* doc/bison.texinfo (Stack Overflow): xref to Recursion.

[bison.git] / src / complain.c

diff --git a/src/complain.c b/src/complain.c
index 04b82ad073ff781995f041e98a399c46fa50ea94..44d486d40141de6b2f391aa8bc17211db23508f3 100644 (file)
--- a/src/complain.c
+++ b/src/complain.c
@@ -1,5 +1,5 @@
 /* Declaration for error-reporting function for Bison.
 /* Declaration for error-reporting function for Bison.

-   Copyright (C) 2000 Free Software Foundation, Inc.
+   Copyright (C) 2000, 2001, 2002  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
 
    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


@@ -19,14 +19,10 @@
 /* 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>.  */
 

-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#include <stdio.h>
+#include "system.h"

 
 #if HAVE_VPRINTF || HAVE_DOPRNT || _LIBC
 
 #if HAVE_VPRINTF || HAVE_DOPRNT || _LIBC

-# if __STDC__
+# ifdef __STDC__

 #  include <stdarg.h>
 #  define VA_START(args, lastarg) va_start(args, lastarg)
 # else
 #  include <stdarg.h>
 #  define VA_START(args, lastarg) va_start(args, lastarg)
 # else


@@ -53,12 +49,48 @@ void exit ();
 
 #ifdef _LIBC
 /* In the GNU C library, there is a predefined variable for this.  */
 
 #ifdef _LIBC
 /* In the GNU C library, there is a predefined variable for this.  */

+

 # define program_name program_invocation_name
 # define program_name program_invocation_name

+# include <errno.h>
+
+/* 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 */
 #else /* not _LIBC */

+

 /* The calling program should define program_name and set it to the
    name of the executing program.  */
 extern char *program_name;
 /* The calling program should define program_name and set it to the
    name of the executing program.  */
 extern char *program_name;

-#endif
+
+# if HAVE_STRERROR
+#  ifndef HAVE_DECL_STRERROR
+"this configure-time declaration test was not run"
+#  endif
+#  if !HAVE_DECL_STRERROR && !defined strerror
+char *strerror PARAMS ((int));
+#  endif
+# else
+static char *
+private_strerror (errnum)
+     int errnum;
+{
+  extern char *sys_errlist[];
+  extern int sys_nerr;
+
+  if (errnum > 0 && errnum <= sys_nerr)
+    return _(sys_errlist[errnum]);
+  return _("Unknown system error");
+}
+#  define strerror private_strerror
+# endif /* HAVE_STRERROR */
+#endif /* not _LIBC */

 
 /* This variable is incremented each time `warn' is called.  */
 unsigned int warn_message_count;
 
 /* This variable is incremented each time `warn' is called.  */
 unsigned int warn_message_count;


@@ -66,48 +98,58 @@ unsigned int warn_message_count;
 /* This variable is incremented each time `complain' is called.  */
 unsigned int complain_message_count;
 
 /* This variable is incremented each time `complain' is called.  */
 unsigned int complain_message_count;
 

-/* Sometimes we want to have at most one error per line.  This
-   variable controls whether this mode is selected or not.  */
-int error_one_per_line;

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

-#if defined VA_START && __STDC__
-warn (const char *message, ...)
+#if defined VA_START && defined __STDC__
+warn_at (location_t location, const char *message, ...)

 #else
 #else

-warn (message, va_alist)
-     char *message;
-     va_dcl
+warn_at (location, message, va_alist)
+  location_t location
+  char *message;
+  va_dcl

 #endif
 {
 #ifdef VA_START
   va_list args;
 #endif
 
 #endif
 {
 #ifdef VA_START
   va_list args;
 #endif
 

-  if (error_one_per_line)
-    {
-      static const char *old_infile;
-      static int old_lineno;
+  fflush (stdout);
+  LOCATION_PRINT (stderr, location);
+  fputs (": ", stderr);
+  fputs (_("warning: "), stderr);

 
 

-      if (old_lineno == lineno &&
-         (infile == old_infile || !strcmp (old_infile, infile)))
-       /* Simply return and print nothing.  */
-       return;
+#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

 
 

-      old_infile = infile;
-      old_lineno = lineno;
-    }
+  ++warn_message_count;
+  putc ('\n', stderr);
+  fflush (stderr);
+}

 
 

-  fflush (stdout);
-  if (infile != NULL)
-    fprintf (stderr, "%s:%d: ", infile, lineno);
-  else
-    fprintf (stderr, "%s:", program_name);
+void
+#if defined VA_START && defined __STDC__
+warn (const char *message, ...)
+#else
+warn (message, va_alist)
+  char *message;
+  va_dcl
+#endif
+{
+#ifdef VA_START
+  va_list args;
+#endif

 
 

-  fputs (_("warning: "), stderr);
+  fflush (stdout);
+  fprintf (stderr, "%s: %s", infile ? infile : program_name, _("warning: "));

 
 #ifdef VA_START
   VA_START (args, message);
 
 #ifdef VA_START
   VA_START (args, message);


@@ -127,7 +169,38 @@ warn (message, va_alist)
 `-----------------------------------------------------------*/
 
 void
 `-----------------------------------------------------------*/
 
 void

-#if defined VA_START && __STDC__
+#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
+{
+#ifdef VA_START
+  va_list args;
+#endif
+
+  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);
+}
+
+void
+#if defined VA_START && defined __STDC__

 complain (const char *message, ...)
 #else
 complain (message, va_alist)
 complain (const char *message, ...)
 #else
 complain (message, va_alist)


@@ -139,25 +212,8 @@ complain (message, va_alist)
   va_list args;
 #endif
 
   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);
   fflush (stdout);

-  if (infile != NULL)
-    fprintf (stderr, "%s:%d: ", infile, lineno);
-  else
-    fprintf (stderr, "%s:", program_name);
+  fprintf (stderr, "%s: ", infile ? infile : program_name);

 
 #ifdef VA_START
   VA_START (args, message);
 
 #ifdef VA_START
   VA_START (args, message);


@@ -177,12 +233,13 @@ complain (message, va_alist)
 `-------------------------------------------------*/
 
 void
 `-------------------------------------------------*/
 
 void

-#if defined VA_START && __STDC__
-fatal (const char *message, ...)
+#if defined VA_START && defined __STDC__
+fatal_at (location_t location, const char *message, ...)

 #else
 #else

-fatal (message, va_alist)
-     char *message;
-     va_dcl
+fatal_at (location, message, va_alist)
+  location_t location;
+  char *message;
+  va_dcl

 #endif
 {
 #ifdef VA_START
 #endif
 {
 #ifdef VA_START


@@ -190,11 +247,8 @@ fatal (message, va_alist)
 #endif
 
   fflush (stdout);
 #endif
 
   fflush (stdout);

-  if (infile != NULL)
-    fprintf (stderr, "%s:%d: ", infile, lineno);
-  else
-    fprintf (stderr, "%s:", program_name);
-
+  LOCATION_PRINT (stderr, location);
+  fputs (": ", stderr);

   fputs (_("fatal error: "), stderr);
 
 #ifdef VA_START
   fputs (_("fatal error: "), stderr);
 
 #ifdef VA_START


@@ -208,20 +262,12 @@ fatal (message, va_alist)
   fflush (stderr);
   exit (1);
 }
   fflush (stderr);
   exit (1);
 }

-\f
-/*------------------------------------------------------------------.
-| A severe error has occurred, we cannot proceed. Exit with STATUS, |
-| and report the error message of the errno ERRNUM.                 |
-`------------------------------------------------------------------*/

 
 void
 
 void

-#if defined VA_START && __STDC__
-error (int status, int errnum,
-       const char *message, ...)
+#if defined VA_START && defined __STDC__
+fatal (const char *message, ...)

 #else
 #else

-error (status, errnum, message, va_alist)
-     int status;
-     int errnum;
+fatal (message, va_alist)

      char *message;
      va_dcl
 #endif
      char *message;
      va_dcl
 #endif


@@ -231,10 +277,7 @@ error (status, errnum, message, va_alist)
 #endif
 
   fflush (stdout);
 #endif
 
   fflush (stdout);

-  if (infile != NULL)
-    fprintf (stderr, "%s:%d: ", infile, lineno);
-  else
-    fprintf (stderr, "%s:", program_name);
+  fprintf (stderr, "%s: ", infile ? infile : program_name);

 
   fputs (_("fatal error: "), stderr);
 
 
   fputs (_("fatal error: "), stderr);
 


@@ -245,25 +288,7 @@ error (status, errnum, message, va_alist)
 #else
   fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8);
 #endif
 #else
   fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8);
 #endif

-
-  if (errnum)
-    {
-#if defined HAVE_STRERROR_R || _LIBC
-      char errbuf[1024];
-# if HAVE_WORKING_STRERROR_R || _LIBC
-      fprintf (stderr, ": %s", __strerror_r (errnum, errbuf, sizeof errbuf));
-# else
-      /* Don't use __strerror_r's return value because on some systems
-        (at least DEC UNIX 4.0[A-D]) strerror_r returns `int'.  */
-      __strerror_r (errnum, errbuf, sizeof errbuf);
-      fprintf (stderr, ": %s", errbuf);
-# endif
-#else
-      fprintf (stderr, ": %s", strerror (errnum));
-#endif
-    }

   putc ('\n', stderr);
   fflush (stderr);
   putc ('\n', stderr);
   fflush (stderr);

-  if (status)
-    exit (status);
+  exit (1);

 }
 }