/* Language-independent diagnostic subroutines for the GNU Compiler Collection
- Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
- 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
+ Copyright (C) 1999-2014 Free Software Foundation, Inc.
Contributed by Gabriel Dos Reis <gdr@codesourcery.com>
This file is part of GCC.
#include "system.h"
#include "coretypes.h"
#include "version.h"
+#include "demangle.h"
#include "input.h"
#include "intl.h"
+#include "backtrace.h"
#include "diagnostic.h"
+#include "diagnostic-color.h"
+
+#include <new> // For placement new.
#define pedantic_warning_kind(DC) \
((DC)->pedantic_errors ? DK_ERROR : DK_WARNING)
#define permissive_error_option(DC) ((DC)->opt_permissive)
/* Prototypes. */
-static char *build_message_string (const char *, ...) ATTRIBUTE_PRINTF_1;
-
static void error_recursion (diagnostic_context *) ATTRIBUTE_NORETURN;
static void diagnostic_action_after_output (diagnostic_context *,
/* A diagnostic_context surrogate for stderr. */
static diagnostic_context global_diagnostic_context;
diagnostic_context *global_dc = &global_diagnostic_context;
-
\f
/* Return a malloc'd string containing MSG formatted a la printf. The
caller is responsible for freeing the memory. */
-static char *
+char *
build_message_string (const char *msg, ...)
{
char *str;
/* Same as diagnostic_build_prefix, but only the source FILE is given. */
char *
-file_name_as_prefix (const char *f)
+file_name_as_prefix (diagnostic_context *context, const char *f)
{
- return build_message_string ("%s: ", f);
+ const char *locus_cs
+ = colorize_start (pp_show_color (context->printer), "locus");
+ const char *locus_ce = colorize_stop (pp_show_color (context->printer));
+ return build_message_string ("%s%s:%s ", locus_cs, f, locus_ce);
}
{
/* One minus to account for the leading empty space. */
value = value ? value - 1
- : (isatty (fileno (context->printer->buffer->stream))
+ : (isatty (fileno (pp_buffer (context->printer)->stream))
? getenv_columns () - 1: INT_MAX);
if (value <= 0)
/* Allocate a basic pretty-printer. Clients will replace this a
much more elaborated pretty-printer if they wish. */
context->printer = XNEW (pretty_printer);
- pp_construct (context->printer, NULL, 0);
- /* By default, diagnostics are sent to stderr. */
- context->printer->buffer->stream = stderr;
- /* By default, we emit prefixes once per message. */
- context->printer->wrapping.rule = DIAGNOSTICS_SHOW_PREFIX_ONCE;
+ new (context->printer) pretty_printer ();
memset (context->diagnostic_count, 0, sizeof context->diagnostic_count);
context->some_warnings_are_errors = false;
context->classify_diagnostic[i] = DK_UNSPECIFIED;
context->show_caret = false;
diagnostic_set_caret_max_width (context, pp_line_cutoff (context->printer));
+ context->caret_char = '^';
context->show_option_requested = false;
context->abort_on_error = false;
context->show_column = false;
context->option_enabled = NULL;
context->option_state = NULL;
context->option_name = NULL;
+ context->last_location = UNKNOWN_LOCATION;
context->last_module = 0;
context->x_data = NULL;
context->lock = 0;
pp_verbatim (context->printer,
_("%s: some warnings being treated as errors"),
progname);
- pp_flush (context->printer);
+ pp_newline_and_flush (context->printer);
}
+
+ diagnostic_file_cache_fini ();
+
+ XDELETEVEC (context->classify_diagnostic);
+ context->classify_diagnostic = NULL;
+
+ /* diagnostic_initialize allocates context->printer using XNEW
+ and placement-new. */
+ context->printer->~pretty_printer ();
+ XDELETE (context->printer);
+ context->printer = NULL;
}
/* Initialize DIAGNOSTIC, where the message MSG has already been
responsible for freeing the memory. */
char *
diagnostic_build_prefix (diagnostic_context *context,
- diagnostic_info *diagnostic)
+ const diagnostic_info *diagnostic)
{
static const char *const diagnostic_kind_text[] = {
-#define DEFINE_DIAGNOSTIC_KIND(K, T) (T),
+#define DEFINE_DIAGNOSTIC_KIND(K, T, C) (T),
#include "diagnostic.def"
#undef DEFINE_DIAGNOSTIC_KIND
"must-not-happen"
};
+ static const char *const diagnostic_kind_color[] = {
+#define DEFINE_DIAGNOSTIC_KIND(K, T, C) (C),
+#include "diagnostic.def"
+#undef DEFINE_DIAGNOSTIC_KIND
+ NULL
+ };
const char *text = _(diagnostic_kind_text[diagnostic->kind]);
- expanded_location s = expand_location (diagnostic->location);
+ const char *text_cs = "", *text_ce = "";
+ const char *locus_cs, *locus_ce;
+ pretty_printer *pp = context->printer;
+
+ if (diagnostic_kind_color[diagnostic->kind])
+ {
+ text_cs = colorize_start (pp_show_color (pp),
+ diagnostic_kind_color[diagnostic->kind]);
+ text_ce = colorize_stop (pp_show_color (pp));
+ }
+ locus_cs = colorize_start (pp_show_color (pp), "locus");
+ locus_ce = colorize_stop (pp_show_color (pp));
+
+ expanded_location s = expand_location_to_spelling_point (diagnostic->location);
if (diagnostic->override_column)
s.column = diagnostic->override_column;
gcc_assert (diagnostic->kind < DK_LAST_DIAGNOSTIC_KIND);
return
(s.file == NULL
- ? build_message_string ("%s: %s", progname, text)
+ ? build_message_string ("%s%s:%s %s%s%s", locus_cs, progname, locus_ce,
+ text_cs, text, text_ce)
+ : !strcmp (s.file, N_("<built-in>"))
+ ? build_message_string ("%s%s:%s %s%s%s", locus_cs, s.file, locus_ce,
+ text_cs, text, text_ce)
: context->show_column
- ? build_message_string ("%s:%d:%d: %s", s.file, s.line, s.column, text)
- : build_message_string ("%s:%d: %s", s.file, s.line, text));
+ ? build_message_string ("%s%s:%d:%d:%s %s%s%s", locus_cs, s.file, s.line,
+ s.column, locus_ce, text_cs, text, text_ce)
+ : build_message_string ("%s%s:%d:%s %s%s%s", locus_cs, s.file, s.line, locus_ce,
+ text_cs, text, text_ce));
}
/* If LINE is longer than MAX_WIDTH, and COLUMN is not smaller than
MAX_WIDTH by some margin, then adjust the start of the line such
that the COLUMN is smaller than MAX_WIDTH minus the margin. The
margin is either 10 characters or the difference between the column
- and the length of the line, whatever is smaller. */
+ and the length of the line, whatever is smaller. The length of
+ LINE is given by LINE_WIDTH. */
static const char *
-adjust_line (const char *line, int max_width, int *column_p)
+adjust_line (const char *line, int line_width,
+ int max_width, int *column_p)
{
int right_margin = 10;
- int line_width = strlen (line);
int column = *column_p;
- right_margin = MIN(line_width - column, right_margin);
+ gcc_checking_assert (line_width >= column);
+ right_margin = MIN (line_width - column, right_margin);
right_margin = max_width - right_margin;
if (line_width >= max_width && column > right_margin)
{
}
/* Print the physical source line corresponding to the location of
- this diagnostics, and a caret indicating the precise column. */
+ this diagnostic, and a caret indicating the precise column. */
void
diagnostic_show_locus (diagnostic_context * context,
const diagnostic_info *diagnostic)
{
const char *line;
+ int line_width;
char *buffer;
expanded_location s;
int max_width;
const char *saved_prefix;
-
+ const char *caret_cs, *caret_ce;
if (!context->show_caret
- || diagnostic->location <= BUILTINS_LOCATION)
+ || diagnostic->location <= BUILTINS_LOCATION
+ || diagnostic->location == context->last_location)
return;
- s = expand_location(diagnostic->location);
- line = location_get_source_line (s);
- if (line == NULL)
+ context->last_location = diagnostic->location;
+ s = expand_location_to_spelling_point (diagnostic->location);
+ line = location_get_source_line (s, &line_width);
+ if (line == NULL || s.column > line_width)
return;
max_width = context->caret_max_width;
- line = adjust_line (line, max_width, &(s.column));
+ line = adjust_line (line, line_width, max_width, &(s.column));
pp_newline (context->printer);
saved_prefix = pp_get_prefix (context->printer);
pp_set_prefix (context->printer, NULL);
- pp_character (context->printer, ' ');
- while (max_width > 0 && *line != '\0')
+ pp_space (context->printer);
+ while (max_width > 0 && line_width > 0)
{
char c = *line == '\t' ? ' ' : *line;
+ if (c == '\0')
+ c = ' ';
pp_character (context->printer, c);
max_width--;
+ line_width--;
line++;
}
pp_newline (context->printer);
+ caret_cs = colorize_start (pp_show_color (context->printer), "caret");
+ caret_ce = colorize_stop (pp_show_color (context->printer));
+
/* pp_printf does not implement %*c. */
- buffer = XALLOCAVEC (char, s.column + 3);
- snprintf (buffer, s.column + 3, " %*c", s.column, '^');
+ size_t len = s.column + 3 + strlen (caret_cs) + strlen (caret_ce);
+ buffer = XALLOCAVEC (char, len);
+ snprintf (buffer, len, "%s %*c%s", caret_cs, s.column, context->caret_char,
+ caret_ce);
pp_string (context->printer, buffer);
pp_set_prefix (context->printer, saved_prefix);
+ pp_needs_newline (context->printer) = true;
+}
+
+/* Functions at which to stop the backtrace print. It's not
+ particularly helpful to print the callers of these functions. */
+
+static const char * const bt_stop[] =
+{
+ "main",
+ "toplev::main",
+ "execute_one_pass",
+ "compile_file",
+};
+
+/* A callback function passed to the backtrace_full function. */
+
+static int
+bt_callback (void *data, uintptr_t pc, const char *filename, int lineno,
+ const char *function)
+{
+ int *pcount = (int *) data;
+
+ /* If we don't have any useful information, don't print
+ anything. */
+ if (filename == NULL && function == NULL)
+ return 0;
+
+ /* Skip functions in diagnostic.c. */
+ if (*pcount == 0
+ && filename != NULL
+ && strcmp (lbasename (filename), "diagnostic.c") == 0)
+ return 0;
+
+ /* Print up to 20 functions. We could make this a --param, but
+ since this is only for debugging just use a constant for now. */
+ if (*pcount >= 20)
+ {
+ /* Returning a non-zero value stops the backtrace. */
+ return 1;
+ }
+ ++*pcount;
+
+ char *alc = NULL;
+ if (function != NULL)
+ {
+ char *str = cplus_demangle_v3 (function,
+ (DMGL_VERBOSE | DMGL_ANSI
+ | DMGL_GNU_V3 | DMGL_PARAMS));
+ if (str != NULL)
+ {
+ alc = str;
+ function = str;
+ }
+
+ for (size_t i = 0; i < ARRAY_SIZE (bt_stop); ++i)
+ {
+ size_t len = strlen (bt_stop[i]);
+ if (strncmp (function, bt_stop[i], len) == 0
+ && (function[len] == '\0' || function[len] == '('))
+ {
+ if (alc != NULL)
+ free (alc);
+ /* Returning a non-zero value stops the backtrace. */
+ return 1;
+ }
+ }
+ }
+
+ fprintf (stderr, "0x%lx %s\n\t%s:%d\n",
+ (unsigned long) pc,
+ function == NULL ? "???" : function,
+ filename == NULL ? "???" : filename,
+ lineno);
+
+ if (alc != NULL)
+ free (alc);
+
+ return 0;
+}
+
+/* A callback function passed to the backtrace_full function. This is
+ called if backtrace_full has an error. */
+
+static void
+bt_err_callback (void *data ATTRIBUTE_UNUSED, const char *msg, int errnum)
+{
+ if (errnum < 0)
+ {
+ /* This means that no debug info was available. Just quietly
+ skip printing backtrace info. */
+ return;
+ }
+ fprintf (stderr, "%s%s%s\n", msg, errnum == 0 ? "" : ": ",
+ errnum == 0 ? "" : xstrerror (errnum));
}
/* Take any action which is expected to happen after the diagnostic
break;
case DK_ICE:
- if (context->abort_on_error)
- real_abort ();
+ {
+ struct backtrace_state *state =
+ backtrace_create_state (NULL, 0, bt_err_callback, NULL);
+ int count = 0;
+ if (state != NULL)
+ backtrace_full (state, 2, bt_callback, bt_err_callback,
+ (void *) &count);
+
+ if (context->abort_on_error)
+ real_abort ();
+
+ fnotice (stderr, "Please submit a full bug report,\n"
+ "with preprocessed source if appropriate.\n");
+ if (count > 0)
+ fnotice (stderr,
+ ("Please include the complete backtrace "
+ "with any bug report.\n"));
+ fnotice (stderr, "See %s for instructions.\n", bug_report_url);
- fnotice (stderr, "Please submit a full bug report,\n"
- "with preprocessed source if appropriate.\n"
- "See %s for instructions.\n", bug_report_url);
- exit (ICE_EXIT_CODE);
+ exit (ICE_EXIT_CODE);
+ }
case DK_FATAL:
if (context->abort_on_error)
map = INCLUDED_FROM (line_table, map);
if (context->show_column)
pp_verbatim (context->printer,
- "In file included from %s:%d:%d",
+ "In file included from %r%s:%d:%d%R", "locus",
LINEMAP_FILE (map),
LAST_SOURCE_LINE (map), LAST_SOURCE_COLUMN (map));
else
pp_verbatim (context->printer,
- "In file included from %s:%d",
+ "In file included from %r%s:%d%R", "locus",
LINEMAP_FILE (map), LAST_SOURCE_LINE (map));
while (! MAIN_FILE_P (map))
{
map = INCLUDED_FROM (line_table, map);
pp_verbatim (context->printer,
- ",\n from %s:%d",
+ ",\n from %r%s:%d%R", "locus",
LINEMAP_FILE (map), LAST_SOURCE_LINE (map));
}
pp_verbatim (context->printer, ":");
void
default_diagnostic_finalizer (diagnostic_context *context,
- diagnostic_info *diagnostic ATTRIBUTE_UNUSED)
+ diagnostic_info *diagnostic)
{
+ diagnostic_show_locus (context, diagnostic);
pp_destroy_prefix (context->printer);
+ pp_newline_and_flush (context->printer);
}
/* Interface to specify diagnostic kind overrides. Returns the
previous setting, or DK_UNSPECIFIED if the parameters are out of
- range. */
+ range. If OPTION_INDEX is zero, the new setting is for all the
+ diagnostics. */
diagnostic_t
diagnostic_classify_diagnostic (diagnostic_context *context,
int option_index,
{
diagnostic_t old_kind;
- if (option_index <= 0
+ if (option_index < 0
|| option_index >= context->n_opts
|| new_kind >= DK_LAST_DIAGNOSTIC_KIND)
return DK_UNSPECIFIED;
{
int i;
+ /* Record the command-line status, so we can reset it back on DK_POP. */
+ if (old_kind == DK_UNSPECIFIED)
+ {
+ old_kind = context->option_enabled (option_index,
+ context->option_state)
+ ? DK_WARNING : DK_IGNORED;
+ context->classify_diagnostic[option_index] = old_kind;
+ }
+
for (i = context->n_classification_history - 1; i >= 0; i --)
if (context->classification_history[i].option == option_index)
{
try to flush out the previous error, then let this one
through. Don't do this more than once. */
if (diagnostic->kind == DK_ICE && context->lock == 1)
- pp_flush (context->printer);
+ pp_newline_and_flush (context->printer);
else
error_recursion (context);
}
diagnostic->kind = DK_ERROR;
}
- if (diagnostic->option_index)
+ if (diagnostic->option_index
+ && diagnostic->option_index != permissive_error_option (context))
{
diagnostic_t diag_class = DK_UNSPECIFIED;
/* This tests for #pragma diagnostic changes. */
if (context->n_classification_history > 0)
{
- int i;
/* FIXME: Stupid search. Optimize later. */
- for (i = context->n_classification_history - 1; i >= 0; i --)
+ for (int i = context->n_classification_history - 1; i >= 0; i --)
{
if (linemap_location_before_p
(line_table,
i = context->classification_history[i].option;
continue;
}
- if (context->classification_history[i].option == diagnostic->option_index)
+ int option = context->classification_history[i].option;
+ /* The option 0 is for all the diagnostics. */
+ if (option == 0 || option == diagnostic->option_index)
{
diag_class = context->classification_history[i].kind;
if (diag_class != DK_UNSPECIFIED)
diagnostic->message.format_spec,
diagnostic->message.args_ptr);
}
- ++diagnostic_kind_count (context, diagnostic->kind);
+ if (diagnostic->kind == DK_ERROR && orig_diag_kind == DK_WARNING)
+ ++diagnostic_kind_count (context, DK_WERROR);
+ else
+ ++diagnostic_kind_count (context, diagnostic->kind);
saved_format_spec = diagnostic->message.format_spec;
if (context->show_option_requested)
pp_format (context->printer, &diagnostic->message);
(*diagnostic_starter (context)) (context, diagnostic);
pp_output_formatted_text (context->printer);
- diagnostic_show_locus (context, diagnostic);
(*diagnostic_finalizer (context)) (context, diagnostic);
- pp_flush (context->printer);
diagnostic_action_after_output (context, diagnostic);
diagnostic->message.format_spec = saved_format_spec;
diagnostic->x_data = NULL;
text.locus = NULL;
text.x_data = NULL;
pp_format_verbatim (global_dc->printer, &text);
- pp_flush (global_dc->printer);
+ pp_newline_and_flush (global_dc->printer);
+ va_end (ap);
+}
+
+/* Add a note with text GMSGID and with LOCATION to the diagnostic CONTEXT. */
+void
+diagnostic_append_note (diagnostic_context *context,
+ location_t location,
+ const char * gmsgid, ...)
+{
+ diagnostic_info diagnostic;
+ va_list ap;
+ const char *saved_prefix;
+
+ va_start (ap, gmsgid);
+ diagnostic_set_info (&diagnostic, gmsgid, &ap, location, DK_NOTE);
+ if (context->inhibit_notes_p)
+ {
+ va_end (ap);
+ return;
+ }
+ saved_prefix = pp_get_prefix (context->printer);
+ pp_set_prefix (context->printer,
+ diagnostic_build_prefix (context, &diagnostic));
+ pp_newline (context->printer);
+ pp_format (context->printer, &diagnostic.message);
+ pp_output_formatted_text (context->printer);
+ pp_destroy_prefix (context->printer);
+ pp_set_prefix (context->printer, saved_prefix);
+ diagnostic_show_locus (context, &diagnostic);
va_end (ap);
}
return ret;
}
+/* A warning at LOCATION. Use this for code which is correct according to the
+ relevant language specification but is likely to be buggy anyway.
+ Returns true if the warning was printed, false if it was inhibited. */
+
+bool
+warning_n (location_t location, int opt, int n, const char *singular_gmsgid,
+ const char *plural_gmsgid, ...)
+{
+ diagnostic_info diagnostic;
+ va_list ap;
+ bool ret;
+
+ va_start (ap, plural_gmsgid);
+ diagnostic_set_info_translated (&diagnostic,
+ ngettext (singular_gmsgid, plural_gmsgid, n),
+ &ap, location, DK_WARNING);
+ diagnostic.option_index = opt;
+ ret = report_diagnostic (&diagnostic);
+ va_end (ap);
+ return ret;
+}
+
/* A "pedantic" warning at LOCATION: issues a warning unless
-pedantic-errors was given on the command line, in which case it
issues an error. Use this for diagnostics required by the relevant
language standard, if you have chosen not to make them errors.
Note that these diagnostics are issued independent of the setting
- of the -pedantic command-line switch. To get a warning enabled
+ of the -Wpedantic command-line switch. To get a warning enabled
only with that switch, use either "if (pedantic) pedwarn
- (OPT_pedantic,...)" or just "pedwarn (OPT_pedantic,..)". To get a
- pedwarn independently of the -pedantic switch use "pedwarn (0,...)".
+ (OPT_Wpedantic,...)" or just "pedwarn (OPT_Wpedantic,..)". To get a
+ pedwarn independently of the -Wpedantic switch use "pedwarn (0,...)".
Returns true if the warning was printed, false if it was inhibited. */
gcc_unreachable ();
}
+/* An error which is severe enough that we make no attempt to
+ continue. Do not use this for internal consistency checks; that's
+ internal_error. Use of this function should be rare. */
+void
+fatal_error (location_t loc, const char *gmsgid, ...)
+{
+ diagnostic_info diagnostic;
+ va_list ap;
+
+ va_start (ap, gmsgid);
+ diagnostic_set_info (&diagnostic, gmsgid, &ap, loc, DK_FATAL);
+ report_diagnostic (&diagnostic);
+ va_end (ap);
+
+ gcc_unreachable ();
+}
+
/* An internal consistency check has failed. We make no attempt to
continue. Note that unless there is debugging value to be had from
a more specific message, or some other good reason, you should use
diagnostic_info diagnostic;
if (context->lock < 3)
- pp_flush (context->printer);
+ pp_newline_and_flush (context->printer);
fnotice (stderr,
"Internal compiler error: Error reporting routines re-entered.\n");
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