1605 lines
46 KiB
C
1605 lines
46 KiB
C
/* Language-independent diagnostic subroutines for the GNU Compiler Collection
|
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Copyright (C) 1999-2016 Free Software Foundation, Inc.
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Contributed by Gabriel Dos Reis <gdr@codesourcery.com>
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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/* This file implements the language independent aspect of diagnostic
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message module. */
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#include "config.h"
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#include "system.h"
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#include "coretypes.h"
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#include "version.h"
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#include "demangle.h"
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#include "intl.h"
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#include "backtrace.h"
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#include "diagnostic.h"
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#include "diagnostic-color.h"
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#include "edit-context.h"
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#include "selftest.h"
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#ifdef HAVE_TERMIOS_H
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# include <termios.h>
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#endif
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#ifdef GWINSZ_IN_SYS_IOCTL
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# include <sys/ioctl.h>
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#endif
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#define pedantic_warning_kind(DC) \
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((DC)->pedantic_errors ? DK_ERROR : DK_WARNING)
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#define permissive_error_kind(DC) ((DC)->permissive ? DK_WARNING : DK_ERROR)
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#define permissive_error_option(DC) ((DC)->opt_permissive)
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/* Prototypes. */
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static bool diagnostic_impl (rich_location *, int, const char *,
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va_list *, diagnostic_t) ATTRIBUTE_GCC_DIAG(3,0);
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static bool diagnostic_n_impl (location_t, int, int, const char *,
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const char *, va_list *,
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diagnostic_t) ATTRIBUTE_GCC_DIAG(5,0);
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static bool diagnostic_n_impl_richloc (rich_location *, int, int, const char *,
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const char *, va_list *,
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diagnostic_t) ATTRIBUTE_GCC_DIAG(5,0);
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static void error_recursion (diagnostic_context *) ATTRIBUTE_NORETURN;
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static void real_abort (void) ATTRIBUTE_NORETURN;
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/* Name of program invoked, sans directories. */
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const char *progname;
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/* A diagnostic_context surrogate for stderr. */
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static diagnostic_context global_diagnostic_context;
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diagnostic_context *global_dc = &global_diagnostic_context;
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/* Return a malloc'd string containing MSG formatted a la printf. The
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caller is responsible for freeing the memory. */
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char *
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build_message_string (const char *msg, ...)
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{
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char *str;
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va_list ap;
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va_start (ap, msg);
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str = xvasprintf (msg, ap);
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va_end (ap);
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return str;
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}
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/* Same as diagnostic_build_prefix, but only the source FILE is given. */
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char *
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file_name_as_prefix (diagnostic_context *context, const char *f)
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{
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const char *locus_cs
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= colorize_start (pp_show_color (context->printer), "locus");
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const char *locus_ce = colorize_stop (pp_show_color (context->printer));
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return build_message_string ("%s%s:%s ", locus_cs, f, locus_ce);
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}
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/* Return the value of the getenv("COLUMNS") as an integer. If the
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value is not set to a positive integer, use ioctl to get the
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terminal width. If it fails, return INT_MAX. */
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int
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get_terminal_width (void)
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{
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const char * s = getenv ("COLUMNS");
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if (s != NULL) {
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int n = atoi (s);
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if (n > 0)
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return n;
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}
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#ifdef TIOCGWINSZ
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struct winsize w;
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w.ws_col = 0;
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if (ioctl (0, TIOCGWINSZ, &w) == 0 && w.ws_col > 0)
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return w.ws_col;
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#endif
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return INT_MAX;
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}
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/* Set caret_max_width to value. */
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void
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diagnostic_set_caret_max_width (diagnostic_context *context, int value)
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{
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/* One minus to account for the leading empty space. */
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value = value ? value - 1
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: (isatty (fileno (pp_buffer (context->printer)->stream))
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? get_terminal_width () - 1: INT_MAX);
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if (value <= 0)
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value = INT_MAX;
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context->caret_max_width = value;
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}
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/* Initialize the diagnostic message outputting machinery. */
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void
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diagnostic_initialize (diagnostic_context *context, int n_opts)
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{
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int i;
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/* Allocate a basic pretty-printer. Clients will replace this a
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much more elaborated pretty-printer if they wish. */
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context->printer = XNEW (pretty_printer);
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new (context->printer) pretty_printer ();
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memset (context->diagnostic_count, 0, sizeof context->diagnostic_count);
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context->warning_as_error_requested = false;
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context->n_opts = n_opts;
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context->classify_diagnostic = XNEWVEC (diagnostic_t, n_opts);
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for (i = 0; i < n_opts; i++)
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context->classify_diagnostic[i] = DK_UNSPECIFIED;
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context->show_caret = false;
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diagnostic_set_caret_max_width (context, pp_line_cutoff (context->printer));
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for (i = 0; i < rich_location::STATICALLY_ALLOCATED_RANGES; i++)
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context->caret_chars[i] = '^';
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context->show_option_requested = false;
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context->abort_on_error = false;
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context->show_column = false;
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context->pedantic_errors = false;
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context->permissive = false;
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context->opt_permissive = 0;
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context->fatal_errors = false;
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context->dc_inhibit_warnings = false;
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context->dc_warn_system_headers = false;
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context->max_errors = 0;
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context->internal_error = NULL;
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diagnostic_starter (context) = default_diagnostic_starter;
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context->start_span = default_diagnostic_start_span_fn;
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diagnostic_finalizer (context) = default_diagnostic_finalizer;
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context->option_enabled = NULL;
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context->option_state = NULL;
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context->option_name = NULL;
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context->last_location = UNKNOWN_LOCATION;
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context->last_module = 0;
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context->x_data = NULL;
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context->lock = 0;
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context->inhibit_notes_p = false;
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context->colorize_source_p = false;
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context->show_ruler_p = false;
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context->parseable_fixits_p = false;
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context->edit_context_ptr = NULL;
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}
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/* Maybe initialize the color support. We require clients to do this
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explicitly, since most clients don't want color. When called
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without a VALUE, it initializes with DIAGNOSTICS_COLOR_DEFAULT. */
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void
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diagnostic_color_init (diagnostic_context *context, int value /*= -1 */)
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{
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/* value == -1 is the default value. */
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if (value < 0)
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{
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/* If DIAGNOSTICS_COLOR_DEFAULT is -1, default to
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-fdiagnostics-color=auto if GCC_COLORS is in the environment,
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otherwise default to -fdiagnostics-color=never, for other
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values default to that
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-fdiagnostics-color={never,auto,always}. */
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if (DIAGNOSTICS_COLOR_DEFAULT == -1)
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{
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if (!getenv ("GCC_COLORS"))
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return;
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value = DIAGNOSTICS_COLOR_AUTO;
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}
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else
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value = DIAGNOSTICS_COLOR_DEFAULT;
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}
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pp_show_color (context->printer)
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= colorize_init ((diagnostic_color_rule_t) value);
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}
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/* Do any cleaning up required after the last diagnostic is emitted. */
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void
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diagnostic_finish (diagnostic_context *context)
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{
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/* Some of the errors may actually have been warnings. */
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if (diagnostic_kind_count (context, DK_WERROR))
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{
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/* -Werror was given. */
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if (context->warning_as_error_requested)
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pp_verbatim (context->printer,
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_("%s: all warnings being treated as errors"),
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progname);
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/* At least one -Werror= was given. */
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else
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pp_verbatim (context->printer,
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_("%s: some warnings being treated as errors"),
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progname);
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pp_newline_and_flush (context->printer);
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}
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diagnostic_file_cache_fini ();
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XDELETEVEC (context->classify_diagnostic);
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context->classify_diagnostic = NULL;
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/* diagnostic_initialize allocates context->printer using XNEW
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and placement-new. */
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context->printer->~pretty_printer ();
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XDELETE (context->printer);
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context->printer = NULL;
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if (context->edit_context_ptr)
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{
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delete context->edit_context_ptr;
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context->edit_context_ptr = NULL;
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}
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}
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/* Initialize DIAGNOSTIC, where the message MSG has already been
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translated. */
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void
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diagnostic_set_info_translated (diagnostic_info *diagnostic, const char *msg,
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va_list *args, rich_location *richloc,
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diagnostic_t kind)
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{
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gcc_assert (richloc);
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diagnostic->message.err_no = errno;
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diagnostic->message.args_ptr = args;
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diagnostic->message.format_spec = msg;
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diagnostic->message.m_richloc = richloc;
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diagnostic->richloc = richloc;
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diagnostic->kind = kind;
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diagnostic->option_index = 0;
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}
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/* Initialize DIAGNOSTIC, where the message GMSGID has not yet been
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translated. */
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void
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diagnostic_set_info (diagnostic_info *diagnostic, const char *gmsgid,
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va_list *args, rich_location *richloc,
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diagnostic_t kind)
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{
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gcc_assert (richloc);
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diagnostic_set_info_translated (diagnostic, _(gmsgid), args, richloc, kind);
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}
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static const char *const diagnostic_kind_color[] = {
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#define DEFINE_DIAGNOSTIC_KIND(K, T, C) (C),
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#include "diagnostic.def"
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#undef DEFINE_DIAGNOSTIC_KIND
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NULL
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};
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/* Get a color name for diagnostics of type KIND
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Result could be NULL. */
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const char *
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diagnostic_get_color_for_kind (diagnostic_t kind)
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{
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return diagnostic_kind_color[kind];
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}
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/* Return a malloc'd string describing a location e.g. "foo.c:42:10".
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The caller is responsible for freeing the memory. */
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static char *
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diagnostic_get_location_text (diagnostic_context *context,
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expanded_location s)
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{
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pretty_printer *pp = context->printer;
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const char *locus_cs = colorize_start (pp_show_color (pp), "locus");
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const char *locus_ce = colorize_stop (pp_show_color (pp));
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if (s.file == NULL)
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return build_message_string ("%s%s:%s", locus_cs, progname, locus_ce);
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if (!strcmp (s.file, N_("<built-in>")))
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return build_message_string ("%s%s:%s", locus_cs, s.file, locus_ce);
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if (context->show_column)
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return build_message_string ("%s%s:%d:%d:%s", locus_cs, s.file, s.line,
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s.column, locus_ce);
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else
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return build_message_string ("%s%s:%d:%s", locus_cs, s.file, s.line,
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locus_ce);
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}
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|
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/* Return a malloc'd string describing a location and the severity of the
|
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diagnostic, e.g. "foo.c:42:10: error: ". The caller is responsible for
|
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freeing the memory. */
|
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char *
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diagnostic_build_prefix (diagnostic_context *context,
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const diagnostic_info *diagnostic)
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{
|
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static const char *const diagnostic_kind_text[] = {
|
||
#define DEFINE_DIAGNOSTIC_KIND(K, T, C) (T),
|
||
#include "diagnostic.def"
|
||
#undef DEFINE_DIAGNOSTIC_KIND
|
||
"must-not-happen"
|
||
};
|
||
gcc_assert (diagnostic->kind < DK_LAST_DIAGNOSTIC_KIND);
|
||
|
||
const char *text = _(diagnostic_kind_text[diagnostic->kind]);
|
||
const char *text_cs = "", *text_ce = "";
|
||
pretty_printer *pp = context->printer;
|
||
|
||
if (diagnostic_kind_color[diagnostic->kind])
|
||
{
|
||
text_cs = colorize_start (pp_show_color (pp),
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||
diagnostic_kind_color[diagnostic->kind]);
|
||
text_ce = colorize_stop (pp_show_color (pp));
|
||
}
|
||
|
||
expanded_location s = diagnostic_expand_location (diagnostic);
|
||
char *location_text = diagnostic_get_location_text (context, s);
|
||
|
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char *result = build_message_string ("%s %s%s%s", location_text,
|
||
text_cs, text, text_ce);
|
||
free (location_text);
|
||
return result;
|
||
}
|
||
|
||
/* 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
|
||
is written out. This function does not always return. */
|
||
void
|
||
diagnostic_action_after_output (diagnostic_context *context,
|
||
diagnostic_t diag_kind)
|
||
{
|
||
switch (diag_kind)
|
||
{
|
||
case DK_DEBUG:
|
||
case DK_NOTE:
|
||
case DK_ANACHRONISM:
|
||
case DK_WARNING:
|
||
break;
|
||
|
||
case DK_ERROR:
|
||
case DK_SORRY:
|
||
if (context->abort_on_error)
|
||
real_abort ();
|
||
if (context->fatal_errors)
|
||
{
|
||
fnotice (stderr, "compilation terminated due to -Wfatal-errors.\n");
|
||
diagnostic_finish (context);
|
||
exit (FATAL_EXIT_CODE);
|
||
}
|
||
if (context->max_errors != 0
|
||
&& ((unsigned) (diagnostic_kind_count (context, DK_ERROR)
|
||
+ diagnostic_kind_count (context, DK_SORRY)
|
||
+ diagnostic_kind_count (context, DK_WERROR))
|
||
>= context->max_errors))
|
||
{
|
||
fnotice (stderr,
|
||
"compilation terminated due to -fmax-errors=%u.\n",
|
||
context->max_errors);
|
||
diagnostic_finish (context);
|
||
exit (FATAL_EXIT_CODE);
|
||
}
|
||
break;
|
||
|
||
case DK_ICE:
|
||
case DK_ICE_NOBT:
|
||
{
|
||
struct backtrace_state *state = NULL;
|
||
if (diag_kind == DK_ICE)
|
||
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);
|
||
|
||
exit (ICE_EXIT_CODE);
|
||
}
|
||
|
||
case DK_FATAL:
|
||
if (context->abort_on_error)
|
||
real_abort ();
|
||
diagnostic_finish (context);
|
||
fnotice (stderr, "compilation terminated.\n");
|
||
exit (FATAL_EXIT_CODE);
|
||
|
||
default:
|
||
gcc_unreachable ();
|
||
}
|
||
}
|
||
|
||
void
|
||
diagnostic_report_current_module (diagnostic_context *context, location_t where)
|
||
{
|
||
const line_map_ordinary *map = NULL;
|
||
|
||
if (pp_needs_newline (context->printer))
|
||
{
|
||
pp_newline (context->printer);
|
||
pp_needs_newline (context->printer) = false;
|
||
}
|
||
|
||
if (where <= BUILTINS_LOCATION)
|
||
return;
|
||
|
||
linemap_resolve_location (line_table, where,
|
||
LRK_MACRO_DEFINITION_LOCATION,
|
||
&map);
|
||
|
||
if (map && diagnostic_last_module_changed (context, map))
|
||
{
|
||
diagnostic_set_last_module (context, map);
|
||
if (! MAIN_FILE_P (map))
|
||
{
|
||
map = INCLUDED_FROM (line_table, map);
|
||
if (context->show_column)
|
||
pp_verbatim (context->printer,
|
||
"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 %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 %r%s:%d%R", "locus",
|
||
LINEMAP_FILE (map), LAST_SOURCE_LINE (map));
|
||
}
|
||
pp_verbatim (context->printer, ":");
|
||
pp_newline (context->printer);
|
||
}
|
||
}
|
||
}
|
||
|
||
void
|
||
default_diagnostic_starter (diagnostic_context *context,
|
||
diagnostic_info *diagnostic)
|
||
{
|
||
diagnostic_report_current_module (context, diagnostic_location (diagnostic));
|
||
pp_set_prefix (context->printer, diagnostic_build_prefix (context,
|
||
diagnostic));
|
||
}
|
||
|
||
void
|
||
default_diagnostic_start_span_fn (diagnostic_context *context,
|
||
expanded_location exploc)
|
||
{
|
||
pp_set_prefix (context->printer,
|
||
diagnostic_get_location_text (context, exploc));
|
||
pp_string (context->printer, "");
|
||
pp_newline (context->printer);
|
||
}
|
||
|
||
void
|
||
default_diagnostic_finalizer (diagnostic_context *context,
|
||
diagnostic_info *diagnostic)
|
||
{
|
||
diagnostic_show_locus (context, diagnostic->richloc, diagnostic->kind);
|
||
pp_destroy_prefix (context->printer);
|
||
pp_flush (context->printer);
|
||
}
|
||
|
||
/* Interface to specify diagnostic kind overrides. Returns the
|
||
previous setting, or DK_UNSPECIFIED if the parameters are out of
|
||
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 new_kind,
|
||
location_t where)
|
||
{
|
||
diagnostic_t old_kind;
|
||
|
||
if (option_index < 0
|
||
|| option_index >= context->n_opts
|
||
|| new_kind >= DK_LAST_DIAGNOSTIC_KIND)
|
||
return DK_UNSPECIFIED;
|
||
|
||
old_kind = context->classify_diagnostic[option_index];
|
||
|
||
/* Handle pragmas separately, since we need to keep track of *where*
|
||
the pragmas were. */
|
||
if (where != UNKNOWN_LOCATION)
|
||
{
|
||
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_IGNORED : (context->warning_as_error_requested
|
||
? DK_ERROR : DK_WARNING);
|
||
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)
|
||
{
|
||
old_kind = context->classification_history[i].kind;
|
||
break;
|
||
}
|
||
|
||
i = context->n_classification_history;
|
||
context->classification_history =
|
||
(diagnostic_classification_change_t *) xrealloc (context->classification_history, (i + 1)
|
||
* sizeof (diagnostic_classification_change_t));
|
||
context->classification_history[i].location = where;
|
||
context->classification_history[i].option = option_index;
|
||
context->classification_history[i].kind = new_kind;
|
||
context->n_classification_history ++;
|
||
}
|
||
else
|
||
context->classify_diagnostic[option_index] = new_kind;
|
||
|
||
return old_kind;
|
||
}
|
||
|
||
/* Save all diagnostic classifications in a stack. */
|
||
void
|
||
diagnostic_push_diagnostics (diagnostic_context *context, location_t where ATTRIBUTE_UNUSED)
|
||
{
|
||
context->push_list = (int *) xrealloc (context->push_list, (context->n_push + 1) * sizeof (int));
|
||
context->push_list[context->n_push ++] = context->n_classification_history;
|
||
}
|
||
|
||
/* Restore the topmost classification set off the stack. If the stack
|
||
is empty, revert to the state based on command line parameters. */
|
||
void
|
||
diagnostic_pop_diagnostics (diagnostic_context *context, location_t where)
|
||
{
|
||
int jump_to;
|
||
int i;
|
||
|
||
if (context->n_push)
|
||
jump_to = context->push_list [-- context->n_push];
|
||
else
|
||
jump_to = 0;
|
||
|
||
i = context->n_classification_history;
|
||
context->classification_history =
|
||
(diagnostic_classification_change_t *) xrealloc (context->classification_history, (i + 1)
|
||
* sizeof (diagnostic_classification_change_t));
|
||
context->classification_history[i].location = where;
|
||
context->classification_history[i].option = jump_to;
|
||
context->classification_history[i].kind = DK_POP;
|
||
context->n_classification_history ++;
|
||
}
|
||
|
||
/* Helper function for print_parseable_fixits. Print TEXT to PP, obeying the
|
||
escaping rules for -fdiagnostics-parseable-fixits. */
|
||
|
||
static void
|
||
print_escaped_string (pretty_printer *pp, const char *text)
|
||
{
|
||
gcc_assert (pp);
|
||
gcc_assert (text);
|
||
|
||
pp_character (pp, '"');
|
||
for (const char *ch = text; *ch; ch++)
|
||
{
|
||
switch (*ch)
|
||
{
|
||
case '\\':
|
||
/* Escape backslash as two backslashes. */
|
||
pp_string (pp, "\\\\");
|
||
break;
|
||
case '\t':
|
||
/* Escape tab as "\t". */
|
||
pp_string (pp, "\\t");
|
||
break;
|
||
case '\n':
|
||
/* Escape newline as "\n". */
|
||
pp_string (pp, "\\n");
|
||
break;
|
||
case '"':
|
||
/* Escape doublequotes as \". */
|
||
pp_string (pp, "\\\"");
|
||
break;
|
||
default:
|
||
if (ISPRINT (*ch))
|
||
pp_character (pp, *ch);
|
||
else
|
||
/* Use octal for non-printable chars. */
|
||
{
|
||
unsigned char c = (*ch & 0xff);
|
||
pp_printf (pp, "\\%o%o%o", (c / 64), (c / 8) & 007, c & 007);
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
pp_character (pp, '"');
|
||
}
|
||
|
||
/* Implementation of -fdiagnostics-parseable-fixits. Print a
|
||
machine-parseable version of all fixits in RICHLOC to PP. */
|
||
|
||
static void
|
||
print_parseable_fixits (pretty_printer *pp, rich_location *richloc)
|
||
{
|
||
gcc_assert (pp);
|
||
gcc_assert (richloc);
|
||
|
||
for (unsigned i = 0; i < richloc->get_num_fixit_hints (); i++)
|
||
{
|
||
const fixit_hint *hint = richloc->get_fixit_hint (i);
|
||
source_location start_loc = hint->get_start_loc ();
|
||
expanded_location start_exploc = expand_location (start_loc);
|
||
pp_string (pp, "fix-it:");
|
||
print_escaped_string (pp, start_exploc.file);
|
||
source_location end_loc;
|
||
|
||
/* For compatibility with clang, print as a half-open range. */
|
||
if (hint->maybe_get_end_loc (&end_loc))
|
||
{
|
||
expanded_location end_exploc = expand_location (end_loc);
|
||
pp_printf (pp, ":{%i:%i-%i:%i}:",
|
||
start_exploc.line, start_exploc.column,
|
||
end_exploc.line, end_exploc.column + 1);
|
||
}
|
||
else
|
||
{
|
||
pp_printf (pp, ":{%i:%i-%i:%i}:",
|
||
start_exploc.line, start_exploc.column,
|
||
start_exploc.line, start_exploc.column);
|
||
}
|
||
switch (hint->get_kind ())
|
||
{
|
||
case fixit_hint::INSERT:
|
||
{
|
||
const fixit_insert *insert
|
||
= static_cast <const fixit_insert *> (hint);
|
||
print_escaped_string (pp, insert->get_string ());
|
||
}
|
||
break;
|
||
|
||
case fixit_hint::REPLACE:
|
||
{
|
||
const fixit_replace *replace
|
||
= static_cast <const fixit_replace *> (hint);
|
||
print_escaped_string (pp, replace->get_string ());
|
||
}
|
||
break;
|
||
|
||
default:
|
||
gcc_unreachable ();
|
||
}
|
||
pp_newline (pp);
|
||
}
|
||
}
|
||
|
||
/* Report a diagnostic message (an error or a warning) as specified by
|
||
DC. This function is *the* subroutine in terms of which front-ends
|
||
should implement their specific diagnostic handling modules. The
|
||
front-end independent format specifiers are exactly those described
|
||
in the documentation of output_format.
|
||
Return true if a diagnostic was printed, false otherwise. */
|
||
|
||
bool
|
||
diagnostic_report_diagnostic (diagnostic_context *context,
|
||
diagnostic_info *diagnostic)
|
||
{
|
||
location_t location = diagnostic_location (diagnostic);
|
||
diagnostic_t orig_diag_kind = diagnostic->kind;
|
||
const char *saved_format_spec;
|
||
|
||
/* Give preference to being able to inhibit warnings, before they
|
||
get reclassified to something else. */
|
||
if ((diagnostic->kind == DK_WARNING || diagnostic->kind == DK_PEDWARN)
|
||
&& !diagnostic_report_warnings_p (context, location))
|
||
return false;
|
||
|
||
if (diagnostic->kind == DK_PEDWARN)
|
||
{
|
||
diagnostic->kind = pedantic_warning_kind (context);
|
||
/* We do this to avoid giving the message for -pedantic-errors. */
|
||
orig_diag_kind = diagnostic->kind;
|
||
}
|
||
|
||
if (diagnostic->kind == DK_NOTE && context->inhibit_notes_p)
|
||
return false;
|
||
|
||
if (context->lock > 0)
|
||
{
|
||
/* If we're reporting an ICE in the middle of some other error,
|
||
try to flush out the previous error, then let this one
|
||
through. Don't do this more than once. */
|
||
if ((diagnostic->kind == DK_ICE || diagnostic->kind == DK_ICE_NOBT)
|
||
&& context->lock == 1)
|
||
pp_newline_and_flush (context->printer);
|
||
else
|
||
error_recursion (context);
|
||
}
|
||
|
||
/* If the user requested that warnings be treated as errors, so be
|
||
it. Note that we do this before the next block so that
|
||
individual warnings can be overridden back to warnings with
|
||
-Wno-error=*. */
|
||
if (context->warning_as_error_requested
|
||
&& diagnostic->kind == DK_WARNING)
|
||
{
|
||
diagnostic->kind = DK_ERROR;
|
||
}
|
||
|
||
if (diagnostic->option_index
|
||
&& diagnostic->option_index != permissive_error_option (context))
|
||
{
|
||
diagnostic_t diag_class = DK_UNSPECIFIED;
|
||
|
||
/* This tests if the user provided the appropriate -Wfoo or
|
||
-Wno-foo option. */
|
||
if (! context->option_enabled (diagnostic->option_index,
|
||
context->option_state))
|
||
return false;
|
||
|
||
/* This tests for #pragma diagnostic changes. */
|
||
if (context->n_classification_history > 0)
|
||
{
|
||
/* FIXME: Stupid search. Optimize later. */
|
||
for (int i = context->n_classification_history - 1; i >= 0; i --)
|
||
{
|
||
if (linemap_location_before_p
|
||
(line_table,
|
||
context->classification_history[i].location,
|
||
location))
|
||
{
|
||
if (context->classification_history[i].kind == (int) DK_POP)
|
||
{
|
||
i = context->classification_history[i].option;
|
||
continue;
|
||
}
|
||
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->kind = diag_class;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/* This tests if the user provided the appropriate -Werror=foo
|
||
option. */
|
||
if (diag_class == DK_UNSPECIFIED
|
||
&& (context->classify_diagnostic[diagnostic->option_index]
|
||
!= DK_UNSPECIFIED))
|
||
diagnostic->kind
|
||
= context->classify_diagnostic[diagnostic->option_index];
|
||
|
||
/* This allows for future extensions, like temporarily disabling
|
||
warnings for ranges of source code. */
|
||
if (diagnostic->kind == DK_IGNORED)
|
||
return false;
|
||
}
|
||
|
||
context->lock++;
|
||
|
||
if (diagnostic->kind == DK_ICE || diagnostic->kind == DK_ICE_NOBT)
|
||
{
|
||
/* When not checking, ICEs are converted to fatal errors when an
|
||
error has already occurred. This is counteracted by
|
||
abort_on_error. */
|
||
if (!CHECKING_P
|
||
&& (diagnostic_kind_count (context, DK_ERROR) > 0
|
||
|| diagnostic_kind_count (context, DK_SORRY) > 0)
|
||
&& !context->abort_on_error)
|
||
{
|
||
expanded_location s
|
||
= expand_location (diagnostic_location (diagnostic));
|
||
fnotice (stderr, "%s:%d: confused by earlier errors, bailing out\n",
|
||
s.file, s.line);
|
||
exit (ICE_EXIT_CODE);
|
||
}
|
||
if (context->internal_error)
|
||
(*context->internal_error) (context,
|
||
diagnostic->message.format_spec,
|
||
diagnostic->message.args_ptr);
|
||
}
|
||
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)
|
||
{
|
||
char *option_text;
|
||
|
||
option_text = context->option_name (context, diagnostic->option_index,
|
||
orig_diag_kind, diagnostic->kind);
|
||
|
||
if (option_text)
|
||
{
|
||
const char *cs
|
||
= colorize_start (pp_show_color (context->printer),
|
||
diagnostic_kind_color[diagnostic->kind]);
|
||
const char *ce = colorize_stop (pp_show_color (context->printer));
|
||
diagnostic->message.format_spec
|
||
= ACONCAT ((diagnostic->message.format_spec,
|
||
" ",
|
||
"[", cs, option_text, ce, "]",
|
||
NULL));
|
||
free (option_text);
|
||
}
|
||
}
|
||
diagnostic->message.x_data = &diagnostic->x_data;
|
||
diagnostic->x_data = NULL;
|
||
pp_format (context->printer, &diagnostic->message);
|
||
(*diagnostic_starter (context)) (context, diagnostic);
|
||
pp_output_formatted_text (context->printer);
|
||
(*diagnostic_finalizer (context)) (context, diagnostic);
|
||
if (context->parseable_fixits_p)
|
||
{
|
||
print_parseable_fixits (context->printer, diagnostic->richloc);
|
||
pp_flush (context->printer);
|
||
}
|
||
diagnostic_action_after_output (context, diagnostic->kind);
|
||
diagnostic->message.format_spec = saved_format_spec;
|
||
diagnostic->x_data = NULL;
|
||
|
||
if (context->edit_context_ptr)
|
||
context->edit_context_ptr->add_fixits (diagnostic->richloc);
|
||
|
||
context->lock--;
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Given a partial pathname as input, return another pathname that
|
||
shares no directory elements with the pathname of __FILE__. This
|
||
is used by fancy_abort() to print `Internal compiler error in expr.c'
|
||
instead of `Internal compiler error in ../../GCC/gcc/expr.c'. */
|
||
|
||
const char *
|
||
trim_filename (const char *name)
|
||
{
|
||
static const char this_file[] = __FILE__;
|
||
const char *p = name, *q = this_file;
|
||
|
||
/* First skip any "../" in each filename. This allows us to give a proper
|
||
reference to a file in a subdirectory. */
|
||
while (p[0] == '.' && p[1] == '.' && IS_DIR_SEPARATOR (p[2]))
|
||
p += 3;
|
||
|
||
while (q[0] == '.' && q[1] == '.' && IS_DIR_SEPARATOR (q[2]))
|
||
q += 3;
|
||
|
||
/* Now skip any parts the two filenames have in common. */
|
||
while (*p == *q && *p != 0 && *q != 0)
|
||
p++, q++;
|
||
|
||
/* Now go backwards until the previous directory separator. */
|
||
while (p > name && !IS_DIR_SEPARATOR (p[-1]))
|
||
p--;
|
||
|
||
return p;
|
||
}
|
||
|
||
/* Standard error reporting routines in increasing order of severity.
|
||
All of these take arguments like printf. */
|
||
|
||
/* Text to be emitted verbatim to the error message stream; this
|
||
produces no prefix and disables line-wrapping. Use rarely. */
|
||
void
|
||
verbatim (const char *gmsgid, ...)
|
||
{
|
||
text_info text;
|
||
va_list ap;
|
||
|
||
va_start (ap, gmsgid);
|
||
text.err_no = errno;
|
||
text.args_ptr = ≈
|
||
text.format_spec = _(gmsgid);
|
||
text.x_data = NULL;
|
||
pp_format_verbatim (global_dc->printer, &text);
|
||
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;
|
||
rich_location richloc (line_table, location);
|
||
|
||
va_start (ap, gmsgid);
|
||
diagnostic_set_info (&diagnostic, gmsgid, &ap, &richloc, 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_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, &richloc, DK_NOTE);
|
||
va_end (ap);
|
||
}
|
||
|
||
/* Implement emit_diagnostic, inform, inform_at_rich_loc, warning, warning_at,
|
||
warning_at_rich_loc, pedwarn, permerror, permerror_at_rich_loc, error,
|
||
error_at, error_at_rich_loc, sorry, fatal_error, internal_error, and
|
||
internal_error_no_backtrace, as documented and defined below. */
|
||
static bool
|
||
diagnostic_impl (rich_location *richloc, int opt,
|
||
const char *gmsgid,
|
||
va_list *ap, diagnostic_t kind)
|
||
{
|
||
diagnostic_info diagnostic;
|
||
if (kind == DK_PERMERROR)
|
||
{
|
||
diagnostic_set_info (&diagnostic, gmsgid, ap, richloc,
|
||
permissive_error_kind (global_dc));
|
||
diagnostic.option_index = permissive_error_option (global_dc);
|
||
}
|
||
else
|
||
{
|
||
diagnostic_set_info (&diagnostic, gmsgid, ap, richloc, kind);
|
||
if (kind == DK_WARNING || kind == DK_PEDWARN)
|
||
diagnostic.option_index = opt;
|
||
}
|
||
return report_diagnostic (&diagnostic);
|
||
}
|
||
|
||
/* Same as diagonostic_n_impl taking rich_location instead of location_t. */
|
||
static bool
|
||
diagnostic_n_impl_richloc (rich_location *richloc, int opt, int n,
|
||
const char *singular_gmsgid,
|
||
const char *plural_gmsgid,
|
||
va_list *ap, diagnostic_t kind)
|
||
{
|
||
diagnostic_info diagnostic;
|
||
diagnostic_set_info_translated (&diagnostic,
|
||
ngettext (singular_gmsgid, plural_gmsgid, n),
|
||
ap, richloc, kind);
|
||
if (kind == DK_WARNING)
|
||
diagnostic.option_index = opt;
|
||
return report_diagnostic (&diagnostic);
|
||
}
|
||
|
||
/* Implement inform_n, warning_n, and error_n, as documented and
|
||
defined below. */
|
||
static bool
|
||
diagnostic_n_impl (location_t location, int opt, int n,
|
||
const char *singular_gmsgid,
|
||
const char *plural_gmsgid,
|
||
va_list *ap, diagnostic_t kind)
|
||
{
|
||
rich_location richloc (line_table, location);
|
||
return diagnostic_n_impl_richloc (&richloc, opt, n,
|
||
singular_gmsgid, plural_gmsgid, ap, kind);
|
||
}
|
||
|
||
bool
|
||
emit_diagnostic (diagnostic_t kind, location_t location, int opt,
|
||
const char *gmsgid, ...)
|
||
{
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
rich_location richloc (line_table, location);
|
||
bool ret = diagnostic_impl (&richloc, opt, gmsgid, &ap, kind);
|
||
va_end (ap);
|
||
return ret;
|
||
}
|
||
|
||
/* An informative note at LOCATION. Use this for additional details on an error
|
||
message. */
|
||
void
|
||
inform (location_t location, const char *gmsgid, ...)
|
||
{
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
rich_location richloc (line_table, location);
|
||
diagnostic_impl (&richloc, -1, gmsgid, &ap, DK_NOTE);
|
||
va_end (ap);
|
||
}
|
||
|
||
/* Same as "inform", but at RICHLOC. */
|
||
void
|
||
inform_at_rich_loc (rich_location *richloc, const char *gmsgid, ...)
|
||
{
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
diagnostic_impl (richloc, -1, gmsgid, &ap, DK_NOTE);
|
||
va_end (ap);
|
||
}
|
||
|
||
/* An informative note at LOCATION. Use this for additional details on an
|
||
error message. */
|
||
void
|
||
inform_n (location_t location, int n, const char *singular_gmsgid,
|
||
const char *plural_gmsgid, ...)
|
||
{
|
||
va_list ap;
|
||
va_start (ap, plural_gmsgid);
|
||
diagnostic_n_impl (location, -1, n, singular_gmsgid, plural_gmsgid,
|
||
&ap, DK_NOTE);
|
||
va_end (ap);
|
||
}
|
||
|
||
/* A warning at INPUT_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 (int opt, const char *gmsgid, ...)
|
||
{
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
rich_location richloc (line_table, input_location);
|
||
bool ret = diagnostic_impl (&richloc, opt, gmsgid, &ap, DK_WARNING);
|
||
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_at (location_t location, int opt, const char *gmsgid, ...)
|
||
{
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
rich_location richloc (line_table, location);
|
||
bool ret = diagnostic_impl (&richloc, opt, gmsgid, &ap, DK_WARNING);
|
||
va_end (ap);
|
||
return ret;
|
||
}
|
||
|
||
/* Same as warning at, but using RICHLOC. */
|
||
|
||
bool
|
||
warning_at_rich_loc (rich_location *richloc, int opt, const char *gmsgid, ...)
|
||
{
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
bool ret = diagnostic_impl (richloc, opt, gmsgid, &ap, DK_WARNING);
|
||
va_end (ap);
|
||
return ret;
|
||
}
|
||
|
||
/* Same as warning_at_rich_loc but for plural variant. */
|
||
|
||
bool
|
||
warning_at_rich_loc_n (rich_location *richloc, int opt, int n,
|
||
const char *singular_gmsgid, const char *plural_gmsgid, ...)
|
||
{
|
||
va_list ap;
|
||
va_start (ap, plural_gmsgid);
|
||
bool ret = diagnostic_n_impl_richloc (richloc, opt, n,
|
||
singular_gmsgid, plural_gmsgid,
|
||
&ap, DK_WARNING);
|
||
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, ...)
|
||
{
|
||
va_list ap;
|
||
va_start (ap, plural_gmsgid);
|
||
bool ret = diagnostic_n_impl (location, opt, n,
|
||
singular_gmsgid, plural_gmsgid,
|
||
&ap, DK_WARNING);
|
||
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 -Wpedantic command-line switch. To get a warning enabled
|
||
only with that switch, use either "if (pedantic) pedwarn
|
||
(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. */
|
||
|
||
bool
|
||
pedwarn (location_t location, int opt, const char *gmsgid, ...)
|
||
{
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
rich_location richloc (line_table, location);
|
||
bool ret = diagnostic_impl (&richloc, opt, gmsgid, &ap, DK_PEDWARN);
|
||
va_end (ap);
|
||
return ret;
|
||
}
|
||
|
||
/* Same as pedwarn, but using RICHLOC. */
|
||
|
||
bool
|
||
pedwarn_at_rich_loc (rich_location *richloc, int opt, const char *gmsgid, ...)
|
||
{
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
bool ret = diagnostic_impl (richloc, opt, gmsgid, &ap, DK_PEDWARN);
|
||
va_end (ap);
|
||
return ret;
|
||
}
|
||
|
||
/* A "permissive" error at LOCATION: issues an error unless
|
||
-fpermissive was given on the command line, in which case it issues
|
||
a warning. Use this for things that really should be errors but we
|
||
want to support legacy code.
|
||
|
||
Returns true if the warning was printed, false if it was inhibited. */
|
||
|
||
bool
|
||
permerror (location_t location, const char *gmsgid, ...)
|
||
{
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
rich_location richloc (line_table, location);
|
||
bool ret = diagnostic_impl (&richloc, -1, gmsgid, &ap, DK_PERMERROR);
|
||
va_end (ap);
|
||
return ret;
|
||
}
|
||
|
||
/* Same as "permerror", but at RICHLOC. */
|
||
|
||
bool
|
||
permerror_at_rich_loc (rich_location *richloc, const char *gmsgid, ...)
|
||
{
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
bool ret = diagnostic_impl (richloc, -1, gmsgid, &ap, DK_PERMERROR);
|
||
va_end (ap);
|
||
return ret;
|
||
}
|
||
|
||
/* A hard error: the code is definitely ill-formed, and an object file
|
||
will not be produced. */
|
||
void
|
||
error (const char *gmsgid, ...)
|
||
{
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
rich_location richloc (line_table, input_location);
|
||
diagnostic_impl (&richloc, -1, gmsgid, &ap, DK_ERROR);
|
||
va_end (ap);
|
||
}
|
||
|
||
/* A hard error: the code is definitely ill-formed, and an object file
|
||
will not be produced. */
|
||
void
|
||
error_n (location_t location, int n, const char *singular_gmsgid,
|
||
const char *plural_gmsgid, ...)
|
||
{
|
||
va_list ap;
|
||
va_start (ap, plural_gmsgid);
|
||
diagnostic_n_impl (location, -1, n, singular_gmsgid, plural_gmsgid,
|
||
&ap, DK_ERROR);
|
||
va_end (ap);
|
||
}
|
||
|
||
/* Same as above, but use location LOC instead of input_location. */
|
||
void
|
||
error_at (location_t loc, const char *gmsgid, ...)
|
||
{
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
rich_location richloc (line_table, loc);
|
||
diagnostic_impl (&richloc, -1, gmsgid, &ap, DK_ERROR);
|
||
va_end (ap);
|
||
}
|
||
|
||
/* Same as above, but use RICH_LOC. */
|
||
|
||
void
|
||
error_at_rich_loc (rich_location *richloc, const char *gmsgid, ...)
|
||
{
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
diagnostic_impl (richloc, -1, gmsgid, &ap, DK_ERROR);
|
||
va_end (ap);
|
||
}
|
||
|
||
/* "Sorry, not implemented." Use for a language feature which is
|
||
required by the relevant specification but not implemented by GCC.
|
||
An object file will not be produced. */
|
||
void
|
||
sorry (const char *gmsgid, ...)
|
||
{
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
rich_location richloc (line_table, input_location);
|
||
diagnostic_impl (&richloc, -1, gmsgid, &ap, DK_SORRY);
|
||
va_end (ap);
|
||
}
|
||
|
||
/* Return true if an error or a "sorry" has been seen. Various
|
||
processing is disabled after errors. */
|
||
bool
|
||
seen_error (void)
|
||
{
|
||
return errorcount || sorrycount;
|
||
}
|
||
|
||
/* 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, ...)
|
||
{
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
rich_location richloc (line_table, loc);
|
||
diagnostic_impl (&richloc, -1, gmsgid, &ap, DK_FATAL);
|
||
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
|
||
abort () instead of calling this function directly. */
|
||
void
|
||
internal_error (const char *gmsgid, ...)
|
||
{
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
rich_location richloc (line_table, input_location);
|
||
diagnostic_impl (&richloc, -1, gmsgid, &ap, DK_ICE);
|
||
va_end (ap);
|
||
|
||
gcc_unreachable ();
|
||
}
|
||
|
||
/* Like internal_error, but no backtrace will be printed. Used when
|
||
the internal error does not happen at the current location, but happened
|
||
somewhere else. */
|
||
void
|
||
internal_error_no_backtrace (const char *gmsgid, ...)
|
||
{
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
rich_location richloc (line_table, input_location);
|
||
diagnostic_impl (&richloc, -1, gmsgid, &ap, DK_ICE_NOBT);
|
||
va_end (ap);
|
||
|
||
gcc_unreachable ();
|
||
}
|
||
|
||
/* Special case error functions. Most are implemented in terms of the
|
||
above, or should be. */
|
||
|
||
/* Print a diagnostic MSGID on FILE. This is just fprintf, except it
|
||
runs its second argument through gettext. */
|
||
void
|
||
fnotice (FILE *file, const char *cmsgid, ...)
|
||
{
|
||
va_list ap;
|
||
|
||
va_start (ap, cmsgid);
|
||
vfprintf (file, _(cmsgid), ap);
|
||
va_end (ap);
|
||
}
|
||
|
||
/* Inform the user that an error occurred while trying to report some
|
||
other error. This indicates catastrophic internal inconsistencies,
|
||
so give up now. But do try to flush out the previous error.
|
||
This mustn't use internal_error, that will cause infinite recursion. */
|
||
|
||
static void
|
||
error_recursion (diagnostic_context *context)
|
||
{
|
||
if (context->lock < 3)
|
||
pp_newline_and_flush (context->printer);
|
||
|
||
fnotice (stderr,
|
||
"Internal compiler error: Error reporting routines re-entered.\n");
|
||
|
||
/* Call diagnostic_action_after_output to get the "please submit a bug
|
||
report" message. */
|
||
diagnostic_action_after_output (context, DK_ICE);
|
||
|
||
/* Do not use gcc_unreachable here; that goes through internal_error
|
||
and therefore would cause infinite recursion. */
|
||
real_abort ();
|
||
}
|
||
|
||
/* Report an internal compiler error in a friendly manner. This is
|
||
the function that gets called upon use of abort() in the source
|
||
code generally, thanks to a special macro. */
|
||
|
||
void
|
||
fancy_abort (const char *file, int line, const char *function)
|
||
{
|
||
internal_error ("in %s, at %s:%d", function, trim_filename (file), line);
|
||
}
|
||
|
||
/* Really call the system 'abort'. This has to go right at the end of
|
||
this file, so that there are no functions after it that call abort
|
||
and get the system abort instead of our macro. */
|
||
#undef abort
|
||
static void
|
||
real_abort (void)
|
||
{
|
||
abort ();
|
||
}
|
||
|
||
#if CHECKING_P
|
||
|
||
namespace selftest {
|
||
|
||
/* Helper function for test_print_escaped_string. */
|
||
|
||
static void
|
||
assert_print_escaped_string (const location &loc, const char *expected_output,
|
||
const char *input)
|
||
{
|
||
pretty_printer pp;
|
||
print_escaped_string (&pp, input);
|
||
ASSERT_STREQ_AT (loc, expected_output, pp_formatted_text (&pp));
|
||
}
|
||
|
||
#define ASSERT_PRINT_ESCAPED_STRING_STREQ(EXPECTED_OUTPUT, INPUT) \
|
||
assert_print_escaped_string (SELFTEST_LOCATION, EXPECTED_OUTPUT, INPUT)
|
||
|
||
/* Tests of print_escaped_string. */
|
||
|
||
static void
|
||
test_print_escaped_string ()
|
||
{
|
||
/* Empty string. */
|
||
ASSERT_PRINT_ESCAPED_STRING_STREQ ("\"\"", "");
|
||
|
||
/* Non-empty string. */
|
||
ASSERT_PRINT_ESCAPED_STRING_STREQ ("\"hello world\"", "hello world");
|
||
|
||
/* Various things that need to be escaped: */
|
||
/* Backslash. */
|
||
ASSERT_PRINT_ESCAPED_STRING_STREQ ("\"before\\\\after\"",
|
||
"before\\after");
|
||
/* Tab. */
|
||
ASSERT_PRINT_ESCAPED_STRING_STREQ ("\"before\\tafter\"",
|
||
"before\tafter");
|
||
/* Newline. */
|
||
ASSERT_PRINT_ESCAPED_STRING_STREQ ("\"before\\nafter\"",
|
||
"before\nafter");
|
||
/* Double quote. */
|
||
ASSERT_PRINT_ESCAPED_STRING_STREQ ("\"before\\\"after\"",
|
||
"before\"after");
|
||
|
||
/* Non-printable characters: BEL: '\a': 0x07 */
|
||
ASSERT_PRINT_ESCAPED_STRING_STREQ ("\"before\\007after\"",
|
||
"before\aafter");
|
||
/* Non-printable characters: vertical tab: '\v': 0x0b */
|
||
ASSERT_PRINT_ESCAPED_STRING_STREQ ("\"before\\013after\"",
|
||
"before\vafter");
|
||
}
|
||
|
||
/* Tests of print_parseable_fixits. */
|
||
|
||
/* Verify that print_parseable_fixits emits the empty string if there
|
||
are no fixits. */
|
||
|
||
static void
|
||
test_print_parseable_fixits_none ()
|
||
{
|
||
pretty_printer pp;
|
||
rich_location richloc (line_table, UNKNOWN_LOCATION);
|
||
|
||
print_parseable_fixits (&pp, &richloc);
|
||
ASSERT_STREQ ("", pp_formatted_text (&pp));
|
||
}
|
||
|
||
/* Verify that print_parseable_fixits does the right thing if there
|
||
is an insertion fixit hint. */
|
||
|
||
static void
|
||
test_print_parseable_fixits_insert ()
|
||
{
|
||
pretty_printer pp;
|
||
rich_location richloc (line_table, UNKNOWN_LOCATION);
|
||
|
||
linemap_add (line_table, LC_ENTER, false, "test.c", 0);
|
||
linemap_line_start (line_table, 5, 100);
|
||
linemap_add (line_table, LC_LEAVE, false, NULL, 0);
|
||
location_t where = linemap_position_for_column (line_table, 10);
|
||
richloc.add_fixit_insert_before (where, "added content");
|
||
|
||
print_parseable_fixits (&pp, &richloc);
|
||
ASSERT_STREQ ("fix-it:\"test.c\":{5:10-5:10}:\"added content\"\n",
|
||
pp_formatted_text (&pp));
|
||
}
|
||
|
||
/* Verify that print_parseable_fixits does the right thing if there
|
||
is an removal fixit hint. */
|
||
|
||
static void
|
||
test_print_parseable_fixits_remove ()
|
||
{
|
||
pretty_printer pp;
|
||
rich_location richloc (line_table, UNKNOWN_LOCATION);
|
||
|
||
linemap_add (line_table, LC_ENTER, false, "test.c", 0);
|
||
linemap_line_start (line_table, 5, 100);
|
||
linemap_add (line_table, LC_LEAVE, false, NULL, 0);
|
||
source_range where;
|
||
where.m_start = linemap_position_for_column (line_table, 10);
|
||
where.m_finish = linemap_position_for_column (line_table, 20);
|
||
richloc.add_fixit_remove (where);
|
||
|
||
print_parseable_fixits (&pp, &richloc);
|
||
ASSERT_STREQ ("fix-it:\"test.c\":{5:10-5:21}:\"\"\n",
|
||
pp_formatted_text (&pp));
|
||
}
|
||
|
||
/* Verify that print_parseable_fixits does the right thing if there
|
||
is an replacement fixit hint. */
|
||
|
||
static void
|
||
test_print_parseable_fixits_replace ()
|
||
{
|
||
pretty_printer pp;
|
||
rich_location richloc (line_table, UNKNOWN_LOCATION);
|
||
|
||
linemap_add (line_table, LC_ENTER, false, "test.c", 0);
|
||
linemap_line_start (line_table, 5, 100);
|
||
linemap_add (line_table, LC_LEAVE, false, NULL, 0);
|
||
source_range where;
|
||
where.m_start = linemap_position_for_column (line_table, 10);
|
||
where.m_finish = linemap_position_for_column (line_table, 20);
|
||
richloc.add_fixit_replace (where, "replacement");
|
||
|
||
print_parseable_fixits (&pp, &richloc);
|
||
ASSERT_STREQ ("fix-it:\"test.c\":{5:10-5:21}:\"replacement\"\n",
|
||
pp_formatted_text (&pp));
|
||
}
|
||
|
||
/* Run all of the selftests within this file. */
|
||
|
||
void
|
||
diagnostic_c_tests ()
|
||
{
|
||
test_print_escaped_string ();
|
||
test_print_parseable_fixits_none ();
|
||
test_print_parseable_fixits_insert ();
|
||
test_print_parseable_fixits_remove ();
|
||
test_print_parseable_fixits_replace ();
|
||
}
|
||
|
||
} // namespace selftest
|
||
|
||
#endif /* #if CHECKING_P */
|