/* Default error handlers for CPP Library.   Copyright (C) 1986-2026 Free Software Foundation, Inc.   Written by Per Bothner, 1994.   Based on CCCP program by Paul Rubin, June 1986   Adapted to ANSI C, Richard Stallman, Jan 1987 This program is free software; you can redistribute it and/or modify itunder the terms of the GNU General Public License as published by theFree Software Foundation; either version 3, or (at your option) anylater version. This program is distributed in the hope that it will be useful,but WITHOUT ANY WARRANTY; without even the implied warranty ofMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See theGNU General Public License for more details. You should have received a copy of the GNU General Public Licensealong with this program; see the file COPYING3.  If not see<http://www.gnu.org/licenses/>.  In other words, you are welcome to use, share and improve this program. You are forbidden to forbid anyone else to use, share and improve what you give them.   Help stamp out software-hoarding!  */ #include "config.h"#include "system.h"#include "cpplib.h"#include "internal.h" /* Get a location_t for the current location in PFILE,   generally that of the previously lexed token.  */ location_tcpp_diagnostic_get_current_location (cpp_reader *pfile){  if (CPP_OPTION (pfile, traditional))    {      if (pfile->state.in_directive)	return pfile->directive_line;      else	return pfile->line_table->highest_line;    }  /* We don't want to refer to a token before the beginning of the     current run -- that is invalid.  */  else if (pfile->cur_token == pfile->cur_run->base)    {      return 0;    }  else    {      return pfile->cur_token[-1].src_loc;    }} /* Sometimes a diagnostic needs to be generated before libcpp has been able   to generate a valid location for the current token; in that case, the   non-zero location returned by this function is the preferred one to use.  */ location_tcpp_get_diagnostic_override_loc (const cpp_reader *pfile){  return pfile->diagnostic_override_loc;} /* Print a diagnostic at the given location.  */ ATTRIBUTE_CPP_PPDIAG (5, 0)static boolcpp_diagnostic_at (cpp_reader * pfile, enum cpp_diagnostic_level level,		   enum cpp_warning_reason reason, rich_location *richloc,		   const char *msgid, va_list *ap){  if (!pfile->cb.diagnostic)    abort ();  if (pfile->diagnostic_override_loc && level != CPP_DL_NOTE)    {      rich_location rc2{pfile->line_table, pfile->diagnostic_override_loc};      rc2.set_escape_on_output (richloc->escape_on_output_p ());      return pfile->cb.diagnostic (pfile, level, reason, &rc2, _(msgid), ap);    }  return pfile->cb.diagnostic (pfile, level, reason, richloc, _(msgid), ap);} /* Print a diagnostic at the location of the previously lexed token.  */ ATTRIBUTE_CPP_PPDIAG (4, 0)static boolcpp_diagnostic (cpp_reader * pfile, enum cpp_diagnostic_level level,		enum cpp_warning_reason reason,		const char *msgid, va_list *ap){  location_t src_loc = cpp_diagnostic_get_current_location (pfile);  rich_location richloc (pfile->line_table, src_loc);  return cpp_diagnostic_at (pfile, level, reason, &richloc, msgid, ap);} /* Print a warning or error, depending on the value of LEVEL.  */ boolcpp_error (cpp_reader * pfile, enum cpp_diagnostic_level level,	   const char *msgid, ...){  va_list ap;  bool ret;   va_start (ap, msgid);   ret = cpp_diagnostic (pfile, level, CPP_W_NONE, msgid, &ap);   va_end (ap);  return ret;} /* Print a warning.  The warning reason may be given in REASON.  */ boolcpp_warning (cpp_reader * pfile, enum cpp_warning_reason reason,	     const char *msgid, ...){  va_list ap;  bool ret;   va_start (ap, msgid);   ret = cpp_diagnostic (pfile, CPP_DL_WARNING, reason, msgid, &ap);   va_end (ap);  return ret;} /* Print a pedantic warning.  The warning reason may be given in REASON.  */ boolcpp_pedwarning (cpp_reader * pfile, enum cpp_warning_reason reason,		const char *msgid, ...){  va_list ap;  bool ret;   va_start (ap, msgid);   ret = cpp_diagnostic (pfile, CPP_DL_PEDWARN, reason, msgid, &ap);   va_end (ap);  return ret;} /* Print a warning, including system headers.  The warning reason may be   given in REASON.  */ boolcpp_warning_syshdr (cpp_reader * pfile, enum cpp_warning_reason reason,		    const char *msgid, ...){  va_list ap;  bool ret;   va_start (ap, msgid);   ret = cpp_diagnostic (pfile, CPP_DL_WARNING_SYSHDR, reason, msgid, &ap);   va_end (ap);  return ret;} /* As cpp_warning above, but use RICHLOC as the location of the diagnostic.  */ bool cpp_warning_at (cpp_reader *pfile, enum cpp_warning_reason reason,		     rich_location *richloc, const char *msgid, ...){  va_list ap;  bool ret;   va_start (ap, msgid);   ret = cpp_diagnostic_at (pfile, CPP_DL_WARNING, reason, richloc,			   msgid, &ap);   va_end (ap);  return ret; } /* As cpp_pedwarning above, but use RICHLOC as the location of the   diagnostic.  */ boolcpp_pedwarning_at (cpp_reader * pfile, enum cpp_warning_reason reason,		   rich_location *richloc, const char *msgid, ...){  va_list ap;  bool ret;   va_start (ap, msgid);   ret = cpp_diagnostic_at (pfile, CPP_DL_PEDWARN, reason, richloc,			   msgid, &ap);   va_end (ap);  return ret;} /* Print a diagnostic at a specific location.  */ ATTRIBUTE_CPP_PPDIAG (6, 0)static boolcpp_diagnostic_with_line (cpp_reader * pfile, enum cpp_diagnostic_level level,			  enum cpp_warning_reason reason,			  location_t src_loc, unsigned int column,			  const char *msgid, va_list *ap){  bool ret;   if (!pfile->cb.diagnostic)    abort ();  /* Don't override note locations, which will likely make the note     more confusing.  */  const bool do_loc_override    = pfile->diagnostic_override_loc && level != CPP_DL_NOTE;  if (do_loc_override)    src_loc = pfile->diagnostic_override_loc;  rich_location richloc (pfile->line_table, src_loc);  if (column && !do_loc_override)    richloc.override_column (column);  ret = pfile->cb.diagnostic (pfile, level, reason, &richloc, _(msgid), ap);   return ret;} /* Print a warning or error, depending on the value of LEVEL.  */ boolcpp_error_with_line (cpp_reader *pfile, enum cpp_diagnostic_level level,		     location_t src_loc, unsigned int column,		     const char *msgid, ...){  va_list ap;  bool ret;   va_start (ap, msgid);   ret = cpp_diagnostic_with_line (pfile, level, CPP_W_NONE, src_loc,                                  column, msgid, &ap);   va_end (ap);  return ret;} /* Print a warning.  The warning reason may be given in REASON.  */ boolcpp_warning_with_line (cpp_reader *pfile, enum cpp_warning_reason reason,		       location_t src_loc, unsigned int column,		       const char *msgid, ...){  va_list ap;  bool ret;   va_start (ap, msgid);   ret = cpp_diagnostic_with_line (pfile, CPP_DL_WARNING, reason, src_loc,                                  column, msgid, &ap);   va_end (ap);  return ret;} /* Print a pedantic warning.  The warning reason may be given in REASON.  */ boolcpp_pedwarning_with_line (cpp_reader *pfile, enum cpp_warning_reason reason,			  location_t src_loc, unsigned int column,			  const char *msgid, ...){  va_list ap;  bool ret;   va_start (ap, msgid);   ret = cpp_diagnostic_with_line (pfile, CPP_DL_PEDWARN, reason, src_loc,                                  column, msgid, &ap);   va_end (ap);  return ret;} /* Print a warning, including system headers.  The warning reason may be   given in REASON.  */ boolcpp_warning_with_line_syshdr (cpp_reader *pfile, enum cpp_warning_reason reason,			      location_t src_loc, unsigned int column,			      const char *msgid, ...){  va_list ap;  bool ret;   va_start (ap, msgid);   ret = cpp_diagnostic_with_line (pfile, CPP_DL_WARNING_SYSHDR, reason, src_loc,                                  column, msgid, &ap);   va_end (ap);  return ret;} /* As cpp_error, but use SRC_LOC as the location of the error, without   a column override.  */ boolcpp_error_at (cpp_reader * pfile, enum cpp_diagnostic_level level,	      location_t src_loc, const char *msgid, ...){  va_list ap;  bool ret;   va_start (ap, msgid);   rich_location richloc (pfile->line_table, src_loc);  ret = cpp_diagnostic_at (pfile, level, CPP_W_NONE, &richloc,			   msgid, &ap);   va_end (ap);  return ret;} /* As cpp_error, but use RICHLOC as the location of the error, without   a column override.  */ boolcpp_error_at (cpp_reader * pfile, enum cpp_diagnostic_level level,	      rich_location *richloc, const char *msgid, ...){  va_list ap;  bool ret;   va_start (ap, msgid);   ret = cpp_diagnostic_at (pfile, level, CPP_W_NONE, richloc,			   msgid, &ap);   va_end (ap);  return ret;} /* Print a warning or error, depending on the value of LEVEL.  Include   information from errno.  */ boolcpp_errno (cpp_reader *pfile, enum cpp_diagnostic_level level,	   const char *msgid){  return cpp_error (pfile, level, "%s: %s", _(msgid), xstrerror (errno));} /* Print a warning or error, depending on the value of LEVEL.  Include   information from errno.  Unlike cpp_errno, the argument is a filename   that is not localized, but "" is replaced with localized "stdout".  */ boolcpp_errno_filename (cpp_reader *pfile, enum cpp_diagnostic_level level,		    const char *filename,		    location_t loc){  if (filename[0] == '\0')    filename = _("stdout");   return cpp_error_at (pfile, level, loc, "%s: %s", filename,		       xstrerror (errno));} cpp_auto_suppress_diagnostics::cpp_auto_suppress_diagnostics (cpp_reader *pfile)  : m_pfile (pfile), m_cb (pfile->cb.diagnostic){  m_pfile->cb.diagnostic    = [] (cpp_reader *, cpp_diagnostic_level, cpp_warning_reason,	  rich_location *, const char *, va_list *)    {      return true;    };} cpp_auto_suppress_diagnostics::~cpp_auto_suppress_diagnostics (){  m_pfile->cb.diagnostic = m_cb;}