2495 lines
72 KiB
C++
2495 lines
72 KiB
C++
/* Language-independent diagnostic subroutines for the GNU Compiler Collection
|
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Copyright (C) 1999-2022 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 "diagnostic-url.h"
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#include "diagnostic-metadata.h"
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#include "diagnostic-path.h"
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#include "edit-context.h"
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#include "selftest.h"
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#include "selftest-diagnostic.h"
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#include "opts.h"
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#include "cpplib.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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/* Disable warnings about quoting issues in the pp_xxx calls below
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that (intentionally) don't follow GCC diagnostic conventions. */
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#if __GNUC__ >= 10
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# pragma GCC diagnostic push
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# pragma GCC diagnostic ignored "-Wformat-diag"
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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 *, const diagnostic_metadata *,
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int, const char *,
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va_list *, diagnostic_t) ATTRIBUTE_GCC_DIAG(4,0);
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static bool diagnostic_n_impl (rich_location *, const diagnostic_metadata *,
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int, unsigned HOST_WIDE_INT,
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const char *, const char *, va_list *,
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diagnostic_t) ATTRIBUTE_GCC_DIAG(6,0);
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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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/* Default implementation of final_cb. */
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static void
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default_diagnostic_final_cb (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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}
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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_cwe = false;
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context->path_format = DPF_NONE;
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context->show_path_depths = false;
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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->get_option_url = 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_labels_p = false;
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context->show_line_numbers_p = false;
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context->min_margin_width = 0;
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context->show_ruler_p = false;
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context->report_bug = false;
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if (const char *var = getenv ("GCC_EXTRA_DIAGNOSTIC_OUTPUT"))
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{
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if (!strcmp (var, "fixits-v1"))
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context->extra_output_kind = EXTRA_DIAGNOSTIC_OUTPUT_fixits_v1;
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else if (!strcmp (var, "fixits-v2"))
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context->extra_output_kind = EXTRA_DIAGNOSTIC_OUTPUT_fixits_v2;
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/* Silently ignore unrecognized values. */
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}
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context->column_unit = DIAGNOSTICS_COLUMN_UNIT_DISPLAY;
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context->column_origin = 1;
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context->tabstop = 8;
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context->escape_format = DIAGNOSTICS_ESCAPE_FORMAT_UNICODE;
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context->edit_context_ptr = NULL;
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context->diagnostic_group_nesting_depth = 0;
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context->diagnostic_group_emission_count = 0;
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context->begin_group_cb = NULL;
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context->end_group_cb = NULL;
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context->final_cb = default_diagnostic_final_cb;
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context->includes_seen = 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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/* Initialize URL support within CONTEXT based on VALUE, handling "auto". */
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void
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diagnostic_urls_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_URLS_DEFAULT is -1, default to
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-fdiagnostics-urls=auto if GCC_URLS or TERM_URLS is in the
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environment, otherwise default to -fdiagnostics-urls=never,
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for other values default to that
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-fdiagnostics-urls={never,auto,always}. */
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if (DIAGNOSTICS_URLS_DEFAULT == -1)
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{
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if (!getenv ("GCC_URLS") && !getenv ("TERM_URLS"))
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return;
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value = DIAGNOSTICS_URL_AUTO;
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}
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else
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value = DIAGNOSTICS_URLS_DEFAULT;
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}
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context->printer->url_format
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= determine_url_format ((diagnostic_url_rule_t) value);
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}
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/* Create the file_cache, if not already created, and tell it how to
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translate files on input. */
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void diagnostic_initialize_input_context (diagnostic_context *context,
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diagnostic_input_charset_callback ccb,
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bool should_skip_bom)
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{
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if (!context->m_file_cache)
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context->m_file_cache = new file_cache;
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context->m_file_cache->initialize_input_context (ccb, should_skip_bom);
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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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if (context->final_cb)
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context->final_cb (context);
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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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||
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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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if (context->includes_seen)
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||
{
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||
delete context->includes_seen;
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context->includes_seen = nullptr;
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||
}
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||
}
|
||
|
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/* Initialize DIAGNOSTIC, where the message MSG has already been
|
||
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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||
{
|
||
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->metadata = NULL;
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diagnostic->kind = kind;
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||
diagnostic->option_index = 0;
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||
}
|
||
|
||
/* Initialize DIAGNOSTIC, where the message GMSGID has not yet been
|
||
translated. */
|
||
void
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||
diagnostic_set_info (diagnostic_info *diagnostic, const char *gmsgid,
|
||
va_list *args, rich_location *richloc,
|
||
diagnostic_t kind)
|
||
{
|
||
gcc_assert (richloc);
|
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diagnostic_set_info_translated (diagnostic, _(gmsgid), args, richloc, kind);
|
||
}
|
||
|
||
static const char *const diagnostic_kind_color[] = {
|
||
#define DEFINE_DIAGNOSTIC_KIND(K, T, C) (C),
|
||
#include "diagnostic.def"
|
||
#undef DEFINE_DIAGNOSTIC_KIND
|
||
NULL
|
||
};
|
||
|
||
/* Get a color name for diagnostics of type KIND
|
||
Result could be NULL. */
|
||
|
||
const char *
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||
diagnostic_get_color_for_kind (diagnostic_t kind)
|
||
{
|
||
return diagnostic_kind_color[kind];
|
||
}
|
||
|
||
/* Given an expanded_location, convert the column (which is in 1-based bytes)
|
||
to the requested units, without converting the origin.
|
||
Return -1 if the column is invalid (<= 0). */
|
||
|
||
static int
|
||
convert_column_unit (enum diagnostics_column_unit column_unit,
|
||
int tabstop,
|
||
expanded_location s)
|
||
{
|
||
if (s.column <= 0)
|
||
return -1;
|
||
|
||
switch (column_unit)
|
||
{
|
||
default:
|
||
gcc_unreachable ();
|
||
|
||
case DIAGNOSTICS_COLUMN_UNIT_DISPLAY:
|
||
{
|
||
cpp_char_column_policy policy (tabstop, cpp_wcwidth);
|
||
return location_compute_display_column (s, policy);
|
||
}
|
||
|
||
case DIAGNOSTICS_COLUMN_UNIT_BYTE:
|
||
return s.column;
|
||
}
|
||
}
|
||
|
||
/* Given an expanded_location, convert the column (which is in 1-based bytes)
|
||
to the requested units and origin. Return -1 if the column is
|
||
invalid (<= 0). */
|
||
int
|
||
diagnostic_converted_column (diagnostic_context *context, expanded_location s)
|
||
{
|
||
int one_based_col
|
||
= convert_column_unit (context->column_unit, context->tabstop, s);
|
||
if (one_based_col <= 0)
|
||
return -1;
|
||
return one_based_col + (context->column_origin - 1);
|
||
}
|
||
|
||
/* Return a formatted line and column ':%line:%column'. Elided if
|
||
line == 0 or col < 0. (A column of 0 may be valid due to the
|
||
-fdiagnostics-column-origin option.)
|
||
The result is a statically allocated buffer. */
|
||
|
||
static const char *
|
||
maybe_line_and_column (int line, int col)
|
||
{
|
||
static char result[32];
|
||
|
||
if (line)
|
||
{
|
||
size_t l
|
||
= snprintf (result, sizeof (result),
|
||
col >= 0 ? ":%d:%d" : ":%d", line, col);
|
||
gcc_checking_assert (l < sizeof (result));
|
||
}
|
||
else
|
||
result[0] = 0;
|
||
return result;
|
||
}
|
||
|
||
/* Return a malloc'd string describing a location e.g. "foo.c:42:10".
|
||
The caller is responsible for freeing the memory. */
|
||
|
||
static char *
|
||
diagnostic_get_location_text (diagnostic_context *context,
|
||
expanded_location s)
|
||
{
|
||
pretty_printer *pp = context->printer;
|
||
const char *locus_cs = colorize_start (pp_show_color (pp), "locus");
|
||
const char *locus_ce = colorize_stop (pp_show_color (pp));
|
||
const char *file = s.file ? s.file : progname;
|
||
int line = 0;
|
||
int col = -1;
|
||
if (strcmp (file, N_("<built-in>")))
|
||
{
|
||
line = s.line;
|
||
if (context->show_column)
|
||
col = diagnostic_converted_column (context, s);
|
||
}
|
||
|
||
const char *line_col = maybe_line_and_column (line, col);
|
||
return build_message_string ("%s%s%s:%s", locus_cs, file,
|
||
line_col, locus_ce);
|
||
}
|
||
|
||
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"
|
||
};
|
||
|
||
/* Return a malloc'd string describing a location and the severity of the
|
||
diagnostic, e.g. "foo.c:42:10: error: ". The caller is responsible for
|
||
freeing the memory. */
|
||
char *
|
||
diagnostic_build_prefix (diagnostic_context *context,
|
||
const diagnostic_info *diagnostic)
|
||
{
|
||
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),
|
||
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);
|
||
|
||
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.cc. */
|
||
if (*pcount == 0
|
||
&& filename != NULL
|
||
&& strcmp (lbasename (filename), "diagnostic.cc") == 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));
|
||
}
|
||
|
||
/* Check if we've met the maximum error limit, and if so fatally exit
|
||
with a message. CONTEXT is the context to check, and FLUSH
|
||
indicates whether a diagnostic_finish call is needed. */
|
||
|
||
void
|
||
diagnostic_check_max_errors (diagnostic_context *context, bool flush)
|
||
{
|
||
if (!context->max_errors)
|
||
return;
|
||
|
||
int count = (diagnostic_kind_count (context, DK_ERROR)
|
||
+ diagnostic_kind_count (context, DK_SORRY)
|
||
+ diagnostic_kind_count (context, DK_WERROR));
|
||
|
||
if (count >= context->max_errors)
|
||
{
|
||
fnotice (stderr,
|
||
"compilation terminated due to -fmax-errors=%u.\n",
|
||
context->max_errors);
|
||
if (flush)
|
||
diagnostic_finish (context);
|
||
exit (FATAL_EXIT_CODE);
|
||
}
|
||
}
|
||
|
||
/* 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);
|
||
}
|
||
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 ();
|
||
|
||
if (context->report_bug)
|
||
fnotice (stderr, "Please submit a full bug report, "
|
||
"with preprocessed source.\n");
|
||
else
|
||
fnotice (stderr, "Please submit a full bug report, "
|
||
"with preprocessed source (by using -freport-bug).\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 ();
|
||
}
|
||
}
|
||
|
||
/* True if the last module or file in which a diagnostic was reported is
|
||
different from the current one. */
|
||
|
||
static bool
|
||
last_module_changed_p (diagnostic_context *context,
|
||
const line_map_ordinary *map)
|
||
{
|
||
return context->last_module != map;
|
||
}
|
||
|
||
/* Remember the current module or file as being the last one in which we
|
||
report a diagnostic. */
|
||
|
||
static void
|
||
set_last_module (diagnostic_context *context, const line_map_ordinary *map)
|
||
{
|
||
context->last_module = map;
|
||
}
|
||
|
||
/* Only dump the "In file included from..." stack once for each file. */
|
||
|
||
static bool
|
||
includes_seen (diagnostic_context *context, const line_map_ordinary *map)
|
||
{
|
||
/* No include path for main. */
|
||
if (MAIN_FILE_P (map))
|
||
return true;
|
||
|
||
/* Always identify C++ modules, at least for now. */
|
||
auto probe = map;
|
||
if (linemap_check_ordinary (map)->reason == LC_RENAME)
|
||
/* The module source file shows up as LC_RENAME inside LC_MODULE. */
|
||
probe = linemap_included_from_linemap (line_table, map);
|
||
if (MAP_MODULE_P (probe))
|
||
return false;
|
||
|
||
if (!context->includes_seen)
|
||
context->includes_seen = new hash_set<location_t, false, location_hash>;
|
||
|
||
/* Hash the location of the #include directive to better handle files
|
||
that are included multiple times with different macros defined. */
|
||
return context->includes_seen->add (linemap_included_from (map));
|
||
}
|
||
|
||
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 && last_module_changed_p (context, map))
|
||
{
|
||
set_last_module (context, map);
|
||
if (!includes_seen (context, map))
|
||
{
|
||
bool first = true, need_inc = true, was_module = MAP_MODULE_P (map);
|
||
expanded_location s = {};
|
||
do
|
||
{
|
||
where = linemap_included_from (map);
|
||
map = linemap_included_from_linemap (line_table, map);
|
||
bool is_module = MAP_MODULE_P (map);
|
||
s.file = LINEMAP_FILE (map);
|
||
s.line = SOURCE_LINE (map, where);
|
||
int col = -1;
|
||
if (first && context->show_column)
|
||
{
|
||
s.column = SOURCE_COLUMN (map, where);
|
||
col = diagnostic_converted_column (context, s);
|
||
}
|
||
const char *line_col = maybe_line_and_column (s.line, col);
|
||
static const char *const msgs[] =
|
||
{
|
||
NULL,
|
||
N_(" from"),
|
||
N_("In file included from"), /* 2 */
|
||
N_(" included from"),
|
||
N_("In module"), /* 4 */
|
||
N_("of module"),
|
||
N_("In module imported at"), /* 6 */
|
||
N_("imported at"),
|
||
};
|
||
|
||
unsigned index = (was_module ? 6 : is_module ? 4
|
||
: need_inc ? 2 : 0) + !first;
|
||
|
||
pp_verbatim (context->printer, "%s%s %r%s%s%R",
|
||
first ? "" : was_module ? ", " : ",\n",
|
||
_(msgs[index]),
|
||
"locus", s.file, line_col);
|
||
first = false, need_inc = was_module, was_module = is_module;
|
||
}
|
||
while (!includes_seen (context, map));
|
||
pp_verbatim (context->printer, ":");
|
||
pp_newline (context->printer);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* If DIAGNOSTIC has a diagnostic_path and CONTEXT supports printing paths,
|
||
print the path. */
|
||
|
||
void
|
||
diagnostic_show_any_path (diagnostic_context *context,
|
||
diagnostic_info *diagnostic)
|
||
{
|
||
const diagnostic_path *path = diagnostic->richloc->get_path ();
|
||
if (!path)
|
||
return;
|
||
|
||
if (context->print_path)
|
||
context->print_path (context, path);
|
||
}
|
||
|
||
/* Return true if the events in this path involve more than one
|
||
function, or false if it is purely intraprocedural. */
|
||
|
||
bool
|
||
diagnostic_path::interprocedural_p () const
|
||
{
|
||
const unsigned num = num_events ();
|
||
for (unsigned i = 0; i < num; i++)
|
||
{
|
||
if (get_event (i).get_fndecl () != get_event (0).get_fndecl ())
|
||
return true;
|
||
if (get_event (i).get_stack_depth () != get_event (0).get_stack_depth ())
|
||
return true;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
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)
|
||
{
|
||
char *text = diagnostic_get_location_text (context, exploc);
|
||
pp_string (context->printer, text);
|
||
free (text);
|
||
pp_newline (context->printer);
|
||
}
|
||
|
||
void
|
||
default_diagnostic_finalizer (diagnostic_context *context,
|
||
diagnostic_info *diagnostic,
|
||
diagnostic_t)
|
||
{
|
||
char *saved_prefix = pp_take_prefix (context->printer);
|
||
pp_set_prefix (context->printer, NULL);
|
||
pp_newline (context->printer);
|
||
diagnostic_show_locus (context, diagnostic->richloc, diagnostic->kind);
|
||
pp_set_prefix (context->printer, saved_prefix);
|
||
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->lang_mask,
|
||
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 and
|
||
GCC_EXTRA_DIAGNOSTIC_OUTPUT.
|
||
Print a machine-parseable version of all fixits in RICHLOC to PP,
|
||
using COLUMN_UNIT to express columns.
|
||
Use TABSTOP when handling DIAGNOSTICS_COLUMN_UNIT_DISPLAY. */
|
||
|
||
static void
|
||
print_parseable_fixits (pretty_printer *pp, rich_location *richloc,
|
||
enum diagnostics_column_unit column_unit,
|
||
int tabstop)
|
||
{
|
||
gcc_assert (pp);
|
||
gcc_assert (richloc);
|
||
|
||
char *saved_prefix = pp_take_prefix (pp);
|
||
pp_set_prefix (pp, NULL);
|
||
|
||
for (unsigned i = 0; i < richloc->get_num_fixit_hints (); i++)
|
||
{
|
||
const fixit_hint *hint = richloc->get_fixit_hint (i);
|
||
location_t 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);
|
||
/* For compatibility with clang, print as a half-open range. */
|
||
location_t next_loc = hint->get_next_loc ();
|
||
expanded_location next_exploc = expand_location (next_loc);
|
||
int start_col
|
||
= convert_column_unit (column_unit, tabstop, start_exploc);
|
||
int next_col
|
||
= convert_column_unit (column_unit, tabstop, next_exploc);
|
||
pp_printf (pp, ":{%i:%i-%i:%i}:",
|
||
start_exploc.line, start_col,
|
||
next_exploc.line, next_col);
|
||
print_escaped_string (pp, hint->get_string ());
|
||
pp_newline (pp);
|
||
}
|
||
|
||
pp_set_prefix (pp, saved_prefix);
|
||
}
|
||
|
||
/* Update the inlining info in CONTEXT for a DIAGNOSTIC. */
|
||
|
||
static void
|
||
get_any_inlining_info (diagnostic_context *context,
|
||
diagnostic_info *diagnostic)
|
||
{
|
||
auto &ilocs = diagnostic->m_iinfo.m_ilocs;
|
||
|
||
if (context->set_locations_cb)
|
||
/* Retrieve the locations into which the expression about to be
|
||
diagnosed has been inlined, including those of all the callers
|
||
all the way down the inlining stack. */
|
||
context->set_locations_cb (context, diagnostic);
|
||
else
|
||
{
|
||
/* When there's no callback use just the one location provided
|
||
by the caller of the diagnostic function. */
|
||
location_t loc = diagnostic_location (diagnostic);
|
||
ilocs.safe_push (loc);
|
||
diagnostic->m_iinfo.m_allsyslocs = in_system_header_at (loc);
|
||
}
|
||
}
|
||
|
||
/* Update the kind of DIAGNOSTIC based on its location(s), including
|
||
any of those in its inlining stack, relative to any
|
||
#pragma GCC diagnostic
|
||
directives recorded within CONTEXT.
|
||
|
||
Return the new kind of DIAGNOSTIC if it was updated, or DK_UNSPECIFIED
|
||
otherwise. */
|
||
|
||
static diagnostic_t
|
||
update_effective_level_from_pragmas (diagnostic_context *context,
|
||
diagnostic_info *diagnostic)
|
||
{
|
||
if (diagnostic->m_iinfo.m_allsyslocs && !context->dc_warn_system_headers)
|
||
{
|
||
/* Ignore the diagnostic if all the inlined locations are
|
||
in system headers and -Wno-system-headers is in effect. */
|
||
diagnostic->kind = DK_IGNORED;
|
||
return DK_IGNORED;
|
||
}
|
||
|
||
if (context->n_classification_history <= 0)
|
||
return DK_UNSPECIFIED;
|
||
|
||
/* Iterate over the locations, checking the diagnostic disposition
|
||
for the diagnostic at each. If it's explicitly set as opposed
|
||
to unspecified, update the disposition for this instance of
|
||
the diagnostic and return it. */
|
||
for (location_t loc: diagnostic->m_iinfo.m_ilocs)
|
||
{
|
||
/* FIXME: Stupid search. Optimize later. */
|
||
for (int i = context->n_classification_history - 1; i >= 0; i --)
|
||
{
|
||
const diagnostic_classification_change_t &hist
|
||
= context->classification_history[i];
|
||
|
||
location_t pragloc = hist.location;
|
||
if (!linemap_location_before_p (line_table, pragloc, loc))
|
||
continue;
|
||
|
||
if (hist.kind == (int) DK_POP)
|
||
{
|
||
/* Move on to the next region. */
|
||
i = hist.option;
|
||
continue;
|
||
}
|
||
|
||
int option = hist.option;
|
||
/* The option 0 is for all the diagnostics. */
|
||
if (option == 0 || option == diagnostic->option_index)
|
||
{
|
||
diagnostic_t kind = hist.kind;
|
||
if (kind != DK_UNSPECIFIED)
|
||
diagnostic->kind = kind;
|
||
return kind;
|
||
}
|
||
}
|
||
}
|
||
|
||
return DK_UNSPECIFIED;
|
||
}
|
||
|
||
/* Generate a URL string describing CWE. The caller is responsible for
|
||
freeing the string. */
|
||
|
||
static char *
|
||
get_cwe_url (int cwe)
|
||
{
|
||
return xasprintf ("https://cwe.mitre.org/data/definitions/%i.html", cwe);
|
||
}
|
||
|
||
/* If DIAGNOSTIC has a CWE identifier, print it.
|
||
|
||
For example, if the diagnostic metadata associates it with CWE-119,
|
||
" [CWE-119]" will be printed, suitably colorized, and with a URL of a
|
||
description of the security issue. */
|
||
|
||
static void
|
||
print_any_cwe (diagnostic_context *context,
|
||
const diagnostic_info *diagnostic)
|
||
{
|
||
if (diagnostic->metadata == NULL)
|
||
return;
|
||
|
||
int cwe = diagnostic->metadata->get_cwe ();
|
||
if (cwe)
|
||
{
|
||
pretty_printer *pp = context->printer;
|
||
char *saved_prefix = pp_take_prefix (context->printer);
|
||
pp_string (pp, " [");
|
||
pp_string (pp, colorize_start (pp_show_color (pp),
|
||
diagnostic_kind_color[diagnostic->kind]));
|
||
if (pp->url_format != URL_FORMAT_NONE)
|
||
{
|
||
char *cwe_url = get_cwe_url (cwe);
|
||
pp_begin_url (pp, cwe_url);
|
||
free (cwe_url);
|
||
}
|
||
pp_printf (pp, "CWE-%i", cwe);
|
||
pp_set_prefix (context->printer, saved_prefix);
|
||
if (pp->url_format != URL_FORMAT_NONE)
|
||
pp_end_url (pp);
|
||
pp_string (pp, colorize_stop (pp_show_color (pp)));
|
||
pp_character (pp, ']');
|
||
}
|
||
}
|
||
|
||
/* Print any metadata about the option used to control DIAGNOSTIC to CONTEXT's
|
||
printer, e.g. " [-Werror=uninitialized]".
|
||
Subroutine of diagnostic_report_diagnostic. */
|
||
|
||
static void
|
||
print_option_information (diagnostic_context *context,
|
||
const diagnostic_info *diagnostic,
|
||
diagnostic_t orig_diag_kind)
|
||
{
|
||
char *option_text;
|
||
|
||
option_text = context->option_name (context, diagnostic->option_index,
|
||
orig_diag_kind, diagnostic->kind);
|
||
|
||
if (option_text)
|
||
{
|
||
char *option_url = NULL;
|
||
if (context->get_option_url
|
||
&& context->printer->url_format != URL_FORMAT_NONE)
|
||
option_url = context->get_option_url (context,
|
||
diagnostic->option_index);
|
||
pretty_printer *pp = context->printer;
|
||
pp_string (pp, " [");
|
||
pp_string (pp, colorize_start (pp_show_color (pp),
|
||
diagnostic_kind_color[diagnostic->kind]));
|
||
if (option_url)
|
||
pp_begin_url (pp, option_url);
|
||
pp_string (pp, option_text);
|
||
if (option_url)
|
||
{
|
||
pp_end_url (pp);
|
||
free (option_url);
|
||
}
|
||
pp_string (pp, colorize_stop (pp_show_color (pp)));
|
||
pp_character (pp, ']');
|
||
free (option_text);
|
||
}
|
||
}
|
||
|
||
/* Returns whether a DIAGNOSTIC should be printed, and adjusts diagnostic->kind
|
||
as appropriate for #pragma GCC diagnostic and -Werror=foo. */
|
||
|
||
static bool
|
||
diagnostic_enabled (diagnostic_context *context,
|
||
diagnostic_info *diagnostic)
|
||
{
|
||
/* Update the inlining stack for this diagnostic. */
|
||
get_any_inlining_info (context, diagnostic);
|
||
|
||
/* Diagnostics with no option or -fpermissive are always enabled. */
|
||
if (!diagnostic->option_index
|
||
|| diagnostic->option_index == permissive_error_option (context))
|
||
return true;
|
||
|
||
/* This tests if the user provided the appropriate -Wfoo or
|
||
-Wno-foo option. */
|
||
if (! context->option_enabled (diagnostic->option_index,
|
||
context->lang_mask,
|
||
context->option_state))
|
||
return false;
|
||
|
||
/* This tests for #pragma diagnostic changes. */
|
||
diagnostic_t diag_class
|
||
= update_effective_level_from_pragmas (context, diagnostic);
|
||
|
||
/* 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;
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Returns whether warning OPT is enabled at LOC. */
|
||
|
||
bool
|
||
warning_enabled_at (location_t loc, int opt)
|
||
{
|
||
if (!diagnostic_report_warnings_p (global_dc, loc))
|
||
return false;
|
||
|
||
rich_location richloc (line_table, loc);
|
||
diagnostic_info diagnostic = {};
|
||
diagnostic.option_index = opt;
|
||
diagnostic.richloc = &richloc;
|
||
diagnostic.message.m_richloc = &richloc;
|
||
diagnostic.kind = DK_WARNING;
|
||
return diagnostic_enabled (global_dc, &diagnostic);
|
||
}
|
||
|
||
/* 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;
|
||
|
||
/* Give preference to being able to inhibit warnings, before they
|
||
get reclassified to something else. */
|
||
bool report_warning_p = true;
|
||
if (diagnostic->kind == DK_WARNING || diagnostic->kind == DK_PEDWARN)
|
||
{
|
||
if (context->dc_inhibit_warnings)
|
||
return false;
|
||
/* Remember the result of the overall system header warning setting
|
||
but proceed to also check the inlining context. */
|
||
report_warning_p = diagnostic_report_warnings_p (context, location);
|
||
if (!report_warning_p && diagnostic->kind == DK_PEDWARN)
|
||
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;
|
||
|
||
diagnostic->message.x_data = &diagnostic->x_data;
|
||
|
||
/* Check to see if the diagnostic is enabled at the location and
|
||
not disabled by #pragma GCC diagnostic anywhere along the inlining
|
||
stack. . */
|
||
if (!diagnostic_enabled (context, diagnostic))
|
||
return false;
|
||
|
||
if (!report_warning_p && diagnostic->m_iinfo.m_allsyslocs)
|
||
/* Bail if the warning is not to be reported because all locations
|
||
in the inlining stack (if there is one) are in system headers. */
|
||
return false;
|
||
|
||
if (diagnostic->kind != DK_NOTE && diagnostic->kind != DK_ICE)
|
||
diagnostic_check_max_errors (context);
|
||
|
||
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);
|
||
|
||
/* Is this the initial diagnostic within the stack of groups? */
|
||
if (context->diagnostic_group_emission_count == 0)
|
||
{
|
||
if (context->begin_group_cb)
|
||
context->begin_group_cb (context);
|
||
}
|
||
context->diagnostic_group_emission_count++;
|
||
|
||
pp_format (context->printer, &diagnostic->message);
|
||
(*diagnostic_starter (context)) (context, diagnostic);
|
||
pp_output_formatted_text (context->printer);
|
||
if (context->show_cwe)
|
||
print_any_cwe (context, diagnostic);
|
||
if (context->show_option_requested)
|
||
print_option_information (context, diagnostic, orig_diag_kind);
|
||
(*diagnostic_finalizer (context)) (context, diagnostic, orig_diag_kind);
|
||
switch (context->extra_output_kind)
|
||
{
|
||
default:
|
||
break;
|
||
case EXTRA_DIAGNOSTIC_OUTPUT_fixits_v1:
|
||
print_parseable_fixits (context->printer, diagnostic->richloc,
|
||
DIAGNOSTICS_COLUMN_UNIT_BYTE,
|
||
context->tabstop);
|
||
pp_flush (context->printer);
|
||
break;
|
||
case EXTRA_DIAGNOSTIC_OUTPUT_fixits_v2:
|
||
print_parseable_fixits (context->printer, diagnostic->richloc,
|
||
DIAGNOSTICS_COLUMN_UNIT_DISPLAY,
|
||
context->tabstop);
|
||
pp_flush (context->printer);
|
||
break;
|
||
}
|
||
diagnostic_action_after_output (context, diagnostic->kind);
|
||
diagnostic->x_data = NULL;
|
||
|
||
if (context->edit_context_ptr)
|
||
if (diagnostic->richloc->fixits_can_be_auto_applied_p ())
|
||
context->edit_context_ptr->add_fixits (diagnostic->richloc);
|
||
|
||
context->lock--;
|
||
|
||
diagnostic_show_any_path (context, diagnostic);
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Get the number of digits in the decimal representation of VALUE. */
|
||
|
||
int
|
||
num_digits (int value)
|
||
{
|
||
/* Perhaps simpler to use log10 for this, but doing it this way avoids
|
||
using floating point. */
|
||
gcc_assert (value >= 0);
|
||
|
||
if (value == 0)
|
||
return 1;
|
||
|
||
int digits = 0;
|
||
while (value > 0)
|
||
{
|
||
digits++;
|
||
value /= 10;
|
||
}
|
||
return digits;
|
||
}
|
||
|
||
/* 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.cc'
|
||
instead of `internal compiler error in ../../GCC/gcc/expr.cc'. */
|
||
|
||
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;
|
||
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;
|
||
}
|
||
char *saved_prefix = pp_take_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);
|
||
pp_newline (context->printer);
|
||
diagnostic_show_locus (context, &richloc, DK_NOTE);
|
||
va_end (ap);
|
||
}
|
||
|
||
/* Implement emit_diagnostic, inform, warning, warning_at, pedwarn,
|
||
permerror, error, error_at, error_at, sorry, fatal_error, internal_error,
|
||
and internal_error_no_backtrace, as documented and defined below. */
|
||
static bool
|
||
diagnostic_impl (rich_location *richloc, const diagnostic_metadata *metadata,
|
||
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;
|
||
}
|
||
diagnostic.metadata = metadata;
|
||
return diagnostic_report_diagnostic (global_dc, &diagnostic);
|
||
}
|
||
|
||
/* Implement inform_n, warning_n, and error_n, as documented and
|
||
defined below. */
|
||
static bool
|
||
diagnostic_n_impl (rich_location *richloc, const diagnostic_metadata *metadata,
|
||
int opt, unsigned HOST_WIDE_INT n,
|
||
const char *singular_gmsgid,
|
||
const char *plural_gmsgid,
|
||
va_list *ap, diagnostic_t kind)
|
||
{
|
||
diagnostic_info diagnostic;
|
||
unsigned long gtn;
|
||
|
||
if (sizeof n <= sizeof gtn)
|
||
gtn = n;
|
||
else
|
||
/* Use the largest number ngettext can handle, otherwise
|
||
preserve the six least significant decimal digits for
|
||
languages where the plural form depends on them. */
|
||
gtn = n <= ULONG_MAX ? n : n % 1000000LU + 1000000LU;
|
||
|
||
const char *text = ngettext (singular_gmsgid, plural_gmsgid, gtn);
|
||
diagnostic_set_info_translated (&diagnostic, text, ap, richloc, kind);
|
||
if (kind == DK_WARNING)
|
||
diagnostic.option_index = opt;
|
||
diagnostic.metadata = metadata;
|
||
return diagnostic_report_diagnostic (global_dc, &diagnostic);
|
||
}
|
||
|
||
/* Wrapper around diagnostic_impl taking a variable argument list. */
|
||
|
||
bool
|
||
emit_diagnostic (diagnostic_t kind, location_t location, int opt,
|
||
const char *gmsgid, ...)
|
||
{
|
||
auto_diagnostic_group d;
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
rich_location richloc (line_table, location);
|
||
bool ret = diagnostic_impl (&richloc, NULL, opt, gmsgid, &ap, kind);
|
||
va_end (ap);
|
||
return ret;
|
||
}
|
||
|
||
/* As above, but for rich_location *. */
|
||
|
||
bool
|
||
emit_diagnostic (diagnostic_t kind, rich_location *richloc, int opt,
|
||
const char *gmsgid, ...)
|
||
{
|
||
auto_diagnostic_group d;
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
bool ret = diagnostic_impl (richloc, NULL, opt, gmsgid, &ap, kind);
|
||
va_end (ap);
|
||
return ret;
|
||
}
|
||
|
||
/* Wrapper around diagnostic_impl taking a va_list parameter. */
|
||
|
||
bool
|
||
emit_diagnostic_valist (diagnostic_t kind, location_t location, int opt,
|
||
const char *gmsgid, va_list *ap)
|
||
{
|
||
rich_location richloc (line_table, location);
|
||
return diagnostic_impl (&richloc, NULL, opt, gmsgid, ap, kind);
|
||
}
|
||
|
||
/* An informative note at LOCATION. Use this for additional details on an error
|
||
message. */
|
||
void
|
||
inform (location_t location, const char *gmsgid, ...)
|
||
{
|
||
auto_diagnostic_group d;
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
rich_location richloc (line_table, location);
|
||
diagnostic_impl (&richloc, NULL, -1, gmsgid, &ap, DK_NOTE);
|
||
va_end (ap);
|
||
}
|
||
|
||
/* Same as "inform" above, but at RICHLOC. */
|
||
void
|
||
inform (rich_location *richloc, const char *gmsgid, ...)
|
||
{
|
||
gcc_assert (richloc);
|
||
|
||
auto_diagnostic_group d;
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
diagnostic_impl (richloc, NULL, -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, unsigned HOST_WIDE_INT n,
|
||
const char *singular_gmsgid, const char *plural_gmsgid, ...)
|
||
{
|
||
va_list ap;
|
||
va_start (ap, plural_gmsgid);
|
||
auto_diagnostic_group d;
|
||
rich_location richloc (line_table, location);
|
||
diagnostic_n_impl (&richloc, NULL, -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, ...)
|
||
{
|
||
auto_diagnostic_group d;
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
rich_location richloc (line_table, input_location);
|
||
bool ret = diagnostic_impl (&richloc, NULL, 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, ...)
|
||
{
|
||
auto_diagnostic_group d;
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
rich_location richloc (line_table, location);
|
||
bool ret = diagnostic_impl (&richloc, NULL, opt, gmsgid, &ap, DK_WARNING);
|
||
va_end (ap);
|
||
return ret;
|
||
}
|
||
|
||
/* Same as "warning at" above, but using RICHLOC. */
|
||
|
||
bool
|
||
warning_at (rich_location *richloc, int opt, const char *gmsgid, ...)
|
||
{
|
||
gcc_assert (richloc);
|
||
|
||
auto_diagnostic_group d;
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
bool ret = diagnostic_impl (richloc, NULL, opt, gmsgid, &ap, DK_WARNING);
|
||
va_end (ap);
|
||
return ret;
|
||
}
|
||
|
||
/* Same as "warning at" above, but using METADATA. */
|
||
|
||
bool
|
||
warning_meta (rich_location *richloc,
|
||
const diagnostic_metadata &metadata,
|
||
int opt, const char *gmsgid, ...)
|
||
{
|
||
gcc_assert (richloc);
|
||
|
||
auto_diagnostic_group d;
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
bool ret
|
||
= diagnostic_impl (richloc, &metadata, opt, gmsgid, &ap,
|
||
DK_WARNING);
|
||
va_end (ap);
|
||
return ret;
|
||
}
|
||
|
||
/* Same as warning_n plural variant below, but using RICHLOC. */
|
||
|
||
bool
|
||
warning_n (rich_location *richloc, int opt, unsigned HOST_WIDE_INT n,
|
||
const char *singular_gmsgid, const char *plural_gmsgid, ...)
|
||
{
|
||
gcc_assert (richloc);
|
||
|
||
auto_diagnostic_group d;
|
||
va_list ap;
|
||
va_start (ap, plural_gmsgid);
|
||
bool ret = diagnostic_n_impl (richloc, NULL, 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, unsigned HOST_WIDE_INT n,
|
||
const char *singular_gmsgid, const char *plural_gmsgid, ...)
|
||
{
|
||
auto_diagnostic_group d;
|
||
va_list ap;
|
||
va_start (ap, plural_gmsgid);
|
||
rich_location richloc (line_table, location);
|
||
bool ret = diagnostic_n_impl (&richloc, NULL, 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, ...)
|
||
{
|
||
auto_diagnostic_group d;
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
rich_location richloc (line_table, location);
|
||
bool ret = diagnostic_impl (&richloc, NULL, opt, gmsgid, &ap, DK_PEDWARN);
|
||
va_end (ap);
|
||
return ret;
|
||
}
|
||
|
||
/* Same as pedwarn above, but using RICHLOC. */
|
||
|
||
bool
|
||
pedwarn (rich_location *richloc, int opt, const char *gmsgid, ...)
|
||
{
|
||
gcc_assert (richloc);
|
||
|
||
auto_diagnostic_group d;
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
bool ret = diagnostic_impl (richloc, NULL, 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, ...)
|
||
{
|
||
auto_diagnostic_group d;
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
rich_location richloc (line_table, location);
|
||
bool ret = diagnostic_impl (&richloc, NULL, -1, gmsgid, &ap, DK_PERMERROR);
|
||
va_end (ap);
|
||
return ret;
|
||
}
|
||
|
||
/* Same as "permerror" above, but at RICHLOC. */
|
||
|
||
bool
|
||
permerror (rich_location *richloc, const char *gmsgid, ...)
|
||
{
|
||
gcc_assert (richloc);
|
||
|
||
auto_diagnostic_group d;
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
bool ret = diagnostic_impl (richloc, NULL, -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, ...)
|
||
{
|
||
auto_diagnostic_group d;
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
rich_location richloc (line_table, input_location);
|
||
diagnostic_impl (&richloc, NULL, -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, unsigned HOST_WIDE_INT n,
|
||
const char *singular_gmsgid, const char *plural_gmsgid, ...)
|
||
{
|
||
auto_diagnostic_group d;
|
||
va_list ap;
|
||
va_start (ap, plural_gmsgid);
|
||
rich_location richloc (line_table, location);
|
||
diagnostic_n_impl (&richloc, NULL, -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, ...)
|
||
{
|
||
auto_diagnostic_group d;
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
rich_location richloc (line_table, loc);
|
||
diagnostic_impl (&richloc, NULL, -1, gmsgid, &ap, DK_ERROR);
|
||
va_end (ap);
|
||
}
|
||
|
||
/* Same as above, but use RICH_LOC. */
|
||
|
||
void
|
||
error_at (rich_location *richloc, const char *gmsgid, ...)
|
||
{
|
||
gcc_assert (richloc);
|
||
|
||
auto_diagnostic_group d;
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
diagnostic_impl (richloc, NULL, -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, ...)
|
||
{
|
||
auto_diagnostic_group d;
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
rich_location richloc (line_table, input_location);
|
||
diagnostic_impl (&richloc, NULL, -1, gmsgid, &ap, DK_SORRY);
|
||
va_end (ap);
|
||
}
|
||
|
||
/* Same as above, but use location LOC instead of input_location. */
|
||
void
|
||
sorry_at (location_t loc, const char *gmsgid, ...)
|
||
{
|
||
auto_diagnostic_group d;
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
rich_location richloc (line_table, loc);
|
||
diagnostic_impl (&richloc, NULL, -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, ...)
|
||
{
|
||
auto_diagnostic_group d;
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
rich_location richloc (line_table, loc);
|
||
diagnostic_impl (&richloc, NULL, -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, ...)
|
||
{
|
||
auto_diagnostic_group d;
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
rich_location richloc (line_table, input_location);
|
||
diagnostic_impl (&richloc, NULL, -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, ...)
|
||
{
|
||
auto_diagnostic_group d;
|
||
va_list ap;
|
||
va_start (ap, gmsgid);
|
||
rich_location richloc (line_table, input_location);
|
||
diagnostic_impl (&richloc, NULL, -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)
|
||
{
|
||
/* If fancy_abort is called before the diagnostic subsystem is initialized,
|
||
internal_error will crash internally in a way that prevents a
|
||
useful message reaching the user.
|
||
This can happen with libgccjit in the case of gcc_assert failures
|
||
that occur outside of the libgccjit mutex that guards the rest of
|
||
gcc's state, including global_dc (when global_dc may not be
|
||
initialized yet, or might be in use by another thread).
|
||
Handle such cases as gracefully as possible by falling back to a
|
||
minimal abort handler that only relies on i18n. */
|
||
if (global_dc->printer == NULL)
|
||
{
|
||
/* Print the error message. */
|
||
fnotice (stderr, diagnostic_kind_text[DK_ICE]);
|
||
fnotice (stderr, "in %s, at %s:%d", function, trim_filename (file), line);
|
||
fputc ('\n', stderr);
|
||
|
||
/* Attempt to print a backtrace. */
|
||
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);
|
||
|
||
/* We can't call warn_if_plugins or emergency_dump_function as these
|
||
rely on GCC state that might not be initialized, or might be in
|
||
use by another thread. */
|
||
|
||
/* Abort the process. */
|
||
real_abort ();
|
||
}
|
||
|
||
internal_error ("in %s, at %s:%d", function, trim_filename (file), line);
|
||
}
|
||
|
||
/* class auto_diagnostic_group. */
|
||
|
||
/* Constructor: "push" this group into global_dc. */
|
||
|
||
auto_diagnostic_group::auto_diagnostic_group ()
|
||
{
|
||
global_dc->diagnostic_group_nesting_depth++;
|
||
}
|
||
|
||
/* Destructor: "pop" this group from global_dc. */
|
||
|
||
auto_diagnostic_group::~auto_diagnostic_group ()
|
||
{
|
||
if (--global_dc->diagnostic_group_nesting_depth == 0)
|
||
{
|
||
/* Handle the case where we've popped the final diagnostic group.
|
||
If any diagnostics were emitted, give the context a chance
|
||
to do something. */
|
||
if (global_dc->diagnostic_group_emission_count > 0)
|
||
{
|
||
if (global_dc->end_group_cb)
|
||
global_dc->end_group_cb (global_dc);
|
||
}
|
||
global_dc->diagnostic_group_emission_count = 0;
|
||
}
|
||
}
|
||
|
||
/* Implementation of diagnostic_path::num_events vfunc for
|
||
simple_diagnostic_path: simply get the number of events in the vec. */
|
||
|
||
unsigned
|
||
simple_diagnostic_path::num_events () const
|
||
{
|
||
return m_events.length ();
|
||
}
|
||
|
||
/* Implementation of diagnostic_path::get_event vfunc for
|
||
simple_diagnostic_path: simply return the event in the vec. */
|
||
|
||
const diagnostic_event &
|
||
simple_diagnostic_path::get_event (int idx) const
|
||
{
|
||
return *m_events[idx];
|
||
}
|
||
|
||
/* Add an event to this path at LOC within function FNDECL at
|
||
stack depth DEPTH.
|
||
|
||
Use m_context's printer to format FMT, as the text of the new
|
||
event.
|
||
|
||
Return the id of the new event. */
|
||
|
||
diagnostic_event_id_t
|
||
simple_diagnostic_path::add_event (location_t loc, tree fndecl, int depth,
|
||
const char *fmt, ...)
|
||
{
|
||
pretty_printer *pp = m_event_pp;
|
||
pp_clear_output_area (pp);
|
||
|
||
text_info ti;
|
||
rich_location rich_loc (line_table, UNKNOWN_LOCATION);
|
||
|
||
va_list ap;
|
||
|
||
va_start (ap, fmt);
|
||
|
||
ti.format_spec = _(fmt);
|
||
ti.args_ptr = ≈
|
||
ti.err_no = 0;
|
||
ti.x_data = NULL;
|
||
ti.m_richloc = &rich_loc;
|
||
|
||
pp_format (pp, &ti);
|
||
pp_output_formatted_text (pp);
|
||
|
||
va_end (ap);
|
||
|
||
simple_diagnostic_event *new_event
|
||
= new simple_diagnostic_event (loc, fndecl, depth, pp_formatted_text (pp));
|
||
m_events.safe_push (new_event);
|
||
|
||
pp_clear_output_area (pp);
|
||
|
||
return diagnostic_event_id_t (m_events.length () - 1);
|
||
}
|
||
|
||
/* struct simple_diagnostic_event. */
|
||
|
||
/* simple_diagnostic_event's ctor. */
|
||
|
||
simple_diagnostic_event::simple_diagnostic_event (location_t loc,
|
||
tree fndecl,
|
||
int depth,
|
||
const char *desc)
|
||
: m_loc (loc), m_fndecl (fndecl), m_depth (depth), m_desc (xstrdup (desc))
|
||
{
|
||
}
|
||
|
||
/* simple_diagnostic_event's dtor. */
|
||
|
||
simple_diagnostic_event::~simple_diagnostic_event ()
|
||
{
|
||
free (m_desc);
|
||
}
|
||
|
||
/* Print PATH by emitting a dummy "note" associated with it. */
|
||
|
||
DEBUG_FUNCTION
|
||
void debug (diagnostic_path *path)
|
||
{
|
||
rich_location richloc (line_table, UNKNOWN_LOCATION);
|
||
richloc.set_path (path);
|
||
inform (&richloc, "debug path");
|
||
}
|
||
|
||
/* 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, DIAGNOSTICS_COLUMN_UNIT_BYTE, 8);
|
||
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, DIAGNOSTICS_COLUMN_UNIT_BYTE, 8);
|
||
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, DIAGNOSTICS_COLUMN_UNIT_BYTE, 8);
|
||
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, DIAGNOSTICS_COLUMN_UNIT_BYTE, 8);
|
||
ASSERT_STREQ ("fix-it:\"test.c\":{5:10-5:21}:\"replacement\"\n",
|
||
pp_formatted_text (&pp));
|
||
}
|
||
|
||
/* Verify that print_parseable_fixits correctly handles
|
||
DIAGNOSTICS_COLUMN_UNIT_BYTE vs DIAGNOSTICS_COLUMN_UNIT_COLUMN. */
|
||
|
||
static void
|
||
test_print_parseable_fixits_bytes_vs_display_columns ()
|
||
{
|
||
line_table_test ltt;
|
||
rich_location richloc (line_table, UNKNOWN_LOCATION);
|
||
|
||
/* 1-based byte offsets: 12345677778888999900001234567. */
|
||
const char *const content = "smile \xf0\x9f\x98\x82 colour\n";
|
||
/* 1-based display cols: 123456[......7-8.....]9012345. */
|
||
const int tabstop = 8;
|
||
|
||
temp_source_file tmp (SELFTEST_LOCATION, ".c", content);
|
||
const char *const fname = tmp.get_filename ();
|
||
|
||
linemap_add (line_table, LC_ENTER, false, fname, 0);
|
||
linemap_line_start (line_table, 1, 100);
|
||
linemap_add (line_table, LC_LEAVE, false, NULL, 0);
|
||
source_range where;
|
||
where.m_start = linemap_position_for_column (line_table, 12);
|
||
where.m_finish = linemap_position_for_column (line_table, 17);
|
||
richloc.add_fixit_replace (where, "color");
|
||
|
||
/* Escape fname. */
|
||
pretty_printer tmp_pp;
|
||
print_escaped_string (&tmp_pp, fname);
|
||
char *escaped_fname = xstrdup (pp_formatted_text (&tmp_pp));
|
||
|
||
const int buf_len = strlen (escaped_fname) + 100;
|
||
char *const expected = XNEWVEC (char, buf_len);
|
||
|
||
{
|
||
pretty_printer pp;
|
||
print_parseable_fixits (&pp, &richloc, DIAGNOSTICS_COLUMN_UNIT_BYTE,
|
||
tabstop);
|
||
snprintf (expected, buf_len,
|
||
"fix-it:%s:{1:12-1:18}:\"color\"\n", escaped_fname);
|
||
ASSERT_STREQ (expected, pp_formatted_text (&pp));
|
||
}
|
||
{
|
||
pretty_printer pp;
|
||
print_parseable_fixits (&pp, &richloc, DIAGNOSTICS_COLUMN_UNIT_DISPLAY,
|
||
tabstop);
|
||
snprintf (expected, buf_len,
|
||
"fix-it:%s:{1:10-1:16}:\"color\"\n", escaped_fname);
|
||
ASSERT_STREQ (expected, pp_formatted_text (&pp));
|
||
}
|
||
|
||
XDELETEVEC (expected);
|
||
free (escaped_fname);
|
||
}
|
||
|
||
/* Verify that
|
||
diagnostic_get_location_text (..., SHOW_COLUMN)
|
||
generates EXPECTED_LOC_TEXT, given FILENAME, LINE, COLUMN, with
|
||
colorization disabled. */
|
||
|
||
static void
|
||
assert_location_text (const char *expected_loc_text,
|
||
const char *filename, int line, int column,
|
||
bool show_column,
|
||
int origin = 1,
|
||
enum diagnostics_column_unit column_unit
|
||
= DIAGNOSTICS_COLUMN_UNIT_BYTE)
|
||
{
|
||
test_diagnostic_context dc;
|
||
dc.show_column = show_column;
|
||
dc.column_unit = column_unit;
|
||
dc.column_origin = origin;
|
||
|
||
expanded_location xloc;
|
||
xloc.file = filename;
|
||
xloc.line = line;
|
||
xloc.column = column;
|
||
xloc.data = NULL;
|
||
xloc.sysp = false;
|
||
|
||
char *actual_loc_text = diagnostic_get_location_text (&dc, xloc);
|
||
ASSERT_STREQ (expected_loc_text, actual_loc_text);
|
||
free (actual_loc_text);
|
||
}
|
||
|
||
/* Verify that diagnostic_get_location_text works as expected. */
|
||
|
||
static void
|
||
test_diagnostic_get_location_text ()
|
||
{
|
||
const char *old_progname = progname;
|
||
progname = "PROGNAME";
|
||
assert_location_text ("PROGNAME:", NULL, 0, 0, true);
|
||
assert_location_text ("<built-in>:", "<built-in>", 42, 10, true);
|
||
assert_location_text ("foo.c:42:10:", "foo.c", 42, 10, true);
|
||
assert_location_text ("foo.c:42:9:", "foo.c", 42, 10, true, 0);
|
||
assert_location_text ("foo.c:42:1010:", "foo.c", 42, 10, true, 1001);
|
||
for (int origin = 0; origin != 2; ++origin)
|
||
assert_location_text ("foo.c:42:", "foo.c", 42, 0, true, origin);
|
||
assert_location_text ("foo.c:", "foo.c", 0, 10, true);
|
||
assert_location_text ("foo.c:42:", "foo.c", 42, 10, false);
|
||
assert_location_text ("foo.c:", "foo.c", 0, 10, false);
|
||
|
||
maybe_line_and_column (INT_MAX, INT_MAX);
|
||
maybe_line_and_column (INT_MIN, INT_MIN);
|
||
|
||
{
|
||
/* In order to test display columns vs byte columns, we need to create a
|
||
file for location_get_source_line() to read. */
|
||
|
||
const char *const content = "smile \xf0\x9f\x98\x82\n";
|
||
const int line_bytes = strlen (content) - 1;
|
||
const int def_tabstop = 8;
|
||
const cpp_char_column_policy policy (def_tabstop, cpp_wcwidth);
|
||
const int display_width = cpp_display_width (content, line_bytes, policy);
|
||
ASSERT_EQ (line_bytes - 2, display_width);
|
||
temp_source_file tmp (SELFTEST_LOCATION, ".c", content);
|
||
const char *const fname = tmp.get_filename ();
|
||
const int buf_len = strlen (fname) + 16;
|
||
char *const expected = XNEWVEC (char, buf_len);
|
||
|
||
snprintf (expected, buf_len, "%s:1:%d:", fname, line_bytes);
|
||
assert_location_text (expected, fname, 1, line_bytes, true,
|
||
1, DIAGNOSTICS_COLUMN_UNIT_BYTE);
|
||
|
||
snprintf (expected, buf_len, "%s:1:%d:", fname, line_bytes - 1);
|
||
assert_location_text (expected, fname, 1, line_bytes, true,
|
||
0, DIAGNOSTICS_COLUMN_UNIT_BYTE);
|
||
|
||
snprintf (expected, buf_len, "%s:1:%d:", fname, display_width);
|
||
assert_location_text (expected, fname, 1, line_bytes, true,
|
||
1, DIAGNOSTICS_COLUMN_UNIT_DISPLAY);
|
||
|
||
snprintf (expected, buf_len, "%s:1:%d:", fname, display_width - 1);
|
||
assert_location_text (expected, fname, 1, line_bytes, true,
|
||
0, DIAGNOSTICS_COLUMN_UNIT_DISPLAY);
|
||
|
||
XDELETEVEC (expected);
|
||
}
|
||
|
||
|
||
progname = old_progname;
|
||
}
|
||
|
||
/* Selftest for num_digits. */
|
||
|
||
static void
|
||
test_num_digits ()
|
||
{
|
||
ASSERT_EQ (1, num_digits (0));
|
||
ASSERT_EQ (1, num_digits (9));
|
||
ASSERT_EQ (2, num_digits (10));
|
||
ASSERT_EQ (2, num_digits (99));
|
||
ASSERT_EQ (3, num_digits (100));
|
||
ASSERT_EQ (3, num_digits (999));
|
||
ASSERT_EQ (4, num_digits (1000));
|
||
ASSERT_EQ (4, num_digits (9999));
|
||
ASSERT_EQ (5, num_digits (10000));
|
||
ASSERT_EQ (5, num_digits (99999));
|
||
ASSERT_EQ (6, num_digits (100000));
|
||
ASSERT_EQ (6, num_digits (999999));
|
||
ASSERT_EQ (7, num_digits (1000000));
|
||
ASSERT_EQ (7, num_digits (9999999));
|
||
ASSERT_EQ (8, num_digits (10000000));
|
||
ASSERT_EQ (8, num_digits (99999999));
|
||
}
|
||
|
||
/* Run all of the selftests within this file. */
|
||
|
||
void
|
||
c_diagnostic_cc_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 ();
|
||
test_print_parseable_fixits_bytes_vs_display_columns ();
|
||
test_diagnostic_get_location_text ();
|
||
test_num_digits ();
|
||
|
||
}
|
||
|
||
} // namespace selftest
|
||
|
||
#endif /* #if CHECKING_P */
|
||
|
||
#if __GNUC__ >= 10
|
||
# pragma GCC diagnostic pop
|
||
#endif
|