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-rw-r--r--misc/error.c77
1 files changed, 45 insertions, 32 deletions
diff --git a/misc/error.c b/misc/error.c
index 2501583366..5f00ae97de 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, 2000-2004, 2005 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
@@ -74,6 +73,7 @@ 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.
@@ -158,14 +158,10 @@ print_errno_message (int errnum)
#endif
#if _LIBC
- if (_IO_fwide (stderr, 0) > 0)
- {
- __fwprintf (stderr, L": %s", s);
- return;
- }
-#endif
-
+ __fxprintf (NULL, ": %s", L": %s", s);
+#else
fprintf (stderr, ": %s", s);
+#endif
}
#ifdef VA_START
@@ -182,14 +178,15 @@ error_tail (int status, int errnum, const char *message, va_list args)
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,
@@ -201,18 +198,38 @@ 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 reallyy 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);
+ wmessage = (wchar_t *) L"???";
+ }
__vfwprintf (stderr, wmessage, args);
+
+ if (use_malloc)
+ free (wmessage);
}
else
# endif
@@ -226,11 +243,10 @@ error_tail (int status, int errnum, const char *message, va_list args)
if (errnum)
print_errno_message (errnum);
# if _LIBC
- if (_IO_fwide (stderr, 0) > 0)
- putwc (L'\n', stderr);
- else
+ __fxprintf (NULL, "\n", L"\n");
+# else
+ putc ('\n', stderr);
# endif
- putc ('\n', stderr);
fflush (stderr);
if (status)
exit (status);
@@ -275,11 +291,10 @@ 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: ", L"%s: ", program_name);
+#else
+ fprintf (stderr, "%s: ", program_name);
#endif
- fprintf (stderr, "%s: ", program_name);
}
#ifdef VA_START
@@ -359,21 +374,19 @@ 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:", L"%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, "%s:%d: ", L"%s:%d: ", file_name, line_number);
+#else
+ fprintf (stderr, "%s:%d: ", file_name, line_number);
#endif
- fprintf (stderr, "%s:%d: ", file_name, line_number);
}
#ifdef VA_START