2.5-18.1

1 files changed, 65 insertions, 142 deletions

diff --git a/misc/error.c b/misc/error.c
index 2501583366..85d1cffbf9 100644
--- a/misc/error.c
+++ b/misc/error.c
@@ -1,7 +1,6 @@
 /* Error handler for noninteractive utilities
-   Copyright (C) 1990-1998, 2000-2003, 2004 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.  Its master source is NOT part of
-   the C library, however.  The master source lives in /gd/gnu/lib.
+   Copyright (C) 1990-1998, 2000-2005, 2006 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
@@ -24,33 +23,19 @@
 # include <config.h>
 #endif
 
+#include <stdarg.h>
 #include <stdio.h>
-#include <libintl.h>
+#include <stdlib.h>
+#include <string.h>
+
 #ifdef _LIBC
+# include <libintl.h>
+# include <stdbool.h>
+# include <stdint.h>
 # include <wchar.h>
 # define mbsrtowcs __mbsrtowcs
 #endif
 
-#if HAVE_VPRINTF || HAVE_DOPRNT || _LIBC
-# if __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
-
 #include "error.h"
 
 #ifndef _
@@ -60,11 +45,7 @@ void exit ();
 /* If NULL, error will flush stdout, then print on stderr the program
    name, a colon and a space.  Otherwise, error will call this
    function without parameters instead.  */
-void (*error_print_progname) (
-#if __STDC__ - 0
-			      void
-#endif
-			      );
+void (*error_print_progname) (void);
 
 /* This variable is incremented each time `error' is called.  */
 unsigned int error_message_count;
@@ -74,6 +55,7 @@ unsigned int error_message_count;
 
 # define program_name program_invocation_name
 # include <errno.h>
+# include <limits.h>
 # include <libio/libioP.h>
 
 /* In GNU libc we want do not want to use the common name `error' directly.
@@ -109,27 +91,6 @@ extern char *program_name;
 
 # if HAVE_STRERROR_R || defined strerror_r
 #  define __strerror_r strerror_r
-# else
-#  if HAVE_STRERROR
-#   ifndef HAVE_DECL_STRERROR
-"this configure-time declaration test was not run"
-#   endif
-#   if !HAVE_DECL_STRERROR
-char *strerror ();
-#   endif
-#  else
-static char *
-private_strerror (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	/* HAVE_STRERROR_R || defined strerror_r */
 #endif	/* not _LIBC */
 
@@ -158,38 +119,33 @@ print_errno_message (int errnum)
 #endif
 
 #if _LIBC
-  if (_IO_fwide (stderr, 0) > 0)
-    {
-      __fwprintf (stderr, L": %s", s);
-      return;
-    }
-#endif
-
+  __fxprintf (NULL, ": %s", s);
+#else
   fprintf (stderr, ": %s", s);
+#endif
 }
 
-#ifdef VA_START
 static void
 error_tail (int status, int errnum, const char *message, va_list args)
 {
-# if HAVE_VPRINTF || _LIBC
-#  if _LIBC
+#if _LIBC
   if (_IO_fwide (stderr, 0) > 0)
     {
-#   define ALLOCA_LIMIT	2000
+# define ALLOCA_LIMIT 2000
       size_t len = strlen (message) + 1;
       wchar_t *wmessage = NULL;
       mbstate_t st;
       size_t res;
       const char *tmp;
+      bool use_malloc = false;
 
-      do
+      while (1)
 	{
-	  if (len < ALLOCA_LIMIT)
+	  if (__libc_use_alloca (len * sizeof (wchar_t)))
 	    wmessage = (wchar_t *) alloca (len * sizeof (wchar_t));
 	  else
 	    {
-	      if (wmessage != NULL && len / 2 < ALLOCA_LIMIT)
+	      if (!use_malloc)
 		wmessage = NULL;
 
 	      wchar_t *p = (wchar_t *) realloc (wmessage,
@@ -201,62 +157,69 @@ error_tail (int status, int errnum, const char *message, va_list args)
 		  return;
 		}
 	      wmessage = p;
+	      use_malloc = true;
 	    }
 
 	  memset (&st, '\0', sizeof (st));
 	  tmp = message;
+
+	  res = mbsrtowcs (wmessage, &tmp, len, &st);
+	  if (res != len)
+	    break;
+
+	  if (__builtin_expect (len >= SIZE_MAX / 2, 0))
+	    {
+	      /* This really should not happen if everything is fine.  */
+	      res = (size_t) -1;
+	      break;
+	    }
+
+	  len *= 2;
 	}
-      while ((res = mbsrtowcs (wmessage, &tmp, len, &st)) == len);
 
       if (res == (size_t) -1)
-	/* The string cannot be converted.  */
-	wmessage = (wchar_t *) L"???";
+	{
+	  /* The string cannot be converted.  */
+	  if (use_malloc)
+	    {
+	      free (wmessage);
+	      use_malloc = false;
+	    }
+	  wmessage = (wchar_t *) L"???";
+	}
 
       __vfwprintf (stderr, wmessage, args);
+
+      if (use_malloc)
+	free (wmessage);
     }
   else
-#  endif
+#endif
     vfprintf (stderr, message, args);
-# else
-  _doprnt (message, args, stderr);
-# endif
   va_end (args);
 
   ++error_message_count;
   if (errnum)
     print_errno_message (errnum);
-# if _LIBC
-  if (_IO_fwide (stderr, 0) > 0)
-    putwc (L'\n', stderr);
-  else
-# endif
-    putc ('\n', stderr);
+#if _LIBC
+  __fxprintf (NULL, "\n");
+#else
+  putc ('\n', stderr);
+#endif
   fflush (stderr);
   if (status)
     exit (status);
 }
-#endif
 
 
 /* Print the program name and error message MESSAGE, which is a printf-style
    format string with optional args.
    If ERRNUM is nonzero, print its corresponding system error message.
    Exit with status STATUS if it is nonzero.  */
-/* VARARGS */
 void
-#if defined VA_START && __STDC__
 error (int status, int errnum, const char *message, ...)
-#else
-error (status, errnum, message, va_alist)
-     int status;
-     int errnum;
-     char *message;
-     va_dcl
-#endif
 {
-#ifdef VA_START
   va_list args;
-#endif
 
 #if defined _LIBC && defined __libc_ptf_call
   /* We do not want this call to be cut short by a thread
@@ -275,27 +238,14 @@ error (status, errnum, message, va_alist)
   else
     {
 #if _LIBC
-      if (_IO_fwide (stderr, 0) > 0)
-	__fwprintf (stderr, L"%s: ", program_name);
-      else
+      __fxprintf (NULL, "%s: ", program_name);
+#else
+      fprintf (stderr, "%s: ", program_name);
 #endif
-	fprintf (stderr, "%s: ", program_name);
     }
 
-#ifdef VA_START
-  VA_START (args, message);
+  va_start (args, message);
   error_tail (status, errnum, message, args);
-#else
-  fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8);
-
-  ++error_message_count;
-  if (errnum)
-    print_errno_message (errnum);
-  putc ('\n', stderr);
-  fflush (stderr);
-  if (status)
-    exit (status);
-#endif
 
 #ifdef _LIBC
   _IO_funlockfile (stderr);
@@ -310,22 +260,10 @@ error (status, errnum, message, va_alist)
 int error_one_per_line;
 
 void
-#if defined VA_START && __STDC__
 error_at_line (int status, int errnum, const char *file_name,
 	       unsigned int line_number, const char *message, ...)
-#else
-error_at_line (status, errnum, file_name, line_number, message, va_alist)
-     int status;
-     int errnum;
-     const char *file_name;
-     unsigned int line_number;
-     char *message;
-     va_dcl
-#endif
 {
-#ifdef VA_START
   va_list args;
-#endif
 
   if (error_one_per_line)
     {
@@ -359,37 +297,22 @@ error_at_line (status, errnum, file_name, line_number, message, va_alist)
   else
     {
 #if _LIBC
-      if (_IO_fwide (stderr, 0) > 0)
-	__fwprintf (stderr, L"%s: ", program_name);
-      else
+      __fxprintf (NULL, "%s:", program_name);
+#else
+      fprintf (stderr, "%s:", program_name);
 #endif
-	fprintf (stderr, "%s:", program_name);
     }
 
-  if (file_name != NULL)
-    {
 #if _LIBC
-      if (_IO_fwide (stderr, 0) > 0)
-	__fwprintf (stderr, L"%s:%d: ", file_name, line_number);
-      else
+  __fxprintf (NULL, file_name != NULL ? "%s:%d: " : " ",
+	      file_name, line_number);
+#else
+  fprintf (stderr, file_name != NULL ? "%s:%d: " : " ",
+	   file_name, line_number);
 #endif
-	fprintf (stderr, "%s:%d: ", file_name, line_number);
-    }
 
-#ifdef VA_START
-  VA_START (args, message);
+  va_start (args, message);
   error_tail (status, errnum, message, args);
-#else
-  fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8);
-
-  ++error_message_count;
-  if (errnum)
-    print_errno_message (errnum);
-  putc ('\n', stderr);
-  fflush (stderr);
-  if (status)
-    exit (status);
-#endif
 
 #ifdef _LIBC
   _IO_funlockfile (stderr);