Pacify "gcc -Wunused" for the input function from Flex.

[bison.git] / src / complain.c

diff --git a/src/complain.c b/src/complain.c
index 579cdf86c6389a3e6a991cb7807700342c31fc31..4cc35c8a9506768cafed48fddc37dfaba97388b0 100644 (file)
--- a/src/complain.c
+++ b/src/complain.c
@@ -1,10 +1,12 @@
 /* Declaration for error-reporting function for Bison.
 /* Declaration for error-reporting function for Bison.

-   Copyright 2000, 2001 Free Software Foundation, Inc.

 
 

-   This program is free software; you can redistribute it and/or modify it
-   under the terms of the GNU General Public License as published by the
-   Free Software Foundation; either version 2, or (at your option) any
-   later version.
+   Copyright (C) 2000, 2001, 2002, 2004, 2005, 2006, 2009
+   Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.

 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of


@@ -12,363 +14,147 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License

-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
-   USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

 
 /* Based on error.c and error.h,
    written by David MacKenzie <djm@gnu.ai.mit.edu>.  */
 
 
 /* Based on error.c and error.h,
    written by David MacKenzie <djm@gnu.ai.mit.edu>.  */
 

+#include <config.h>

 #include "system.h"
 
 #include "system.h"
 

-#if HAVE_VPRINTF || HAVE_DOPRNT || _LIBC
-# ifdef __STDC__
-#  include <stdarg.h>
-#  define VA_START(args, lastarg) va_start(args, lastarg)
-# else
-#  include <varargs.h>
-#  define VA_START(args, lastarg) va_start(args)
-# endif
-#else
-# define va_alist a1, a2, a3, a4, a5, a6, a7, a8
-# define va_dcl char *a1, *a2, *a3, *a4, *a5, *a6, *a7, *a8;
-#endif
-
-#if STDC_HEADERS || _LIBC
-# include <stdlib.h>
-# include <string.h>
-#else
-void exit ();
-#endif
-
-/* To get error_one_per_line. */
-#include "error.h"
+#include <stdarg.h>

 
 #include "complain.h"
 
 #include "complain.h"

+#include "files.h"
+#include "getargs.h"

 
 

-#ifndef HAVE_DECL_STRERROR_R
-"this configure-time declaration test was not run"
-#endif
-#if !HAVE_DECL_STRERROR_R
-char *strerror_r ();
-#endif
-
-#ifndef _
-# define _(String) String
-#endif
-
-#ifdef _LIBC
-/* In the GNU C library, there is a predefined variable for this.  */
-
-# define program_name program_invocation_name
-# include <errno.h>
+bool complaint_issued;

 
 

-/* In GNU libc we want do not want to use the common name `error' directly.
-   Instead make it a weak alias.  */
-# define error __error
-# define error_at_line __error_at_line
-
-# ifdef USE_IN_LIBIO
-#  include <libio/iolibio.h>
-#  define fflush(s) _IO_fflush (s)
-# endif
-
-#else /* not _LIBC */
-
-/* The calling program should define program_name and set it to the
-   name of the executing program.  */
-extern char *program_name;
+\f

 
 

-# ifdef HAVE_STRERROR_R
-#  define __strerror_r strerror_r
-# else
-#  if HAVE_STRERROR
-#   ifndef strerror            /* On some systems, strerror is a macro */
-char *strerror ();
-#   endif
-#  else
-static char *
-private_strerror (errnum)
-     int errnum;
+/** Report an error message.
+ *
+ * \param loc     the location, defaulting to the current file,
+ *                or the program name.
+ * \param prefix  put before the message (e.g., "warning").
+ * \param message the error message, a printf format string.
+ * \param args    the arguments of the format string.
+ */
+static
+void
+error_message (location *loc,
+              const char *prefix,
+              const char *message, va_list args)

 {
 {

-  extern char *sys_errlist[];
-  extern int sys_nerr;
+  if (loc)
+    location_print (stderr, *loc);
+  else
+    fputs (current_file ? current_file : program_name, stderr);
+  fputs (": ", stderr);
+
+  if (prefix)
+    fprintf (stderr, "%s: ", prefix);

 
 

-  if (errnum > 0 && errnum <= sys_nerr)
-    return _(sys_errlist[errnum]);
-  return _("Unknown system error");
+  vfprintf (stderr, message, args);
+  va_end (args);
+  putc ('\n', stderr);
+  fflush (stderr);

 }
 }

-#   define strerror private_strerror
-#  endif /* HAVE_STRERROR */
-# endif        /* HAVE_STRERROR_R */
-#endif /* not _LIBC */

 
 

-/* This variable is incremented each time `warn' is called.  */
-unsigned int warn_message_count;
+/** Wrap error_message() with varargs handling. */
+#define ERROR_MESSAGE(Loc, Prefix, Message)    \
+{                                              \
+  va_list args;                                        \
+  va_start (args, Message);                    \
+  error_message (Loc, Prefix, Message, args);  \
+}

 
 

-/* This variable is incremented each time `complain' is called.  */
-unsigned int complain_message_count;

 
 

-\f

 /*--------------------------------.
 | Report a warning, and proceed.  |
 `--------------------------------*/
 
 /*--------------------------------.
 | Report a warning, and proceed.  |
 `--------------------------------*/
 

-void
-#if defined VA_START && defined __STDC__
-warn_at (location_t location, const char *message, ...)
-#else
-warn_at (location, message, va_alist)
-  location_t location
-  char *message;
-  va_dcl
-#endif
+static void
+set_warning_issued (void)

 {
 {

-#ifdef VA_START
-  va_list args;
-#endif
-
-  if (error_one_per_line)
+  static bool warning_issued = false;
+  if (!warning_issued && (warnings_flag & warnings_error))

     {
     {

-      static const char *old_infile;
-      static int old_lineno;
-
-      if (old_lineno == location.first_line &&
-         (infile == old_infile || !strcmp (old_infile, infile)))
-       /* Simply return and print nothing.  */
-       return;
-
-      old_infile = infile;
-      old_lineno = location.first_line;
+      fprintf (stderr, "%s: warnings being treated as errors\n", program_name);
+      complaint_issued = true;

     }
     }

-
-  fflush (stdout);
-  LOCATION_PRINT (stderr, location);
-  fputs (": ", stderr);
-  fputs (_("warning: "), stderr);
-
-#ifdef VA_START
-  VA_START (args, message);
-  vfprintf (stderr, message, args);
-  va_end (args);
-#else
-  fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8);
-#endif
-
-  ++warn_message_count;
-  putc ('\n', stderr);
-  fflush (stderr);
+  warning_issued = true;

 }
 
 }
 

+void
+warn_at (location loc, const char *message, ...)
+{
+  set_warning_issued ();
+  ERROR_MESSAGE (&loc, _("warning"), message);
+}

 
 void
 
 void

-#if defined VA_START && defined __STDC__

 warn (const char *message, ...)
 warn (const char *message, ...)

-#else
-warn (message, va_alist)
-     char *message;
-     va_dcl
-#endif

 {
 {

-#ifdef VA_START
-  va_list args;
-#endif
-
-  if (error_one_per_line)
-    {
-      static const char *old_infile;
-      static int old_lineno;
-
-      if (old_lineno == lineno &&
-         (infile == old_infile || !strcmp (old_infile, infile)))
-       /* Simply return and print nothing.  */
-       return;
-
-      old_infile = infile;
-      old_lineno = lineno;
-    }
-
-  fflush (stdout);
-  if (infile != NULL)
-    fprintf (stderr, "%s:%d: ", infile, lineno);
-  else
-    fprintf (stderr, "%s:", program_name);
-
-  fputs (_("warning: "), stderr);
+  set_warning_issued ();
+  ERROR_MESSAGE (NULL, _("warning"), message);
+}

 
 

-#ifdef VA_START
-  VA_START (args, message);
-  vfprintf (stderr, message, args);
-  va_end (args);
-#else
-  fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8);
-#endif

 
 

-  ++warn_message_count;
-  putc ('\n', stderr);
-  fflush (stderr);
-}
-\f

 /*-----------------------------------------------------------.
 | An error has occurred, but we can proceed, and die later.  |
 `-----------------------------------------------------------*/
 
 void
 /*-----------------------------------------------------------.
 | An error has occurred, but we can proceed, and die later.  |
 `-----------------------------------------------------------*/
 
 void

-#if defined VA_START && defined __STDC__
-complain_at (location_t location, const char *message, ...)
-#else
-complain_at (location, message, va_alist)
-  location_t location;
-  char *message;
-  va_dcl
-#endif
+complain_at (location loc, const char *message, ...)

 {
 {

-#ifdef VA_START
-  va_list args;
-#endif
-
-  if (error_one_per_line)
-    {
-      static const char *old_infile;
-      static int old_lineno;
-
-      if (old_lineno == location.first_line &&
-         (infile == old_infile || !strcmp (old_infile, infile)))
-       /* Simply return and print nothing.  */
-       return;
-
-      old_infile = infile;
-      old_lineno = location.first_line;
-    }
-
-  fflush (stdout);
-  LOCATION_PRINT (stderr, location);
-  fputs (": ", stderr);
-
-#ifdef VA_START
-  VA_START (args, message);
-  vfprintf (stderr, message, args);
-  va_end (args);
-#else
-  fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8);
-#endif
-
-  ++complain_message_count;
-  putc ('\n', stderr);
-  fflush (stderr);
+  ERROR_MESSAGE (&loc, NULL, message);
+  complaint_issued = true;

 }
 
 }
 

-

 void
 void

-#if defined VA_START && defined __STDC__

 complain (const char *message, ...)
 complain (const char *message, ...)

-#else
-complain (message, va_alist)
-     char *message;
-     va_dcl
-#endif

 {
 {

-#ifdef VA_START
-  va_list args;
-#endif
+  ERROR_MESSAGE (NULL, NULL, message);
+  complaint_issued = true;
+}

 
 

-  if (error_one_per_line)
-    {
-      static const char *old_infile;
-      static int old_lineno;

 
 

-      if (old_lineno == lineno &&
-         (infile == old_infile || !strcmp (old_infile, infile)))
-       /* Simply return and print nothing.  */
-       return;
+/*--------------------------------------------------------------.
+| An incompatibility with POSIX Yacc: mapped either to warn* or |
+| complain* depending on yacc_flag.                             |
+`--------------------------------------------------------------*/

 
 

-      old_infile = infile;
-      old_lineno = lineno;
+void
+yacc_at (location loc, const char *message, ...)
+{
+  if (yacc_flag)
+    {
+      ERROR_MESSAGE (&loc, NULL, message);
+      complaint_issued = true;

     }
     }

+  else if (warnings_flag & warnings_yacc)
+    {
+      set_warning_issued ();
+      ERROR_MESSAGE (&loc, _("warning"), message);
+    }
+}

 
 

-  fflush (stdout);
-  if (infile != NULL)
-    fprintf (stderr, "%s:%d: ", infile, lineno);
-  else
-    fprintf (stderr, "%s:", program_name);
-
-#ifdef VA_START
-  VA_START (args, message);
-  vfprintf (stderr, message, args);
-  va_end (args);
-#else
-  fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8);
-#endif

 
 

-  ++complain_message_count;
-  putc ('\n', stderr);
-  fflush (stderr);
-}
-\f

 /*-------------------------------------------------.
 | A severe error has occurred, we cannot proceed.  |
 `-------------------------------------------------*/
 
 void
 /*-------------------------------------------------.
 | A severe error has occurred, we cannot proceed.  |
 `-------------------------------------------------*/
 
 void

-#if defined VA_START && defined __STDC__
-fatal_at (location_t location, const char *message, ...)
-#else
-fatal (location, message, va_alist)
-  location_t location;
-  char *message;
-  va_dcl
-#endif
+fatal_at (location loc, const char *message, ...)

 {
 {

-#ifdef VA_START
-  va_list args;
-#endif
-
-  fflush (stdout);
-  LOCATION_PRINT (stderr, location);
-  fputs (": ", stderr);
-  fputs (_("fatal error: "), stderr);
-
-#ifdef VA_START
-  VA_START (args, message);
-  vfprintf (stderr, message, args);
-  va_end (args);
-#else
-  fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8);
-#endif
-  putc ('\n', stderr);
-  fflush (stderr);
-  exit (1);
+  ERROR_MESSAGE (&loc, _("fatal error"), message);
+  exit (EXIT_FAILURE);

 }
 
 void
 }
 
 void

-#if defined VA_START && defined __STDC__

 fatal (const char *message, ...)
 fatal (const char *message, ...)

-#else
-fatal (message, va_alist)
-     char *message;
-     va_dcl
-#endif

 {
 {

-#ifdef VA_START
-  va_list args;
-#endif
-
-  fflush (stdout);
-  if (infile != NULL)
-    fprintf (stderr, "%s:%d: ", infile, lineno);
-  else
-    fprintf (stderr, "%s:", program_name);
-
-  fputs (_("fatal error: "), stderr);
-
-#ifdef VA_START
-  VA_START (args, message);
-  vfprintf (stderr, message, args);
-  va_end (args);
-#else
-  fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8);
-#endif
-  putc ('\n', stderr);
-  fflush (stderr);
-  exit (1);
+  ERROR_MESSAGE (NULL, _("fatal error"), message);
+  exit (EXIT_FAILURE);

 }
 }