding_label;
1467   enum gfc_symbol_type type;
1468
1469   int defined, used;
1470   locus where;
1471   gfc_namespace *ns;
1472 }
1473 gfc_gsymbol;
1474
1475 extern gfc_gsymbol *gfc_gsym_root;
1476
1477 /* Information on interfaces being built.  */
1478 typedef struct
1479 {
1480   interface_type type;
1481   gfc_symbol *sym;
1482   gfc_namespace *ns;
1483   gfc_user_op *uop;
1484   gfc_intrinsic_op op;
1485 }
1486 gfc_interface_info;
1487
1488 extern gfc_interface_info current_interface;
1489
1490
1491 /* Array reference.  */
1492
1493 enum gfc_array_ref_dimen_type
1494 {
1495   DIMEN_ELEMENT = 1, DIMEN_RANGE, DIMEN_VECTOR, DIMEN_STAR, DIMEN_UNKNOWN
1496 };
1497
1498 typedef struct gfc_array_ref
1499 {
1500   ar_type type;
1501   int dimen;                    /* # of components in the reference */
1502   int codimen;
1503   bool in_allocate;             /* For coarray checks. */
1504   locus where;
1505   gfc_array_spec *as;
1506
1507   locus c_where[GFC_MAX_DIMENSIONS];    /* All expressions can be NULL */
1508   struct gfc_expr *start[GFC_MAX_DIMENSIONS], *end[GFC_MAX_DIMENSIONS],
1509     *stride[GFC_MAX_DIMENSIONS];
1510
1511   enum gfc_array_ref_dimen_type dimen_type[GFC_MAX_DIMENSIONS];
1512
1513   struct gfc_expr *offset;
1514 }
1515 gfc_array_ref;
1516
1517 #define gfc_get_array_ref() XCNEW (gfc_array_ref)
1518
1519
1520 /* Component reference nodes.  A variable is stored as an expression
1521    node that points to the base symbol.  After that, a singly linked
1522    list of component reference nodes gives the variable's complete
1523    resolution.  The array_ref component may be present and comes
1524    before the component component.  */
1525
1526 typedef enum
1527   { REF_ARRAY, REF_COMPONENT, REF_SUBSTRING }
1528 ref_type;
1529
1530 typedef struct gfc_ref
1531 {
1532   ref_type type;
1533
1534   union
1535   {
1536     struct gfc_array_ref ar;
1537
1538     struct
1539     {
1540       gfc_component *component;
1541       gfc_symbol *sym;
1542     }
1543     c;
1544
1545     struct
1546     {
1547       struct gfc_expr *start, *end;     /* Substring */
1548       gfc_charlen *length;
1549     }
1550     ss;
1551
1552   }
1553   u;
1554
1555   struct gfc_ref *next;
1556 }
1557 gfc_ref;
1558
1559 #define gfc_get_ref() XCNEW (gfc_ref)
1560
1561
1562 /* Structures representing intrinsic symbols and their arguments lists.  */
1563 typedef struct gfc_intrinsic_arg
1564 {
1565   char name[GFC_MAX_SYMBOL_LEN + 1];
1566
1567   gfc_typespec ts;
1568   unsigned optional:1, value:1;
1569   ENUM_BITFIELD (sym_intent) intent:2;
1570   gfc_actual_arglist *actual;
1571
1572   struct gfc_intrinsic_arg *next;
1573
1574 }
1575 gfc_intrinsic_arg;
1576
1577
1578 /* Specifies the various kinds of check functions used to verify the
1579    argument lists of intrinsic functions. fX with X an integer refer
1580    to check functions of intrinsics with X arguments. f1m is used for
1581    the MAX and MIN intrinsics which can have an arbitrary number of
1582    arguments, f3ml is used for the MINLOC and MAXLOC intrinsics as
1583    these have special semantics.  */
1584
1585 typedef union
1586 {
1587   gfc_try (*f0)(void);
1588   gfc_try (*f1)(struct gfc_expr *);
1589   gfc_try (*f1m)(gfc_actual_arglist *);
1590   gfc_try (*f2)(struct gfc_expr *, struct gfc_expr *);
1591   gfc_try (*f3)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *);
1592   gfc_try (*f3ml)(gfc_actual_arglist *);
1593   gfc_try (*f3red)(gfc_actual_arglist *);
1594   gfc_try (*f4)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
1595             struct gfc_expr *);
1596   gfc_try (*f5)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
1597             struct gfc_expr *, struct gfc_expr *);
1598 }
1599 gfc_check_f;
1600
1601 /* Like gfc_check_f, these specify the type of the simplification
1602    function associated with an intrinsic. The fX are just like in
1603    gfc_check_f. cc is used for type conversion functions.  */
1604
1605 typedef union
1606 {
1607   struct gfc_expr *(*f0)(void);
1608   struct gfc_expr *(*f1)(struct gfc_expr *);
1609   struct gfc_expr *(*f2)(struct gfc_expr *, struct gfc_expr *);
1610   struct gfc_expr *(*f3)(struct gfc_expr *, struct gfc_expr *,
1611                          struct gfc_expr *);
1612   struct gfc_expr *(*f4)(struct gfc_expr *, struct gfc_expr *,
1613                          struct gfc_expr *, struct gfc_expr *);
1614   struct gfc_expr *(*f5)(struct gfc_expr *, struct gfc_expr *,
1615                          struct gfc_expr *, struct gfc_expr *,
1616                          struct gfc_expr *);
1617   struct gfc_expr *(*cc)(struct gfc_expr *, bt, int);
1618 }
1619 gfc_simplify_f;
1620
1621 /* Again like gfc_check_f, these specify the type of the resolution
1622    function associated with an intrinsic. The fX are just like in
1623    gfc_check_f. f1m is used for MIN and MAX, s1 is used for abort().  */
1624
1625 typedef union
1626 {
1627   void (*f0)(struct gfc_expr *);
1628   void (*f1)(struct gfc_expr *, struct gfc_expr *);
1629   void (*f1m)(struct gfc_expr *, struct gfc_actual_arglist *);
1630   void (*f2)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *);
1631   void (*f3)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
1632              struct gfc_expr *);
1633   void (*f4)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
1634              struct gfc_expr *, struct gfc_expr *);
1635   void (*f5)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
1636              struct gfc_expr *, struct gfc_expr *, struct gfc_expr *);
1637   void (*s1)(struct gfc_code *);
1638 }
1639 gfc_resolve_f;
1640
1641
1642 typedef struct gfc_intrinsic_sym
1643 {
1644   const char *name, *lib_name;
1645   gfc_intrinsic_arg *formal;
1646   gfc_typespec ts;
1647   unsigned elemental:1, inquiry:1, transformational:1, pure:1,
1648     generic:1, specific:1, actual_ok:1, noreturn:1, conversion:1,
1649     from_module:1;
1650
1651   int standard;
1652
1653   gfc_simplify_f simplify;
1654   gfc_check_f check;
1655   gfc_resolve_f resolve;
1656   struct gfc_intrinsic_sym *specific_head, *next;
1657   gfc_isym_id id;
1658
1659 }
1660 gfc_intrinsic_sym;
1661
1662
1663 /* Expression nodes.  The expression node types deserve explanations,
1664    since the last couple can be easily misconstrued:
1665
1666    EXPR_OP         Operator node pointing to one or two other nodes
1667    EXPR_FUNCTION   Function call, symbol points to function's name
1668    EXPR_CONSTANT   A scalar constant: Logical, String, Real, Int or Complex
1669    EXPR_VARIABLE   An Lvalue with a root symbol and possible reference list
1670                    which expresses structure, array and substring refs.
1671    EXPR_NULL       The NULL pointer value (which also has a basic type).
1672    EXPR_SUBSTRING  A substring of a constant string
1673    EXPR_STRUCTURE  A structure constructor
1674    EXPR_ARRAY      An array constructor.
1675    EXPR_COMPCALL   Function (or subroutine) call of a procedure pointer
1676                    component or type-bound procedure.  */
1677
1678 #include <gmp.h>
1679 #include <mpfr.h>
1680 #include <mpc.h>
1681 #define GFC_RND_MODE GMP_RNDN
1682 #define GFC_MPC_RND_MODE MPC_RNDNN
1683
1684 typedef splay_tree gfc_constructor_base;
1685
1686 typedef struct gfc_expr
1687 {
1688   expr_t expr_type;
1689
1690   gfc_typespec ts;      /* These two refer to the overall expression */
1691
1692   int rank;
1693   mpz_t *shape;         /* Can be NULL if shape is unknown at compile time */
1694
1695   /* Nonnull for functions and structure constructors, may also used to hold the
1696      base-object for component calls.  */
1697   gfc_symtree *symtree;
1698
1699   gfc_ref *ref;
1700
1701   locus where;
1702
1703   /* is_boz is true if the integer is regarded as BOZ bitpatten and is_snan
1704      denotes a signalling not-a-number.  */
1705   unsigned int is_boz : 1, is_snan : 1;
1706
1707   /* Sometimes, when an error has been emitted, it is necessary to prevent
1708       it from recurring.  */
1709   unsigned int error : 1;
1710
1711   /* Mark an expression where a user operator has been substituted by
1712      a function call in interface.c(gfc_extend_expr).  */
1713   unsigned int user_operator : 1;
1714
1715   /* Mark an expression as being a MOLD argument of ALLOCATE.  */
1716   unsigned int mold : 1;
1717
1718   /* If an expression comes from a Hollerith constant or compile-time
1719      evaluation of a transfer statement, it may have a prescribed target-
1720      memory representation, and these cannot always be backformed from
1721      the value.  */
1722   struct
1723   {
1724     int length;
1725     char *string;
1726   }
1727   representation;
1728
1729   union
1730   {
1731     int logical;
1732
1733     io_kind iokind;
1734
1735     mpz_t integer;
1736
1737     mpfr_t real;
1738
1739     mpc_t complex;
1740
1741     struct
1742     {
1743       gfc_intrinsic_op op;
1744       gfc_user_op *uop;
1745       struct gfc_expr *op1, *op2;
1746     }
1747     op;
1748
1749     struct
1750     {
1751       gfc_actual_arglist *actual;
1752       const char *name; /* Points to the ultimate name of the function */
1753       gfc_intrinsic_sym *isym;
1754       gfc_symbol *esym;
1755     }
1756     function;
1757
1758     struct
1759     {
1760       gfc_actual_arglist* actual;
1761       const char* name;
1762       /* Base-object, whose component was called.  NULL means that it should
1763          be taken from symtree/ref.  */
1764       struct gfc_expr* base_object;
1765       gfc_typebound_proc* tbp; /* Should overlap with esym.  */
1766
1767       /* For type-bound operators, we want to call PASS procedures but already
1768          have the full arglist; mark this, so that it is not extended by the
1769          PASS argument.  */
1770       unsigned ignore_pass:1;
1771
1772       /* Do assign-calls rather than calls, that is appropriate dependency
1773          checking.  */
1774       unsigned assign:1;
1775     }
1776     compcall;
1777
1778     struct
1779     {
1780       int length;
1781       gfc_char_t *string;
1782     }
1783     character;
1784
1785     gfc_constructor_base constructor;
1786   }
1787   value;
1788
1789 }
1790 gfc_expr;
1791
1792
1793 #define gfc_get_shape(rank) ((mpz_t *) gfc_getmem((rank)*sizeof(mpz_t)))
1794
1795 /* Structures for information associated with different kinds of
1796    numbers.  The first set of integer parameters define all there is
1797    to know about a particular kind.  The rest of the elements are
1798    computed from the first elements.  */
1799
1800 typedef struct
1801 {
1802   /* Values really representable by the target.  */
1803   mpz_t huge, pedantic_min_int, min_int;
1804
1805   int kind, radix, digits, bit_size, range;
1806
1807   /* True if the C type of the given name maps to this precision.
1808      Note that more than one bit can be set.  */
1809   unsigned int c_char : 1;
1810   unsigned int c_short : 1;
1811   unsigned int c_int : 1;
1812   unsigned int c_long : 1;
1813   unsigned int c_long_long : 1;
1814 }
1815 gfc_integer_info;
1816
1817 extern gfc_integer_info gfc_integer_kinds[];
1818
1819
1820 typedef struct
1821 {
1822   int kind, bit_size;
1823
1824   /* True if the C++ type bool, C99 type _Bool, maps to this precision.  */
1825   unsigned int c_bool : 1;
1826 }
1827 gfc_logical_info;
1828
1829 extern gfc_logical_info gfc_logical_kinds[];
1830
1831
1832 typedef struct
1833 {
1834   mpfr_t epsilon, huge, tiny, subnormal;
1835   int kind, radix, digits, min_exponent, max_exponent;
1836   int range, precision;
1837
1838   /* The precision of the type as reported by GET_MODE_PRECISION.  */
1839   int mode_precision;
1840
1841   /* True if the C type of the given name maps to this precision.
1842      Note that more than one bit can be set.  */
1843   unsigned int c_float : 1;
1844   unsigned int c_double : 1;
1845   unsigned int c_long_double : 1;
1846   unsigned int c_float128 : 1;
1847 }
1848 gfc_real_info;
1849
1850 extern gfc_real_info gfc_real_kinds[];
1851
1852 typedef struct
1853 {
1854   int kind, bit_size;
1855   const char *name;
1856 }
1857 gfc_character_info;
1858
1859 extern gfc_character_info gfc_character_kinds[];
1860
1861
1862 /* Equivalence structures.  Equivalent lvalues are linked along the
1863    *eq pointer, equivalence sets are strung along the *next node.  */
1864 typedef struct gfc_equiv
1865 {
1866   struct gfc_equiv *next, *eq;
1867   gfc_expr *expr;
1868   const char *module;
1869   int used;
1870 }
1871 gfc_equiv;
1872
1873 #define gfc_get_equiv() XCNEW (gfc_equiv)
1874
1875 /* Holds a single equivalence member after processing.  */
1876 typedef struct gfc_equiv_info
1877 {
1878   gfc_symbol *sym;
1879   HOST_WIDE_INT offset;
1880   HOST_WIDE_INT length;
1881   struct gfc_equiv_info *next;
1882 } gfc_equiv_info;
1883
1884 /* Holds equivalence groups, after they have been processed.  */
1885 typedef struct gfc_equiv_list
1886 {
1887   gfc_equiv_info *equiv;
1888   struct gfc_equiv_list *next;
1889 } gfc_equiv_list;
1890
1891 /* gfc_case stores the selector list of a case statement.  The *low
1892    and *high pointers can point to the same expression in the case of
1893    a single value.  If *high is NULL, the selection is from *low
1894    upwards, if *low is NULL the selection is *high downwards.
1895
1896    This structure has separate fields to allow single and double linked
1897    lists of CASEs at the same time.  The singe linked list along the NEXT
1898    field is a list of cases for a single CASE label.  The double linked
1899    list along the LEFT/RIGHT fields is used to detect overlap and to
1900    build a table of the cases for SELECT constructs with a CHARACTER
1901    case expression.  */
1902
1903 typedef struct gfc_case
1904 {
1905   /* Where we saw this case.  */
1906   locus where;
1907   int n;
1908
1909   /* Case range values.  If (low == high), it's a single value.  If one of
1910      the labels is NULL, it's an unbounded case.  If both are NULL, this
1911      represents the default case.  */
1912   gfc_expr *low, *high;
1913
1914   /* Only used for SELECT TYPE.  */
1915   gfc_typespec ts;
1916
1917   /* Next case label in the list of cases for a single CASE label.  */
1918   struct gfc_case *next;
1919
1920   /* Used for detecting overlap, and for code generation.  */
1921   struct gfc_case *left, *right;
1922
1923   /* True if this case label can never be matched.  */
1924   int unreachable;
1925 }
1926 gfc_case;
1927
1928 #define gfc_get_case() XCNEW (gfc_case)
1929
1930
1931 typedef struct
1932 {
1933   gfc_expr *var, *start, *end, *step;
1934 }
1935 gfc_iterator;
1936
1937 #define gfc_get_iterator() XCNEW (gfc_iterator)
1938
1939
1940 /* Allocation structure for ALLOCATE, DEALLOCATE and NULLIFY statements.  */
1941
1942 typedef struct gfc_alloc
1943 {
1944   gfc_expr *expr;
1945   struct gfc_alloc *next;
1946 }
1947 gfc_alloc;
1948
1949 #define gfc_get_alloc() XCNEW (gfc_alloc)
1950
1951
1952 typedef struct
1953 {
1954   gfc_expr *unit, *file, *status, *access, *form, *recl,
1955     *blank, *position, *action, *delim, *pad, *iostat, *iomsg, *convert,
1956     *decimal, *encoding, *round, *sign, *asynchronous, *id, *newunit;
1957   gfc_st_label *err;
1958 }
1959 gfc_open;
1960
1961
1962 typedef struct
1963 {
1964   gfc_expr *unit, *status, *iostat, *iomsg;
1965   gfc_st_label *err;
1966 }
1967 gfc_close;
1968
1969
1970 typedef struct
1971 {
1972   gfc_expr *unit, *iostat, *iomsg;
1973   gfc_st_label *err;
1974 }
1975 gfc_filepos;
1976
1977
1978 typedef struct
1979 {
1980   gfc_expr *unit, *file, *iostat, *exist, *opened, *number, *named,
1981     *name, *access, *sequential, *direct, *form, *formatted,
1982     *unformatted, *recl, *nextrec, *blank, *position, *action, *read,
1983     *write, *readwrite, *delim, *pad, *iolength, *iomsg, *convert, *strm_pos,
1984     *asynchronous, *decimal, *encoding, *pending, *round, *sign, *size, *id;
1985
1986   gfc_st_label *err;
1987
1988 }
1989 gfc_inquire;
1990
1991
1992 typedef struct
1993 {
1994   gfc_expr *unit, *iostat, *iomsg, *id;
1995   gfc_st_label *err, *end, *eor;
1996 }
1997 gfc_wait;
1998
1999
2000 typedef struct
2001 {
2002   gfc_expr *io_unit, *format_expr, *rec, *advance, *iostat, *size, *iomsg,
2003            *id, *pos, *asynchronous, *blank, *decimal, *delim, *pad, *round,
2004            *sign, *extra_comma, *dt_io_kind;
2005
2006   gfc_symbol *namelist;
2007   /* A format_label of `format_asterisk' indicates the "*" format */
2008   gfc_st_label *format_label;
2009   gfc_st_label *err, *end, *eor;
2010
2011   locus eor_where, end_where, err_where;
2012 }
2013 gfc_dt;
2014
2015
2016 typedef struct gfc_forall_iterator
2017 {
2018   gfc_expr *var, *start, *end, *stride;
2019   struct gfc_forall_iterator *next;
2020 }
2021 gfc_forall_iterator;
2022
2023
2024 /* Linked list to store associations in an ASSOCIATE statement.  */
2025
2026 typedef struct gfc_association_list
2027 {
2028   struct gfc_association_list *next;
2029
2030   /* Whether this is association to a variable that can be changed; otherwise,
2031      it's association to an expression and the name may not be used as
2032      lvalue.  */
2033   unsigned variable:1;
2034
2035   /* True if this struct is currently only linked to from a gfc_symbol rather
2036      than as part of a real list in gfc_code->ext.block.assoc.  This may
2037      happen for SELECT TYPE temporaries and must be considered
2038      for memory handling.  */
2039   unsigned dangling:1;
2040
2041   char name[GFC_MAX_SYMBOL_LEN + 1];
2042   gfc_symtree *st; /* Symtree corresponding to name.  */
2043   locus where;
2044
2045   gfc_expr *target;
2046 }
2047 gfc_association_list;
2048 #define gfc_get_association_list() XCNEW (gfc_association_list)
2049
2050
2051 /* Executable statements that fill gfc_code structures.  */
2052 typedef enum
2053 {
2054   EXEC_NOP = 1, EXEC_END_BLOCK, EXEC_ASSIGN, EXEC_LABEL_ASSIGN,
2055   EXEC_POINTER_ASSIGN, EXEC_CRITICAL, EXEC_ERROR_STOP,
2056   EXEC_GOTO, EXEC_CALL, EXEC_COMPCALL, EXEC_ASSIGN_CALL, EXEC_RETURN,
2057   EXEC_ENTRY, EXEC_PAUSE, EXEC_STOP, EXEC_CONTINUE, EXEC_INIT_ASSIGN,
2058   EXEC_IF, EXEC_ARITHMETIC_IF, EXEC_DO, EXEC_DO_WHILE, EXEC_SELECT, EXEC_BLOCK,
2059   EXEC_FORALL, EXEC_WHERE, EXEC_CYCLE, EXEC_EXIT, EXEC_CALL_PPC,
2060   EXEC_ALLOCATE, EXEC_DEALLOCATE, EXEC_END_PROCEDURE, EXEC_SELECT_TYPE,
2061   EXEC_SYNC_ALL, EXEC_SYNC_MEMORY, EXEC_SYNC_IMAGES,
2062   EXEC_OPEN, EXEC_CLOSE, EXEC_WAIT,
2063   EXEC_READ, EXEC_WRITE, EXEC_IOLENGTH, EXEC_TRANSFER, EXEC_DT_END,
2064   EXEC_BACKSPACE, EXEC_ENDFILE, EXEC_INQUIRE, EXEC_REWIND, EXEC_FLUSH,
2065   EXEC_OMP_CRITICAL, EXEC_OMP_DO, EXEC_OMP_FLUSH, EXEC_OMP_MASTER,
2066   EXEC_OMP_ORDERED, EXEC_OMP_PARALLEL, EXEC_OMP_PARALLEL_DO,
2067   EXEC_OMP_PARALLEL_SECTIONS, EXEC_OMP_PARALLEL_WORKSHARE,
2068   EXEC_OMP_SECTIONS, EXEC_OMP_SINGLE, EXEC_OMP_WORKSHARE,
2069   EXEC_OMP_ATOMIC, EXEC_OMP_BARRIER, EXEC_OMP_END_NOWAIT,
2070   EXEC_OMP_END_SINGLE, EXEC_OMP_TASK, EXEC_OMP_TASKWAIT
2071 }
2072 gfc_exec_op;
2073
2074 typedef struct gfc_code
2075 {
2076   gfc_exec_op op;
2077
2078   struct gfc_code *block, *next;
2079   locus loc;
2080
2081   gfc_st_label *here, *label1, *label2, *label3;
2082   gfc_symtree *symtree;
2083   gfc_expr *expr1, *expr2, *expr3;
2084   /* A name isn't sufficient to identify a subroutine, we need the actual
2085      symbol for the interface definition.
2086   const char *sub_name;  */
2087   gfc_symbol *resolved_sym;
2088   gfc_intrinsic_sym *resolved_isym;
2089
2090   union
2091   {
2092     gfc_actual_arglist *actual;
2093     gfc_case *case_list;
2094     gfc_iterator *iterator;
2095
2096     struct
2097     {
2098       gfc_typespec ts;
2099       gfc_alloc *list;
2100     }
2101     alloc;
2102
2103     struct
2104     {
2105       gfc_namespace *ns;
2106       gfc_association_list *assoc;
2107     }
2108     block;
2109
2110     gfc_open *open;
2111     gfc_close *close;
2112     gfc_filepos *filepos;
2113     gfc_inquire *inquire;
2114     gfc_wait *wait;
2115     gfc_dt *dt;
2116     gfc_forall_iterator *forall_iterator;
2117     struct gfc_code *which_construct;
2118     int stop_code;
2119     gfc_entry_list *entry;
2120     gfc_omp_clauses *omp_clauses;
2121     const char *omp_name;
2122     gfc_namelist *omp_namelist;
2123     bool omp_bool;
2124   }
2125   ext;          /* Points to additional structures required by statement */
2126
2127   /* Cycle and break labels in constructs.  */
2128   tree cycle_label;
2129   tree exit_label;
2130 }
2131 gfc_code;
2132
2133
2134 /* Storage for DATA statements.  */
2135 typedef struct gfc_data_variable
2136 {
2137   gfc_expr *expr;
2138   gfc_iterator iter;
2139   struct gfc_data_variable *list, *next;
2140 }
2141 gfc_data_variable;
2142
2143
2144 typedef struct gfc_data_value
2145 {
2146   mpz_t repeat;
2147   gfc_expr *expr;
2148   struct gfc_data_value *next;
2149 }
2150 gfc_data_value;
2151
2152
2153 typedef struct gfc_data
2154 {
2155   gfc_data_variable *var;
2156   gfc_data_value *value;
2157   locus where;
2158
2159   struct gfc_data *next;
2160 }
2161 gfc_data;
2162
2163
2164 /* Structure for holding compile options */
2165 typedef struct
2166 {
2167   char *module_dir;
2168   gfc_source_form source_form;
2169   /* Maximum line lengths in fixed- and free-form source, respectively.
2170      When fixed_line_length or free_line_length are 0, the whole line is used,
2171      regardless of length.
2172
2173      If the user requests a fixed_line_length <7 then gfc_init_options()
2174      emits a fatal error.  */
2175   int fixed_line_length;
2176   int free_line_length;
2177   /* Maximum number of continuation lines in fixed- and free-form source,
2178      respectively.  */
2179   int max_continue_fixed;
2180   int max_continue_free;
2181   int max_identifier_length;
2182   int dump_fortran_original;
2183   int dump_fortran_optimized;
2184
2185   int warn_aliasing;
2186   int warn_ampersand;
2187   int gfc_warn_conversion;
2188   int warn_conversion_extra;
2189   int warn_implicit_interface;
2190   int warn_implicit_procedure;
2191   int warn_line_truncation;
2192   int warn_surprising;
2193   int warn_tabs;
2194   int warn_underflow;
2195   int warn_intrinsic_shadow;
2196   int warn_intrinsics_std;
2197   int warn_character_truncation;
2198   int warn_array_temp;
2199   int warn_align_commons;
2200   int warn_unused_dummy_argument;
2201   int max_errors;
2202
2203   int flag_all_intrinsics;
2204   int flag_default_double;
2205   int flag_default_integer;
2206   int flag_default_real;
2207   int flag_dollar_ok;
2208   int flag_underscoring;
2209   int flag_second_underscore;
2210   int flag_implicit_none;
2211   int flag_max_stack_var_size;
2212   int flag_max_array_constructor;
2213   int flag_range_check;
2214   int flag_pack_derived;
2215   int flag_repack_arrays;
2216   int flag_preprocessed;
2217   int flag_f2c;
2218   int flag_automatic;
2219   int flag_backslash;
2220   int flag_backtrace;
2221   int flag_allow_leading_underscore;
2222   int flag_dump_core;
2223   int flag_external_blas;
2224   int blas_matmul_limit;
2225   int flag_cray_pointer;
2226   int flag_d_lines;
2227   int gfc_flag_openmp;
2228   int flag_sign_zero;
2229   int flag_module_private;
2230   int flag_recursive;
2231   int flag_init_local_zero;
2232   int flag_init_integer;
2233   int flag_init_integer_value;
2234   int flag_init_real;
2235   int flag_init_logical;
2236   int flag_init_character;
2237   char flag_init_character_value;
2238   int flag_align_commons;
2239   int flag_whole_file;
2240   int flag_protect_parens;
2241
2242   int fpe;
2243   int rtcheck;
2244   gfc_fcoarray coarray;
2245
2246   int warn_std;
2247   int allow_std;
2248   int convert;
2249   int record_marker;
2250   int max_subrecord_length;
2251 }
2252 gfc_option_t;
2253
2254 extern gfc_option_t gfc_option;
2255
2256 /* Constructor nodes for array and structure constructors.  */
2257 typedef struct gfc_constructor
2258 {
2259   gfc_constructor_base base;
2260   mpz_t offset;               /* Offset within a constructor, used as
2261                                  key within base. */
2262
2263   gfc_expr *expr;
2264   gfc_iterator *iterator;
2265   locus where;
2266
2267   union
2268   {
2269      gfc_component *component; /* Record the component being initialized.  */
2270   }
2271   n;
2272 }
2273 gfc_constructor;
2274
2275
2276 typedef struct iterator_stack
2277 {
2278   gfc_symtree *variable;
2279   mpz_t value;
2280   struct iterator_stack *prev;
2281 }
2282 iterator_stack;
2283 extern iterator_stack *iter_stack;
2284
2285
2286 /* Used for (possibly nested) SELECT TYPE statements.  */
2287 typedef struct gfc_select_type_stack
2288 {
2289   gfc_symbol *selector;                 /* Current selector variable.  */
2290   gfc_symtree *tmp;                     /* Current temporary variable.  */
2291   struct gfc_select_type_stack *prev;   /* Previous element on stack.  */
2292 }
2293 gfc_select_type_stack;
2294 extern gfc_select_type_stack *select_type_stack;
2295 #define gfc_get_select_type_stack() XCNEW (gfc_select_type_stack)
2296
2297
2298 /* Node in the linked list used for storing finalizer procedures.  */
2299
2300 typedef struct gfc_finalizer
2301 {
2302   struct gfc_finalizer* next;
2303   locus where; /* Where the FINAL declaration occurred.  */
2304
2305   /* Up to resolution, we want the gfc_symbol, there we lookup the corresponding
2306      symtree and later need only that.  This way, we can access and call the
2307      finalizers from every context as they should be "always accessible".  I
2308      don't make this a union because we need the information whether proc_sym is
2309      still referenced or not for dereferencing it on deleting a gfc_finalizer
2310      structure.  */
2311   gfc_symbol*  proc_sym;
2312   gfc_symtree* proc_tree;
2313 }
2314 gfc_finalizer;
2315 #define gfc_get_finalizer() XCNEW (gfc_finalizer)
2316
2317
2318 /************************ Function prototypes *************************/
2319
2320 /* decl.c */
2321 bool gfc_in_match_data (void);
2322 match gfc_match_char_spec (gfc_typespec *);
2323
2324 /* scanner.c */
2325 void gfc_scanner_done_1 (void);
2326 void gfc_scanner_init_1 (void);
2327
2328 void gfc_add_include_path (const char *, bool, bool);
2329 void gfc_add_intrinsic_modules_path (const char *);
2330 void gfc_release_include_path (void);
2331 FILE *gfc_open_included_file (const char *, bool, bool);
2332 FILE *gfc_open_intrinsic_module (const char *);
2333
2334 int gfc_at_end (void);
2335 int gfc_at_eof (void);
2336 int gfc_at_bol (void);
2337 int gfc_at_eol (void);
2338 void gfc_advance_line (void);
2339 int gfc_check_include (void);
2340 int gfc_define_undef_line (void);
2341
2342 int gfc_wide_is_printable (gfc_char_t);
2343 int gfc_wide_is_digit (gfc_char_t);
2344 int gfc_wide_fits_in_byte (gfc_char_t);
2345 gfc_char_t gfc_wide_tolower (gfc_char_t);
2346 gfc_char_t gfc_wide_toupper (gfc_char_t);
2347 size_t gfc_wide_strlen (const gfc_char_t *);
2348 int gfc_wide_strncasecmp (const gfc_char_t *, const char *, size_t);
2349 gfc_char_t *gfc_wide_memset (gfc_char_t *, gfc_char_t, size_t);
2350 char *gfc_widechar_to_char (const gfc_char_t *, int);
2351 gfc_char_t *gfc_char_to_widechar (const char *);
2352
2353 #define gfc_get_wide_string(n) XCNEWVEC (gfc_char_t, n)
2354
2355 void gfc_skip_comments (void);
2356 gfc_char_t gfc_next_char_literal (int);
2357 gfc_char_t gfc_next_char (void);
2358 char gfc_next_ascii_char (void);
2359 gfc_char_t gfc_peek_char (void);
2360 char gfc_peek_ascii_char (void);
2361 void gfc_error_recovery (void);
2362 void gfc_gobble_whitespace (void);
2363 gfc_try gfc_new_file (void);
2364 const char * gfc_read_orig_filename (const char *, const char **);
2365
2366 extern gfc_source_form gfc_current_form;
2367 extern const char *gfc_source_file;
2368 extern locus gfc_current_locus;
2369
2370 void gfc_start_source_files (void);
2371 void gfc_end_source_files (void);
2372
2373 /* misc.c */
2374 void *gfc_getmem (size_t) ATTRIBUTE_MALLOC;
2375 void gfc_free (void *);
2376 int gfc_terminal_width (void);
2377 void gfc_clear_ts (gfc_typespec *);
2378 FILE *gfc_open_file (const char *);
2379 const char *gfc_basic_typename (bt);
2380 const char *gfc_typename (gfc_typespec *);
2381 const char *gfc_op2string (gfc_intrinsic_op);
2382 const char *gfc_code2string (const mstring *, int);
2383 int gfc_string2code (const mstring *, const char *);
2384 const char *gfc_intent_string (sym_intent);
2385
2386 void gfc_init_1 (void);
2387 void gfc_init_2 (void);
2388 void gfc_done_1 (void);
2389 void gfc_done_2 (void);
2390
2391 int get_c_kind (const char *, CInteropKind_t *);
2392
2393 /* options.c */
2394 unsigned int gfc_option_lang_mask (void);
2395 void gfc_init_options_struct (struct gcc_options *);
2396 void gfc_init_options (unsigned int,
2397                        struct cl_decoded_option *);
2398 bool gfc_handle_option (size_t, const char *, int, int, location_t,
2399                         const struct cl_option_handlers *);
2400 bool gfc_post_options (const char **);
2401 char *gfc_get_option_string (void);
2402
2403 /* f95-lang.c */
2404 void gfc_maybe_initialize_eh (void);
2405
2406 /* iresolve.c */
2407 const char * gfc_get_string (const char *, ...) ATTRIBUTE_PRINTF_1;
2408 bool gfc_find_sym_in_expr (gfc_symbol *, gfc_expr *);
2409
2410 /* error.c */
2411
2412 typedef struct gfc_error_buf
2413 {
2414   int flag;
2415   size_t allocated, index;
2416   char *message;
2417 } gfc_error_buf;
2418
2419 void gfc_error_init_1 (void);
2420 void gfc_buffer_error (int);
2421
2422 const char *gfc_print_wide_char (gfc_char_t);
2423
2424 void gfc_warning (const char *, ...) ATTRIBUTE_GCC_GFC(1,2);
2425 void gfc_warning_now (const char *, ...) ATTRIBUTE_GCC_GFC(1,2);
2426 void gfc_clear_warning (void);
2427 void gfc_warning_check (void);
2428
2429 void gfc_error (const char *, ...) ATTRIBUTE_GCC_GFC(1,2);
2430 void gfc_error_now (const char *, ...) ATTRIBUTE_GCC_GFC(1,2);
2431 void gfc_fatal_error (const char *, ...) ATTRIBUTE_NORETURN ATTRIBUTE_GCC_GFC(1,2);
2432 void gfc_internal_error (const char *, ...) ATTRIBUTE_NORETURN ATTRIBUTE_GCC_GFC(1,2);
2433 void gfc_clear_error (void);
2434 int gfc_error_check (void);
2435 int gfc_error_flag_test (void);
2436
2437 notification gfc_notification_std (int);
2438 gfc_try gfc_notify_std (int, const char *, ...) ATTRIBUTE_GCC_GFC(2,3);
2439
2440 /* A general purpose syntax error.  */
2441 #define gfc_syntax_error(ST)    \
2442   gfc_error ("Syntax error in %s statement at %C", gfc_ascii_statement (ST));
2443
2444 void gfc_push_error (gfc_error_buf *);
2445 void gfc_pop_error (gfc_error_buf *);
2446 void gfc_free_error (gfc_error_buf *);
2447
2448 void gfc_get_errors (int *, int *);
2449 void gfc_errors_to_warnings (int);
2450
2451 /* arith.c */
2452 void gfc_arith_init_1 (void);
2453 void gfc_arith_done_1 (void);
2454 arith gfc_check_integer_range (mpz_t p, int kind);
2455 bool gfc_check_character_range (gfc_char_t, int);
2456
2457 /* trans-types.c */
2458 gfc_try gfc_check_any_c_kind (gfc_typespec *);
2459 int gfc_validate_kind (bt, int, bool);
2460 int gfc_get_int_kind_from_width_isofortranenv (int size);
2461 int gfc_get_real_kind_from_width_isofortranenv (int size);
2462 tree gfc_get_derived_type (gfc_symbol * derived);
2463 extern int gfc_index_integer_kind;
2464 extern int gfc_default_integer_kind;
2465 extern int gfc_max_integer_kind;
2466 extern int gfc_default_real_kind;
2467 extern int gfc_default_double_kind;
2468 extern int gfc_default_character_kind;
2469 extern int gfc_default_logical_kind;
2470 extern int gfc_default_complex_kind;
2471 extern int gfc_c_int_kind;
2472 extern int gfc_intio_kind;
2473 extern int gfc_charlen_int_kind;
2474 extern int gfc_numeric_storage_size;
2475 extern int gfc_character_storage_size;
2476
2477 /* symbol.c */
2478 void gfc_clear_new_implicit (void);
2479 gfc_try gfc_add_new_implicit_range (int, int);
2480 gfc_try gfc_merge_new_implicit (gfc_typespec *);
2481 void gfc_set_implicit_none (void);
2482 void gfc_check_function_type (gfc_namespace *);
2483 bool gfc_is_intrinsic_typename (const char *);
2484
2485 gfc_typespec *gfc_get_default_type (const char *, gfc_namespace *);
2486 gfc_try gfc_set_default_type (gfc_symbol *, int, gfc_namespace *);
2487
2488 void gfc_set_sym_referenced (gfc_symbol *);
2489
2490 gfc_try gfc_add_attribute (symbol_attribute *, locus *);
2491 gfc_try gfc_add_ext_attribute (symbol_attribute *, ext_attr_id_t, locus *);
2492 gfc_try gfc_add_allocatable (symbol_attribute *, locus *);
2493 gfc_try gfc_add_codimension (symbol_attribute *, const char *, locus *);
2494 gfc_try gfc_add_contiguous (symbol_attribute *, const char *, locus *);
2495 gfc_try gfc_add_dimension (symbol_attribute *, const char *, locus *);
2496 gfc_try gfc_add_external (symbol_attribute *, locus *);
2497 gfc_try gfc_add_intrinsic (symbol_attribute *, locus *);
2498 gfc_try gfc_add_optional (symbol_attribute *, locus *);
2499 gfc_try gfc_add_pointer (symbol_attribute *, locus *);
2500 gfc_try gfc_add_cray_pointer (symbol_attribute *, locus *);
2501 gfc_try gfc_add_cray_pointee (symbol_attribute *, locus *);
2502 match gfc_mod_pointee_as (gfc_array_spec *);
2503 gfc_try gfc_add_protected (symbol_attribute *, const char *, locus *);
2504 gfc_try gfc_add_result (symbol_attribute *, const char *, locus *);
2505 gfc_try gfc_add_save (symbol_attribute *, save_state, const char *, locus *);
2506 gfc_try gfc_add_threadprivate (symbol_attribute *, const char *, locus *);
2507 gfc_try gfc_add_saved_common (symbol_attribute *, locus *);
2508 gfc_try gfc_add_target (symbol_attribute *, locus *);
2509 gfc_try gfc_add_dummy (symbol_attribute *, const char *, locus *);
2510 gfc_try gfc_add_generic (symbol_attribute *, const char *, locus *);
2511 gfc_try gfc_add_common (symbol_attribute *, locus *);
2512 gfc_try gfc_add_in_common (symbol_attribute *, const char *, locus *);
2513 gfc_try gfc_add_in_equivalence (symbol_attribute *, const char *, locus *);
2514 gfc_try gfc_add_data (symbol_attribute *, const char *, locus *);
2515 gfc_try gfc_add_in_namelist (symbol_attribute *, const char *, locus *);
2516 gfc_try gfc_add_sequence (symbol_attribute *, const char *, locus *);
2517 gfc_try gfc_add_elemental (symbol_attribute *, locus *);
2518 gfc_try gfc_add_pure (symbol_attribute *, locus *);
2519 gfc_try gfc_add_recursive (symbol_attribute *, locus *);
2520 gfc_try gfc_add_function (symbol_attribute *, const char *, locus *);
2521 gfc_try gfc_add_subroutine (symbol_attribute *, const char *, locus *);
2522 gfc_try gfc_add_volatile (symbol_attribute *, const char *, locus *);
2523 gfc_try gfc_add_asynchronous (symbol_attribute *, const char *, locus *);
2524 gfc_try gfc_add_proc (symbol_attribute *attr, const char *name, locus *where);
2525 gfc_try gfc_add_abstract (symbol_attribute* attr, locus* where);
2526
2527 gfc_try gfc_add_access (symbol_attribute *, gfc_access, const char *, locus *);
2528 gfc_try gfc_add_is_bind_c (symbol_attribute *, const char *, locus *, int);
2529 gfc_try gfc_add_extension (symbol_attribute *, locus *);
2530 gfc_try gfc_add_value (symbol_attribute *, const char *, locus *);
2531 gfc_try gfc_add_flavor (symbol_attribute *, sym_flavor, const char *, locus *);
2532 gfc_try gfc_add_entry (symbol_attribute *, const char *, locus *);
2533 gfc_try gfc_add_procedure (symbol_attribute *, procedure_type,
2534                        const char *, locus *);
2535 gfc_try gfc_add_intent (symbol_attribute *, sym_intent, locus *);
2536 gfc_try gfc_add_explicit_interface (gfc_symbol *, ifsrc,
2537                                 gfc_formal_arglist *, locus *);
2538 gfc_try gfc_add_type (gfc_symbol *, gfc_typespec *, locus *);
2539
2540 void gfc_clear_attr (symbol_attribute *);
2541 gfc_try gfc_missing_attr (symbol_attribute *, locus *);
2542 gfc_try gfc_copy_attr (symbol_attribute *, symbol_attribute *, locus *);
2543
2544 gfc_try gfc_add_component (gfc_symbol *, const char *, gfc_component **);
2545 gfc_symbol *gfc_use_derived (gfc_symbol *);
2546 gfc_symtree *gfc_use_derived_tree (gfc_symtree *);
2547 gfc_component *gfc_find_component (gfc_symbol *, const char *, bool, bool);
2548
2549 gfc_st_label *gfc_get_st_label (int);
2550 void gfc_free_st_label (gfc_st_label *);
2551 void gfc_define_st_label (gfc_st_label *, gfc_sl_type, locus *);
2552 gfc_try gfc_reference_st_label (gfc_st_label *, gfc_sl_type);
2553
2554 gfc_expr * gfc_lval_expr_from_sym (gfc_symbol *);
2555
2556 gfc_namespace *gfc_get_namespace (gfc_namespace *, int);
2557 gfc_symtree *gfc_new_symtree (gfc_symtree **, const char *);
2558 gfc_symtree *gfc_find_symtree (gfc_symtree *, const char *);
2559 void gfc_delete_symtree (gfc_symtree **, const char *);
2560 gfc_symtree *gfc_get_unique_symtree (gfc_namespace *);
2561 gfc_user_op *gfc_get_uop (const char *);
2562 gfc_user_op *gfc_find_uop (const char *, gfc_namespace *);
2563 void gfc_free_symbol (gfc_symbol *);
2564 void gfc_release_symbol (gfc_symbol *);
2565 gfc_symbol *gfc_new_symbol (const char *, gfc_namespace *);
2566 gfc_symtree* gfc_find_symtree_in_proc (const char *, gfc_namespace *);
2567 int gfc_find_symbol (const char *, gfc_namespace *, int, gfc_symbol **);
2568 int gfc_find_sym_tree (const char *, gfc_namespace *, int, gfc_symtree **);
2569 int gfc_get_symbol (const char *, gfc_namespace *, gfc_symbol **);
2570 gfc_try verify_c_interop (gfc_typespec *);
2571 gfc_try verify_c_interop_param (gfc_symbol *);
2572 gfc_try verify_bind_c_sym (gfc_symbol *, gfc_typespec *, int, gfc_common_head *);
2573 gfc_try verify_bind_c_derived_type (gfc_symbol *);
2574 gfc_try verify_com_block_vars_c_interop (gfc_common_head *);
2575 void generate_isocbinding_symbol (const char *, iso_c_binding_symbol, const char *);
2576 gfc_symbol *get_iso_c_sym (gfc_symbol *, char *, char *, int);
2577 int gfc_get_sym_tree (const char *, gfc_namespace *, gfc_symtree **, bool);
2578 int gfc_get_ha_symbol (const char *, gfc_symbol **);
2579 int gfc_get_ha_sym_tree (const char *, gfc_symtree **);
2580
2581 int gfc_symbols_could_alias (gfc_symbol *, gfc_symbol *);
2582
2583 void gfc_undo_symbols (void);
2584 void gfc_commit_symbols (void);
2585 void gfc_commit_symbol (gfc_symbol *);
2586 gfc_charlen *gfc_new_charlen (gfc_namespace *, gfc_charlen *);
2587 void gfc_free_charlen (gfc_charlen *, gfc_charlen *);
2588 void gfc_free_namespace (gfc_namespace *);
2589
2590 void gfc_symbol_init_2 (void);
2591 void gfc_symbol_done_2 (void);
2592
2593 void gfc_traverse_symtree (gfc_symtree *, void (*)(gfc_symtree *));
2594 void gfc_traverse_ns (gfc_namespace *, void (*)(gfc_symbol *));
2595 void gfc_traverse_user_op (gfc_namespace *, void (*)(gfc_user_op *));
2596 void gfc_save_all (gfc_namespace *);
2597
2598 void gfc_enforce_clean_symbol_state (void);
2599 void gfc_free_dt_list (void);
2600
2601
2602 gfc_gsymbol *gfc_get_gsymbol (const char *);
2603 gfc_gsymbol *gfc_find_gsymbol (gfc_gsymbol *, const char *);
2604
2605 gfc_typebound_proc* gfc_get_typebound_proc (gfc_typebound_proc*);
2606 gfc_symbol* gfc_get_derived_super_type (gfc_symbol*);
2607 gfc_symbol* gfc_get_ultimate_derived_super_type (gfc_symbol*);
2608 bool gfc_type_is_extension_of (gfc_symbol *, gfc_symbol *);
2609 bool gfc_type_compatible (gfc_typespec *, gfc_typespec *);
2610
2611 void gfc_copy_formal_args (gfc_symbol *, gfc_symbol *);
2612 void gfc_copy_formal_args_intr (gfc_symbol *, gfc_intrinsic_sym *);
2613 void gfc_copy_formal_args_ppc (gfc_component *, gfc_symbol *);
2614
2615 void gfc_free_finalizer (gfc_finalizer *el); /* Needed in resolve.c, too  */
2616
2617 gfc_try gfc_check_symbol_typed (gfc_symbol*, gfc_namespace*, bool, locus);
2618 gfc_namespace* gfc_find_proc_namespace (gfc_namespace*);
2619
2620 bool gfc_is_associate_pointer (gfc_symbol*);
2621
2622 /* intrinsic.c -- true if working in an init-expr, false otherwise.  */
2623 extern bool gfc_init_expr_flag;
2624
2625 /* Given a symbol that we have decided is intrinsic, mark it as such
2626    by placing it into a special module that is otherwise impossible to
2627    read or write.  */
2628
2629 #define gfc_intrinsic_symbol(SYM) SYM->module = gfc_get_string ("(intrinsic)")
2630
2631 void gfc_intrinsic_init_1 (void);
2632 void gfc_intrinsic_done_1 (void);
2633
2634 char gfc_type_letter (bt);
2635 gfc_symbol * gfc_get_intrinsic_sub_symbol (const char *);
2636 gfc_try gfc_convert_type (gfc_expr *, gfc_typespec *, int);
2637 gfc_try gfc_convert_type_warn (gfc_expr *, gfc_typespec *, int, int);
2638 gfc_try gfc_convert_chartype (gfc_expr *, gfc_typespec *);
2639 int gfc_generic_intrinsic (const char *);
2640 int gfc_specific_intrinsic (const char *);
2641 bool gfc_is_intrinsic (gfc_symbol*, int, locus);
2642 int gfc_intrinsic_actual_ok (const char *, const bool);
2643 gfc_intrinsic_sym *gfc_find_function (const char *);
2644 gfc_intrinsic_sym *gfc_find_subroutine (const char *);
2645 gfc_intrinsic_sym *gfc_intrinsic_function_by_id (gfc_isym_id);
2646
2647 match gfc_intrinsic_func_interface (gfc_expr *, int);
2648 match gfc_intrinsic_sub_interface (gfc_code *, int);
2649
2650 void gfc_warn_intrinsic_shadow (const gfc_symbol*, bool, bool);
2651 gfc_try gfc_check_intrinsic_standard (const gfc_intrinsic_sym*, const char**,
2652                                       bool, locus);
2653
2654 /* match.c -- FIXME */
2655 void gfc_free_iterator (gfc_iterator *, int);
2656 void gfc_free_forall_iterator (gfc_forall_iterator *);
2657 void gfc_free_alloc_list (gfc_alloc *);
2658 void gfc_free_namelist (gfc_namelist *);
2659 void gfc_free_equiv (gfc_equiv *);
2660 void gfc_free_equiv_until (gfc_equiv *, gfc_equiv *);
2661 void gfc_free_data (gfc_data *);
2662 void gfc_free_case_list (gfc_case *);
2663
2664 /* matchexp.c -- FIXME too?  */
2665 gfc_expr *gfc_get_parentheses (gfc_expr *);
2666
2667 /* openmp.c */
2668 void gfc_free_omp_clauses (gfc_omp_clauses *);
2669 void gfc_resolve_omp_directive (gfc_code *, gfc_namespace *);
2670 void gfc_resolve_do_iterator (gfc_code *, gfc_symbol *);
2671 void gfc_resolve_omp_parallel_blocks (gfc_code *, gfc_namespace *);
2672 void gfc_resolve_omp_do_blocks (gfc_code *, gfc_namespace *);
2673
2674 /* expr.c */
2675 void gfc_free_actual_arglist (gfc_actual_arglist *);
2676 gfc_actual_arglist *gfc_copy_actual_arglist (gfc_actual_arglist *);
2677 const char *gfc_extract_int (gfc_expr *, int *);
2678 bool is_subref_array (gfc_expr *);
2679 bool gfc_is_simply_contiguous (gfc_expr *, bool);
2680
2681 gfc_expr *gfc_build_conversion (gfc_expr *);
2682 void gfc_free_ref_list (gfc_ref *);
2683 void gfc_type_convert_binary (gfc_expr *, int);
2684 int gfc_is_constant_expr (gfc_expr *);
2685 gfc_try gfc_simplify_expr (gfc_expr *, int);
2686 int gfc_has_vector_index (gfc_expr *);
2687
2688 gfc_expr *gfc_get_expr (void);
2689 gfc_expr *gfc_get_array_expr (bt type, int kind, locus *);
2690 gfc_expr *gfc_get_null_expr (locus *);
2691 gfc_expr *gfc_get_operator_expr (locus *, gfc_intrinsic_op,gfc_expr *, gfc_expr *);
2692 gfc_expr *gfc_get_structure_constructor_expr (bt, int, locus *);
2693 gfc_expr *gfc_get_constant_expr (bt, int, locus *);
2694 gfc_expr *gfc_get_character_expr (int, locus *, const char *, int len);
2695 gfc_expr *gfc_get_int_expr (int, locus *, int);
2696 gfc_expr *gfc_get_logical_expr (int, locus *, bool);
2697 gfc_expr *gfc_get_iokind_expr (locus *, io_kind);
2698
2699 void gfc_free_expr (gfc_expr *);
2700 void gfc_replace_expr (gfc_expr *, gfc_expr *);
2701 mpz_t *gfc_copy_shape (mpz_t *, int);
2702 mpz_t *gfc_copy_shape_excluding (mpz_t *, int, gfc_expr *);
2703 gfc_expr *gfc_copy_expr (gfc_expr *);
2704 gfc_ref* gfc_copy_ref (gfc_ref*);
2705
2706 gfc_try gfc_specification_expr (gfc_expr *);
2707
2708 int gfc_numeric_ts (gfc_typespec *);
2709 int gfc_kind_max (gfc_expr *, gfc_expr *);
2710
2711 gfc_try gfc_check_conformance (gfc_expr *, gfc_expr *, const char *, ...) ATTRIBUTE_PRINTF_3;
2712 gfc_try gfc_check_assign (gfc_expr *, gfc_expr *, int);
2713 gfc_try gfc_check_pointer_assign (gfc_expr *, gfc_expr *);
2714 gfc_try gfc_check_assign_symbol (gfc_symbol *, gfc_expr *);
2715
2716 bool gfc_has_default_initializer (gfc_symbol *);
2717 gfc_expr *gfc_default_initializer (gfc_typespec *);
2718 gfc_expr *gfc_get_variable_expr (gfc_symtree *);
2719
2720 gfc_array_spec *gfc_get_full_arrayspec_from_expr (gfc_expr *expr);
2721
2722 bool gfc_traverse_expr (gfc_expr *, gfc_symbol *,
2723                         bool (*)(gfc_expr *, gfc_symbol *, int*),
2724                         int);
2725 void gfc_expr_set_symbols_referenced (gfc_expr *);
2726 gfc_try gfc_expr_check_typed (gfc_expr*, gfc_namespace*, bool);
2727 void gfc_expr_replace_symbols (gfc_expr *, gfc_symbol *);
2728 void gfc_expr_replace_comp (gfc_expr *, gfc_component *);
2729
2730 bool gfc_is_proc_ptr_comp (gfc_expr *, gfc_component **);
2731
2732 bool gfc_is_coindexed (gfc_expr *);
2733 bool gfc_get_corank (gfc_expr *);
2734 bool gfc_has_ultimate_allocatable (gfc_expr *);
2735 bool gfc_has_ultimate_pointer (gfc_expr *);
2736
2737 gfc_expr* gfc_build_intrinsic_call (const char*, locus, unsigned, ...);
2738 gfc_try gfc_check_vardef_context (gfc_expr*, bool, const char*);
2739
2740
2741 /* st.c */
2742 extern gfc_code new_st;
2743
2744 void gfc_clear_new_st (void);
2745 gfc_code *gfc_get_code (void);
2746 gfc_code *gfc_append_code (gfc_code *, gfc_code *);
2747 void gfc_free_statement (gfc_code *);
2748 void gfc_free_statements (gfc_code *);
2749 void gfc_free_association_list (gfc_association_list *);
2750
2751 /* resolve.c */
2752 gfc_try gfc_resolve_expr (gfc_expr *);
2753 void gfc_resolve (gfc_namespace *);
2754 void gfc_resolve_blocks (gfc_code *, gfc_namespace *);
2755 int gfc_impure_variable (gfc_symbol *);
2756 int gfc_pure (gfc_symbol *);
2757 int gfc_elemental (gfc_symbol *);
2758 gfc_try gfc_resolve_iterator (gfc_iterator *, bool);
2759 gfc_try find_forall_index (gfc_expr *, gfc_symbol *, int);
2760 gfc_try gfc_resolve_index (gfc_expr *, int);
2761 gfc_try gfc_resolve_dim_arg (gfc_expr *);
2762 int gfc_is_formal_arg (void);
2763 void gfc_resolve_substring_charlen (gfc_expr *);
2764 match gfc_iso_c_sub_interface(gfc_code *, gfc_symbol *);
2765 gfc_expr *gfc_expr_to_initialize (gfc_expr *);
2766 bool gfc_type_is_extensible (gfc_symbol *sym);
2767
2768
2769 /* array.c */
2770 gfc_iterator *gfc_copy_iterator (gfc_iterator *);
2771
2772 void gfc_free_array_spec (gfc_array_spec *);
2773 gfc_array_ref *gfc_copy_array_ref (gfc_array_ref *);
2774
2775 gfc_try gfc_set_array_spec (gfc_symbol *, gfc_array_spec *, locus *);
2776 gfc_array_spec *gfc_copy_array_spec (gfc_array_spec *);
2777 gfc_try gfc_resolve_array_spec (gfc_array_spec *, int);
2778
2779 int gfc_compare_array_spec (gfc_array_spec *, gfc_array_spec *);
2780
2781 void gfc_simplify_iterator_var (gfc_expr *);
2782 gfc_try gfc_expand_constructor (gfc_expr *, bool);
2783 int gfc_constant_ac (gfc_expr *);
2784 int gfc_expanded_ac (gfc_expr *);
2785 gfc_try gfc_resolve_character_array_constructor (gfc_expr *);
2786 gfc_try gfc_resolve_array_constructor (gfc_expr *);
2787 gfc_try gfc_check_constructor_type (gfc_expr *);
2788 gfc_try gfc_check_iter_variable (gfc_expr *);
2789 gfc_try gfc_check_constructor (gfc_expr *, gfc_try (*)(gfc_expr *));
2790 gfc_try gfc_array_size (gfc_expr *, mpz_t *);
2791 gfc_try gfc_array_dimen_size (gfc_expr *, int, mpz_t *);
2792 gfc_try gfc_array_ref_shape (gfc_array_ref *, mpz_t *);
2793 gfc_array_ref *gfc_find_array_ref (gfc_expr *);
2794 tree gfc_conv_array_initializer (tree type, gfc_expr *);
2795 gfc_try spec_size (gfc_array_spec *, mpz_t *);
2796 gfc_try spec_dimen_size (gfc_array_spec *, int, mpz_t *);
2797 int gfc_is_compile_time_shape (gfc_array_spec *);
2798
2799 gfc_try gfc_ref_dimen_size (gfc_array_ref *, int dimen, mpz_t *, mpz_t *);
2800
2801
2802 /* interface.c -- FIXME: some of these should be in symbol.c */
2803 void gfc_free_interface (gfc_interface *);
2804 int gfc_compare_derived_types (gfc_symbol *, gfc_symbol *);
2805 int gfc_compare_types (gfc_typespec *, gfc_typespec *);
2806 int gfc_compare_interfaces (gfc_symbol*, gfc_symbol*, const char *, int, int,
2807                             char *, int);
2808 void gfc_check_interfaces (gfc_namespace *);
2809 void gfc_procedure_use (gfc_symbol *, gfc_actual_arglist **, locus *);
2810 void gfc_ppc_use (gfc_component *, gfc_actual_arglist **, locus *);
2811 gfc_symbol *gfc_search_interface (gfc_interface *, int,
2812                                   gfc_actual_arglist **);
2813 gfc_try gfc_extend_expr (gfc_expr *, bool *);
2814 void gfc_free_formal_arglist (gfc_formal_arglist *);
2815 gfc_try gfc_extend_assign (gfc_code *, gfc_namespace *);
2816 gfc_try gfc_add_interface (gfc_symbol *);
2817 gfc_interface *gfc_current_interface_head (void);
2818 void gfc_set_current_interface_head (gfc_interface *);
2819 gfc_symtree* gfc_find_sym_in_symtree (gfc_symbol*);
2820 bool gfc_arglist_matches_symbol (gfc_actual_arglist**, gfc_symbol*);
2821 bool gfc_check_operator_interface (gfc_symbol*, gfc_intrinsic_op, locus);
2822 int gfc_has_vector_subscript (gfc_expr*);
2823
2824 /* io.c */
2825 extern gfc_st_label format_asterisk;
2826
2827 void gfc_free_open (gfc_open *);
2828 gfc_try gfc_resolve_open (gfc_open *);
2829 void gfc_free_close (gfc_close *);
2830 gfc_try gfc_resolve_close (gfc_close *);
2831 void gfc_free_filepos (gfc_filepos *);
2832 gfc_try gfc_resolve_filepos (gfc_filepos *);
2833 void gfc_free_inquire (gfc_inquire *);
2834 gfc_try gfc_resolve_inquire (gfc_inquire *);
2835 void gfc_free_dt (gfc_dt *);
2836 gfc_try gfc_resolve_dt (gfc_dt *, locus *);
2837 void gfc_free_wait (gfc_wait *);
2838 gfc_try gfc_resolve_wait (gfc_wait *);
2839
2840 /* module.c */
2841 void gfc_module_init_2 (void);
2842 void gfc_module_done_2 (void);
2843 void gfc_dump_module (const char *, int);
2844 bool gfc_check_access (gfc_access, gfc_access);
2845 void gfc_free_use_stmts (gfc_use_list *);
2846
2847 /* primary.c */
2848 symbol_attribute gfc_variable_attr (gfc_expr *, gfc_typespec *);
2849 symbol_attribute gfc_expr_attr (gfc_expr *);
2850 match gfc_match_rvalue (gfc_expr **);
2851 match gfc_match_varspec (gfc_expr*, int, bool, bool);
2852 int gfc_check_digit (char, int);
2853 bool gfc_is_function_return_value (gfc_symbol *, gfc_namespace *);
2854
2855 /* trans.c */
2856 void gfc_generate_code (gfc_namespace *);
2857 void gfc_generate_module_code (gfc_namespace *);
2858
2859 /* bbt.c */
2860 typedef int (*compare_fn) (void *, void *);
2861 void gfc_insert_bbt (void *, void *, compare_fn);
2862 void gfc_delete_bbt (void *, void *, compare_fn);
2863
2864 /* dump-parse-tree.c */
2865 void gfc_dump_parse_tree (gfc_namespace *, FILE *);
2866
2867 /* parse.c */
2868 gfc_try gfc_parse_file (void);
2869 void gfc_global_used (gfc_gsymbol *, locus *);
2870 gfc_namespace* gfc_build_block_ns (gfc_namespace *);
2871
2872 /* dependency.c */
2873 int gfc_dep_compare_expr (gfc_expr *, gfc_expr *);
2874
2875 /* check.c */
2876 gfc_try gfc_check_same_strlen (const gfc_expr*, const gfc_expr*, const char*);
2877
2878 /* class.c */
2879 void gfc_add_component_ref (gfc_expr *, const char *);
2880 #define gfc_add_data_component(e)     gfc_add_component_ref(e,"_data")
2881 #define gfc_add_vptr_component(e)     gfc_add_component_ref(e,"_vptr")
2882 #define gfc_add_hash_component(e)     gfc_add_component_ref(e,"_hash")
2883 #define gfc_add_size_component(e)     gfc_add_component_ref(e,"_size")
2884 #define gfc_add_def_init_component(e) gfc_add_component_ref(e,"_def_init")
2885 gfc_expr *gfc_class_null_initializer (gfc_typespec *);
2886 gfc_try gfc_build_class_symbol (gfc_typespec *, symbol_attribute *,
2887                                 gfc_array_spec **, bool);
2888 gfc_symbol *gfc_find_derived_vtab (gfc_symbol *);
2889 gfc_symtree* gfc_find_typebound_proc (gfc_symbol*, gfc_try*,
2890                                       const char*, bool, locus*);
2891 gfc_symtree* gfc_find_typebound_user_op (gfc_symbol*, gfc_try*,
2892                                          const char*, bool, locus*);
2893 gfc_typebound_proc* gfc_find_typebound_intrinsic_op (gfc_symbol*, gfc_try*,
2894                                                      gfc_intrinsic_op, bool,
2895                                                      locus*);
2896 gfc_symtree* gfc_get_tbp_symtree (gfc_symtree**, const char*);
2897
2898 #define CLASS_DATA(sym) sym->ts.u.derived->components
2899
2900 /* frontend-passes.c */
2901
2902 void gfc_run_passes (gfc_namespace *);
2903
2904 typedef int (*walk_code_fn_t) (gfc_code **, int *, void *);
2905 typedef int (*walk_expr_fn_t) (gfc_expr **, int *, void *);
2906
2907 int gfc_expr_walker (gfc_expr **, walk_expr_fn_t, void *);
2908 int gfc_code_walker (gfc_code **, walk_code_fn_t, walk_expr_fn_t, void *);
2909
2910 #endif /* GCC_GFORTRAN_H  */