+2004-06-25 DJ Delorie <dj@redhat.com>
+
+ * c-common.h (warn_cast_qual, warn_missing_format_attribute,
+ warn_pointer_arith, warn_missing_prototypes, warn_parentheses,
+ warn_missing_braces, warn_sign_compare, warn_long_long,
+ warn_redundant_decls, warn_float_equal, warn_char_subscripts,
+ warn_conversion, warn_format_y2k, warn_format_extra_args,
+ warn_format_zero_length, warn_format_nonliteral,
+ warn_format_security, mesg_implicit_function_declaration,
+ warn_bad_function_cast, warn_traditional,
+ warn_declaration_after_statement, warn_strict_prototypes,
+ warn_missing_declarations, warn_nested_externs,
+ warn_sequence_point, warn_init_self, warn_div_by_zero,
+ warn_implicit_int, warn_nonnull, warn_old_style_definition,
+ warn_selector, warn_undeclared_selector, warn_protocol,
+ warn_abi, warn_invalid_offsetof, warn_ctor_dtor_privacy,
+ warn_overloaded_virtual, warn_nonvdtor, warn_reorder,
+ warn_synth, warn_pmf2ptr, warn_ecpp, warn_sign_promo,
+ warn_old_style_cast, warn_nontemplate_friend,
+ warn_deprecated): Remove explicit declarations.
+ * c-common.c: Likewise, remove explicit definitions.
+ * c-opts.c: Likewise, remove explicit assignments.
+ * c.opts: Likewise, add implicit declare/define/assign.
+
2004-06-25 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
* gimplify.c (lookup_tmp_var): Set TREE_READONLY in is_formal case.
int flag_signed_bitfields = 1;
int explicit_flag_signed_bitfields;
-/* Nonzero means warn about pointer casts that can drop a type qualifier
- from the pointer target type. */
-
-int warn_cast_qual;
-
-/* Warn about functions which might be candidates for format attributes. */
-
-int warn_missing_format_attribute;
-
-/* Nonzero means warn about sizeof(function) or addition/subtraction
- of function pointers. */
-
-int warn_pointer_arith;
-
-/* Nonzero means warn for any global function def
- without separate previous prototype decl. */
-
-int warn_missing_prototypes;
-
-/* Warn if adding () is suggested. */
-
-int warn_parentheses;
-
-/* Warn if initializer is not completely bracketed. */
-
-int warn_missing_braces;
-
-/* Warn about comparison of signed and unsigned values.
- If -1, neither -Wsign-compare nor -Wno-sign-compare has been specified
- (in which case -Wextra gets to decide). */
-
-int warn_sign_compare = -1;
-
-/* Nonzero means warn about usage of long long when `-pedantic'. */
-
-int warn_long_long = 1;
-
/* Nonzero means warn about deprecated conversion from string constant to
`char *'. */
int warn_write_strings;
-/* Nonzero means warn about multiple (redundant) decls for the same single
- variable or function. */
-
-int warn_redundant_decls;
-
-/* Warn about testing equality of floating point numbers. */
-
-int warn_float_equal;
-
-/* Warn about a subscript that has type char. */
-
-int warn_char_subscripts;
-
-/* Warn if a type conversion is done that might have confusing results. */
-
-int warn_conversion;
-
/* Warn about #pragma directives that are not recognized. */
int warn_unknown_pragmas; /* Tri state variable. */
int warn_format;
-/* Warn about Y2K problems with strftime formats. */
-
-int warn_format_y2k;
-
-/* Warn about excess arguments to formats. */
-
-int warn_format_extra_args;
-
-/* Warn about zero-length formats. */
-
-int warn_format_zero_length;
-
-/* Warn about non-literal format arguments. */
-
-int warn_format_nonliteral;
-
-/* Warn about possible security problems with calls to format functions. */
-
-int warn_format_security;
-
/* Zero means that faster, ...NonNil variants of objc_msgSend...
calls will be used in ObjC; passing nil receivers to such calls
will most likely result in crashes. */
/* C/ObjC language option variables. */
-/* Nonzero means message about use of implicit function declarations;
- 1 means warning; 2 means error. */
-
-int mesg_implicit_function_declaration = -1;
-
/* Nonzero means allow type mismatches in conditional expressions;
just make their values `void'. */
int flag_hosted = 1;
-/* Nonzero means warn when casting a function call to a type that does
- not match the return type (e.g. (float)sqrt() or (anything*)malloc()
- when there is no previous declaration of sqrt or malloc. */
-
-int warn_bad_function_cast;
-
-/* Warn about traditional constructs whose meanings changed in ANSI C. */
-
-int warn_traditional;
-
-/* Nonzero means warn for a declaration found after a statement. */
-
-int warn_declaration_after_statement;
-
-/* Nonzero means warn for non-prototype function decls
- or non-prototyped defs without previous prototype. */
-
-int warn_strict_prototypes;
-
-/* Nonzero means warn for any global function def
- without separate previous decl. */
-
-int warn_missing_declarations;
-
-/* Nonzero means warn about declarations of objects not at
- file-scope level and about *all* declarations of functions (whether
- or static) not at file-scope level. Note that we exclude
- implicit function declarations. To get warnings about those, use
- -Wimplicit. */
-
-int warn_nested_externs;
-
/* Warn if main is suspicious. */
int warn_main;
-/* Nonzero means warn about possible violations of sequence point rules. */
-
-int warn_sequence_point;
-
-/* Nonzero means warn about uninitialized variable when it is initialized with itself.
- For example: int i = i;, GCC will not warn about this when warn_init_self is nonzero. */
-
-int warn_init_self;
-
-/* Nonzero means to warn about compile-time division by zero. */
-int warn_div_by_zero = 1;
-
-/* Nonzero means warn about use of implicit int. */
-
-int warn_implicit_int;
-
-/* Warn about NULL being passed to argument slots marked as requiring
- non-NULL. */
-
-int warn_nonnull;
-
-/* Warn about old-style parameter declaration. */
-
-int warn_old_style_definition;
-
/* ObjC language option variables. */
const char *constant_string_class_name;
-/* Warn if multiple methods are seen for the same selector, but with
- different argument types. Performs the check on the whole selector
- table at the end of compilation. */
-
-int warn_selector;
-
-/* Warn if a @selector() is found, and no method with that selector
- has been previously declared. The check is done on each
- @selector() as soon as it is found - so it warns about forward
- declarations. */
-
-int warn_undeclared_selector;
-
-/* Warn if methods required by a protocol are not implemented in the
- class adopting it. When turned off, methods inherited to that
- class are also considered implemented. */
-
-int warn_protocol = 1;
-
/* C++ language option variables. */
int flag_enforce_eh_specs = 1;
-/* Nonzero means warn about things that will change when compiling
- with an ABI-compliant compiler. */
-
-int warn_abi = 0;
-
-/* Nonzero means warn about invalid uses of offsetof. */
-
-int warn_invalid_offsetof = 1;
-
/* Nonzero means warn about implicit declarations. */
int warn_implicit = 1;
-/* Nonzero means warn when all ctors or dtors are private, and the class
- has no friends. */
-
-int warn_ctor_dtor_privacy = 0;
-
-/* Nonzero means warn in function declared in derived class has the
- same name as a virtual in the base class, but fails to match the
- type signature of any virtual function in the base class. */
-
-int warn_overloaded_virtual;
-
-/* Nonzero means warn when declaring a class that has a non virtual
- destructor, when it really ought to have a virtual one. */
-
-int warn_nonvdtor;
-
-/* Nonzero means warn when the compiler will reorder code. */
-
-int warn_reorder;
-
-/* Nonzero means warn when synthesis behavior differs from Cfront's. */
-
-int warn_synth;
-
-/* Nonzero means warn when we convert a pointer to member function
- into a pointer to (void or function). */
-
-int warn_pmf2ptr = 1;
-
-/* Nonzero means warn about violation of some Effective C++ style rules. */
-
-int warn_ecpp;
-
-/* Nonzero means warn where overload resolution chooses a promotion from
- unsigned to signed over a conversion to an unsigned of the same size. */
-
-int warn_sign_promo;
-
-/* Nonzero means warn when an old-style cast is used. */
-
-int warn_old_style_cast;
-
-/* Nonzero means warn when non-templatized friend functions are
- declared within a template */
-
-int warn_nontemplate_friend = 1;
-
-/* Nonzero means complain about deprecated features. */
-
-int warn_deprecated = 1;
-
/* Maximum template instantiation depth. This limit is rather
arbitrary, but it exists to limit the time it takes to notice
infinite template instantiations. */
extern int flag_signed_bitfields;
extern int explicit_flag_signed_bitfields;
-/* Nonzero means warn about pointer casts that can drop a type qualifier
- from the pointer target type. */
-
-extern int warn_cast_qual;
-
-/* Warn about functions which might be candidates for format attributes. */
-
-extern int warn_missing_format_attribute;
-
-/* Nonzero means warn about sizeof(function) or addition/subtraction
- of function pointers. */
-
-extern int warn_pointer_arith;
-
-/* Nonzero means warn for any global function def
- without separate previous prototype decl. */
-
-extern int warn_missing_prototypes;
-
-/* Warn if adding () is suggested. */
-
-extern int warn_parentheses;
-
-/* Warn if initializer is not completely bracketed. */
-
-extern int warn_missing_braces;
-
-/* Warn about comparison of signed and unsigned values.
- If -1, neither -Wsign-compare nor -Wno-sign-compare has been specified. */
-
-extern int warn_sign_compare;
-
-/* Nonzero means warn about usage of long long when `-pedantic'. */
-
-extern int warn_long_long;
-
/* Nonzero means warn about deprecated conversion from string constant to
`char *'. */
extern int warn_write_strings;
-/* Nonzero means warn about multiple (redundant) decls for the same single
- variable or function. */
-
-extern int warn_redundant_decls;
-
-/* Warn about testing equality of floating point numbers. */
-
-extern int warn_float_equal;
-
-/* Warn about a subscript that has type char. */
-
-extern int warn_char_subscripts;
-
-/* Warn if a type conversion is done that might have confusing results. */
-
-extern int warn_conversion;
-
/* Warn about #pragma directives that are not recognized. */
extern int warn_unknown_pragmas; /* Tri state variable. */
extern int warn_format;
-/* Warn about Y2K problems with strftime formats. */
-
-extern int warn_format_y2k;
-
-/* Warn about excess arguments to formats. */
-
-extern int warn_format_extra_args;
-
-/* Warn about zero-length formats. */
-
-extern int warn_format_zero_length;
-
-/* Warn about non-literal format arguments. */
-
-extern int warn_format_nonliteral;
-
-/* Warn about possible security problems with calls to format functions. */
-
-extern int warn_format_security;
-
/* C/ObjC language option variables. */
-/* Nonzero means message about use of implicit function declarations;
- 1 means warning; 2 means error. */
-
-extern int mesg_implicit_function_declaration;
-
/* Nonzero means allow type mismatches in conditional expressions;
just make their values `void'. */
extern int flag_hosted;
-/* Nonzero means warn when casting a function call to a type that does
- not match the return type (e.g. (float)sqrt() or (anything*)malloc()
- when there is no previous declaration of sqrt or malloc. */
-
-extern int warn_bad_function_cast;
-
-/* Warn about traditional constructs whose meanings changed in ANSI C. */
-
-extern int warn_traditional;
-
-/* Nonzero means warn for a declaration found after a statement. */
-
-extern int warn_declaration_after_statement;
-
-/* Nonzero means warn for non-prototype function decls
- or non-prototyped defs without previous prototype. */
-
-extern int warn_strict_prototypes;
-
-/* Nonzero means warn for any global function def
- without separate previous decl. */
-
-extern int warn_missing_declarations;
-
-/* Nonzero means warn about extern declarations of objects not at
- file-scope level and about *all* declarations of functions (whether
- extern or static) not at file-scope level. Note that we exclude
- implicit function declarations. To get warnings about those, use
- -Wimplicit. */
-
-extern int warn_nested_externs;
-
/* Warn if main is suspicious. */
extern int warn_main;
-/* Nonzero means warn about possible violations of sequence point rules. */
-
-extern int warn_sequence_point;
-
-/* Nonzero means warn about uninitialized variable when it is initialized with itself.
- For example: int i = i;, GCC will not warn about this when warn_init_self is nonzero. */
-
-extern int warn_init_self;
-
-
-/* Nonzero means to warn about compile-time division by zero. */
-extern int warn_div_by_zero;
-
-/* Nonzero means warn about use of implicit int. */
-
-extern int warn_implicit_int;
-
-/* Warn about NULL being passed to argument slots marked as requiring
- non-NULL. */
-
-extern int warn_nonnull;
-
-/* Warn about old-style parameter declaration. */
-
-extern int warn_old_style_definition;
-
/* ObjC language option variables. */
extern const char *constant_string_class_name;
-/* Warn if multiple methods are seen for the same selector, but with
- different argument types. Performs the check on the whole selector
- table at the end of compilation. */
-
-extern int warn_selector;
-
-/* Warn if a @selector() is found, and no method with that selector
- has been previously declared. The check is done on each
- @selector() as soon as it is found - so it warns about forward
- declarations. */
-
-extern int warn_undeclared_selector;
-
-/* Warn if methods required by a protocol are not implemented in the
- class adopting it. When turned off, methods inherited to that
- class are also considered implemented. */
-
-extern int warn_protocol;
-
/* C++ language option variables. */
extern int flag_enforce_eh_specs;
-/* Nonzero means warn about things that will change when compiling
- with an ABI-compliant compiler. */
-
-extern int warn_abi;
-
-/* Nonzero means warn about invalid uses of offsetof. */
-
-extern int warn_invalid_offsetof;
-
/* Nonzero means warn about implicit declarations. */
extern int warn_implicit;
-/* Nonzero means warn when all ctors or dtors are private, and the class
- has no friends. */
-
-extern int warn_ctor_dtor_privacy;
-
-/* Nonzero means warn in function declared in derived class has the
- same name as a virtual in the base class, but fails to match the
- type signature of any virtual function in the base class. */
-
-extern int warn_overloaded_virtual;
-
-/* Nonzero means warn when declaring a class that has a non virtual
- destructor, when it really ought to have a virtual one. */
-
-extern int warn_nonvdtor;
-
-/* Nonzero means warn when the compiler will reorder code. */
-
-extern int warn_reorder;
-
-/* Nonzero means warn when synthesis behavior differs from Cfront's. */
-
-extern int warn_synth;
-
-/* Nonzero means warn when we convert a pointer to member function
- into a pointer to (void or function). */
-
-extern int warn_pmf2ptr;
-
-/* Nonzero means warn about violation of some Effective C++ style rules. */
-
-extern int warn_ecpp;
-
-/* Nonzero means warn where overload resolution chooses a promotion from
- unsigned to signed over a conversion to an unsigned of the same size. */
-
-extern int warn_sign_promo;
-
-/* Nonzero means warn when an old-style cast is used. */
-
-extern int warn_old_style_cast;
-
-/* Nonzero means warn when non-templatized friend functions are
- declared within a template */
-
-extern int warn_nontemplate_friend;
-
-/* Nonzero means complain about deprecated features. */
-
-extern int warn_deprecated;
-
/* Maximum template instantiation depth. This limit is rather
arbitrary, but it exists to limit the time it takes to notice
infinite template instantiations. */
switch (code)
{
default:
+ if (cl_options[code].flags & (CL_C | CL_CXX | CL_ObjC | CL_ObjCXX))
+ break;
result = permit_fortran_options;
break;
defer_opt (code, arg);
break;
- case OPT_Wabi:
- warn_abi = value;
- break;
-
case OPT_Wall:
set_Wunused (value);
set_Wformat (value);
cpp_opts->warn_multichar = value; /* Was C++ only. */
break;
- case OPT_Wbad_function_cast:
- warn_bad_function_cast = value;
- break;
-
- case OPT_Wcast_qual:
- warn_cast_qual = value;
- break;
-
- case OPT_Wchar_subscripts:
- warn_char_subscripts = value;
- break;
-
case OPT_Wcomment:
case OPT_Wcomments:
cpp_opts->warn_comments = value;
break;
- case OPT_Wconversion:
- warn_conversion = value;
- break;
-
- case OPT_Wctor_dtor_privacy:
- warn_ctor_dtor_privacy = value;
- break;
-
- case OPT_Wdeclaration_after_statement:
- warn_declaration_after_statement = value;
- break;
-
case OPT_Wdeprecated:
- warn_deprecated = value;
cpp_opts->warn_deprecated = value;
break;
warn_div_by_zero = value;
break;
- case OPT_Weffc__:
- warn_ecpp = value;
- break;
-
case OPT_Wendif_labels:
cpp_opts->warn_endif_labels = value;
break;
mesg_implicit_function_declaration = 2;
break;
- case OPT_Wfloat_equal:
- warn_float_equal = value;
- break;
-
case OPT_Wformat:
set_Wformat (value);
break;
set_Wformat (atoi (arg));
break;
- case OPT_Wformat_extra_args:
- warn_format_extra_args = value;
- break;
-
- case OPT_Wformat_nonliteral:
- warn_format_nonliteral = value;
- break;
-
- case OPT_Wformat_security:
- warn_format_security = value;
- break;
-
- case OPT_Wformat_y2k:
- warn_format_y2k = value;
- break;
-
- case OPT_Wformat_zero_length:
- warn_format_zero_length = value;
- break;
-
- case OPT_Winit_self:
- warn_init_self = value;
- break;
-
case OPT_Wimplicit:
set_Wimplicit (value);
break;
- case OPT_Wimplicit_function_declaration:
- mesg_implicit_function_declaration = value;
- break;
-
- case OPT_Wimplicit_int:
- warn_implicit_int = value;
- break;
-
case OPT_Wimport:
/* Silently ignore for now. */
break;
- case OPT_Winvalid_offsetof:
- warn_invalid_offsetof = value;
- break;
-
case OPT_Winvalid_pch:
cpp_opts->warn_invalid_pch = value;
break;
- case OPT_Wlong_long:
- warn_long_long = value;
- break;
-
case OPT_Wmain:
if (value)
warn_main = 1;
warn_main = -1;
break;
- case OPT_Wmissing_braces:
- warn_missing_braces = value;
- break;
-
- case OPT_Wmissing_declarations:
- warn_missing_declarations = value;
- break;
-
- case OPT_Wmissing_format_attribute:
- warn_missing_format_attribute = value;
- break;
-
case OPT_Wmissing_include_dirs:
cpp_opts->warn_missing_include_dirs = value;
break;
- case OPT_Wmissing_prototypes:
- warn_missing_prototypes = value;
- break;
-
case OPT_Wmultichar:
cpp_opts->warn_multichar = value;
break;
- case OPT_Wnested_externs:
- warn_nested_externs = value;
- break;
-
- case OPT_Wnon_template_friend:
- warn_nontemplate_friend = value;
- break;
-
- case OPT_Wnon_virtual_dtor:
- warn_nonvdtor = value;
- break;
-
- case OPT_Wnonnull:
- warn_nonnull = value;
- break;
-
- case OPT_Wold_style_definition:
- warn_old_style_definition = value;
- break;
-
- case OPT_Wold_style_cast:
- warn_old_style_cast = value;
- break;
-
- case OPT_Woverloaded_virtual:
- warn_overloaded_virtual = value;
- break;
-
- case OPT_Wparentheses:
- warn_parentheses = value;
- break;
-
- case OPT_Wpmf_conversions:
- warn_pmf2ptr = value;
- break;
-
- case OPT_Wpointer_arith:
- warn_pointer_arith = value;
- break;
-
- case OPT_Wprotocol:
- warn_protocol = value;
- break;
-
- case OPT_Wselector:
- warn_selector = value;
- break;
-
- case OPT_Wredundant_decls:
- warn_redundant_decls = value;
- break;
-
- case OPT_Wreorder:
- warn_reorder = value;
- break;
-
case OPT_Wreturn_type:
warn_return_type = value;
break;
- case OPT_Wsequence_point:
- warn_sequence_point = value;
- break;
-
- case OPT_Wsign_compare:
- warn_sign_compare = value;
- break;
-
- case OPT_Wsign_promo:
- warn_sign_promo = value;
- break;
-
- case OPT_Wstrict_prototypes:
- warn_strict_prototypes = value;
- break;
-
- case OPT_Wsynth:
- warn_synth = value;
- break;
-
case OPT_Wsystem_headers:
cpp_opts->warn_system_headers = value;
break;
case OPT_Wtraditional:
- warn_traditional = value;
cpp_opts->warn_traditional = value;
break;
cpp_opts->warn_trigraphs = value;
break;
- case OPT_Wundeclared_selector:
- warn_undeclared_selector = value;
- break;
-
case OPT_Wundef:
cpp_opts->warn_undef = value;
break;
-U<macro> Undefine <macro>
Wabi
-C++ ObjC++
+C++ ObjC++ Var(warn_abi)
+Warn about things that will change when compiling with an ABI-compliant compiler
Wall
C ObjC C++ ObjC++
Enable most warning messages
Wbad-function-cast
-C ObjC
+C ObjC Var(warn_bad_function_cast)
Warn about casting functions to incompatible types
Wcast-qual
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_cast_qual)
Warn about casts which discard qualifiers
Wchar-subscripts
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_char_subscripts)
Warn about subscripts whose type is \"char\"
Wcomment
Synonym for -Wcomment
Wconversion
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_conversion)
Warn about possibly confusing type conversions
Wctor-dtor-privacy
-C++ ObjC++
+C++ ObjC++ Var(warn_ctor_dtor_privacy)
Warn when all constructors and destructors are private
Wdeclaration-after-statement
-C ObjC
+C ObjC Var(warn_declaration_after_statement)
Warn when a declaration is found after a statement
Wdeprecated
-C++ ObjC++
+C++ ObjC++ Var(warn_deprecated) Init(1)
Warn about deprecated compiler features
Wdiv-by-zero
-C ObjC
+C ObjC Var(warn_div_by_zero) Init(1)
Warn about compile-time integer division by zero
Weffc++
-C++ ObjC++
+C++ ObjC++ Var(warn_ecpp)
Warn about violations of Effective C++ style rules
Wendif-labels
Make implicit function declarations an error
Wfloat-equal
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_float_equal)
Warn if testing floating point numbers for equality
Wformat
Warn about printf/scanf/strftime/strfmon format string anomalies
Wformat-extra-args
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_format_extra_args)
Warn if passing too many arguments to a function for its format string
Wformat-nonliteral
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_format_nonliteral)
Warn about format strings that are not literals
Wformat-security
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_format_security)
Warn about possible security problems with format functions
Wformat-y2k
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_format_y2k)
Warn about strftime formats yielding 2-digit years
Wformat-zero-length
-C ObjC
+C ObjC Var(warn_format_zero_length)
+Warn about zero-length formats
Wformat=
C ObjC C++ ObjC++ Joined
Winit-self
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_init_self)
Warn about variables which are initialized to themselves.
Wimplicit
C ObjC C++ ObjC++
Wimplicit-function-declaration
-C ObjC
+C ObjC Var(mesg_implicit_function_declaration) Init(-1)
Warn about implicit function declarations
Wimplicit-int
-C ObjC
+C ObjC Var(warn_implicit_int)
Warn when a declaration does not specify a type
Wimport
Deprecated. This switch has no effect.
Winvalid-offsetof
-C++ ObjC++
+C++ ObjC++ Var(warn_invalid_offsetof) Init(1)
Warn about invalid uses of the \"offsetof\" macro
Winvalid-pch
Warn about PCH files that are found but not used
Wlong-long
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_long_long) Init(1)
Do not warn about using \"long long\" when -pedantic
Wmain
Warn about suspicious declarations of \"main\"
Wmissing-braces
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_missing_braces)
Warn about possibly missing braces around initializers
Wmissing-declarations
-C ObjC
+C ObjC Var(warn_missing_declarations)
Warn about global functions without previous declarations
Wmissing-format-attribute
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_missing_format_attribute)
Warn about functions which might be candidates for format attributes
Wmissing-include-dirs
Warn about user-specified include directories that do not exist
Wmissing-prototypes
-C ObjC
+C ObjC Var(warn_missing_prototypes)
Warn about global functions without prototypes
Wmultichar
Warn about use of multi-character character constants
Wnested-externs
-C ObjC
+C ObjC Var(warn_nested_externs)
Warn about \"extern\" declarations not at file scope
Wnon-template-friend
-C++ ObjC++
+C++ ObjC++ Var(warn_nontemplate_friend) Init(1)
Warn when non-templatized friend functions are declared within a template
Wnon-virtual-dtor
-C++ ObjC++
+C++ ObjC++ Var(warn_nonvdtor)
Warn about non-virtual destructors
Wnonnull
-C ObjC
+C ObjC Var(warn_nonnull)
+Warn about NULL being passed to argument slots marked as requiring non-NULL
Wold-style-cast
-C++ ObjC++
+C++ ObjC++ Var(warn_old_style_cast)
Warn if a C-style cast is used in a program
Wold-style-definition
-C ObjC
+C ObjC Var(warn_old_style_definition)
Warn if an old-style parameter definition is used
Woverloaded-virtual
-C++ ObjC++
+C++ ObjC++ Var(warn_overloaded_virtual)
Warn about overloaded virtual function names
Wparentheses
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_parentheses)
Warn about possibly missing parentheses
Wpmf-conversions
-C++ ObjC++
+C++ ObjC++ Var(warn_pmf2ptr) Init(1)
Warn when converting the type of pointers to member functions
Wpointer-arith
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_pointer_arith)
Warn about function pointer arithmetic
Wprotocol
-ObjC ObjC++
+ObjC ObjC++ Var(warn_protocol) Init(1)
Warn if inherited methods are unimplemented
Wredundant-decls
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_redundant_decls)
Warn about multiple declarations of the same object
Wreorder
-C++ ObjC++
+C++ ObjC++ Var(warn_reorder)
Warn when the compiler reorders code
Wreturn-type
Warn whenever a function's return type defaults to \"int\" (C), or about inconsistent return types (C++)
Wselector
-ObjC ObjC++
+ObjC ObjC++ Var(warn_selector)
Warn if a selector has multiple methods
Wsequence-point
-C ObjC
+C ObjC Var(warn_sequence_point)
Warn about possible violations of sequence point rules
Wsign-compare
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_sign_compare) Init(-1)
Warn about signed-unsigned comparisons
Wsign-promo
-C++ ObjC++
+C++ ObjC++ Var(warn_sign_promo)
Warn when overload promotes from unsigned to signed
Wstrict-prototypes
-C ObjC
+C ObjC Var(warn_strict_prototypes)
Warn about unprototyped function declarations
Wsynth
-C++ ObjC++
+C++ ObjC++ Var(warn_synth)
Warn when synthesis behavior differs from Cfront
Wsystem-headers
Do not suppress warnings from system headers
Wtraditional
-C ObjC
+C ObjC Var(warn_traditional)
Warn about features not present in traditional C
Wtrigraphs
Warn if trigraphs are encountered that might affect the meaning of the program
Wundeclared-selector
-ObjC ObjC++
+ObjC ObjC++ Var(warn_undeclared_selector)
+Warn about @selector()s without previously declared methods
Wundef
C ObjC C++ ObjC++
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