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authorPaul Eggert <eggert@cs.ucla.edu>2006-08-09 23:42:26 +0000
committerPaul Eggert <eggert@cs.ucla.edu>2006-08-09 23:42:26 +0000
commit93f90065f31c35780e2dc3d6b7c987677d9bc14e (patch)
treeba198c539d289ba716e4de9f420e58a61e214a84 /lib/error.c
parentd24265f9659d21c8e89f1f21cf3b774c7c120afe (diff)
downloadcoreutils-93f90065f31c35780e2dc3d6b7c987677d9bc14e.tar.xz
Sync from gnulib.
Diffstat (limited to 'lib/error.c')
-rw-r--r--lib/error.c113
1 files changed, 74 insertions, 39 deletions
diff --git a/lib/error.c b/lib/error.c
index 45698be8d..34e836552 100644
--- a/lib/error.c
+++ b/lib/error.c
@@ -1,5 +1,5 @@
/* Error handler for noninteractive utilities
- Copyright (C) 1990-1998, 2000-2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 1990-1998, 2000-2005, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
This program is free software; you can redistribute it and/or modify
@@ -34,6 +34,9 @@
#endif
#ifdef _LIBC
+# include <libintl.h>
+# include <stdbool.h>
+# include <stdint.h>
# include <wchar.h>
# define mbsrtowcs __mbsrtowcs
#endif
@@ -59,6 +62,7 @@ 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.
@@ -122,14 +126,10 @@ print_errno_message (int errnum)
#endif
#if _LIBC
- if (_IO_fwide (stderr, 0) > 0)
- {
- __fwprintf (stderr, L": %s", s);
- return;
- }
-#endif
-
+ __fxprintf (NULL, ": %s", s);
+#else
fprintf (stderr, ": %s", s);
+#endif
}
static void
@@ -140,26 +140,65 @@ error_tail (int status, int errnum, const char *message, va_list args)
{
# define ALLOCA_LIMIT 2000
size_t len = strlen (message) + 1;
- const wchar_t *wmessage = L"out of memory";
- wchar_t *wbuf = (len < ALLOCA_LIMIT
- ? alloca (len * sizeof *wbuf)
- : len <= SIZE_MAX / sizeof *wbuf
- ? malloc (len * sizeof *wbuf)
- : NULL);
-
- if (wbuf)
+ wchar_t *wmessage = NULL;
+ mbstate_t st;
+ size_t res;
+ const char *tmp;
+ bool use_malloc = false;
+
+ while (1)
{
- size_t res;
- mbstate_t st;
- const char *tmp = message;
+ if (__libc_use_alloca (len * sizeof (wchar_t)))
+ wmessage = (wchar_t *) alloca (len * sizeof (wchar_t));
+ else
+ {
+ if (!use_malloc)
+ wmessage = NULL;
+
+ wchar_t *p = (wchar_t *) realloc (wmessage,
+ len * sizeof (wchar_t));
+ if (p == NULL)
+ {
+ free (wmessage);
+ fputws_unlocked (L"out of memory\n", stderr);
+ return;
+ }
+ wmessage = p;
+ use_malloc = true;
+ }
+
memset (&st, '\0', sizeof (st));
- res = mbsrtowcs (wbuf, &tmp, len, &st);
- wmessage = res == (size_t) -1 ? L"???" : wbuf;
+ 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;
+ }
+
+ if (res == (size_t) -1)
+ {
+ /* The string cannot be converted. */
+ if (use_malloc)
+ {
+ free (wmessage);
+ use_malloc = false;
+ }
+ wmessage = (wchar_t *) L"???";
}
__vfwprintf (stderr, wmessage, args);
- if (! (len < ALLOCA_LIMIT))
- free (wbuf);
+
+ if (use_malloc)
+ free (wmessage);
}
else
#endif
@@ -170,11 +209,10 @@ 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");
+#else
+ putc ('\n', stderr);
#endif
- putc ('\n', stderr);
fflush (stderr);
if (status)
exit (status);
@@ -207,11 +245,10 @@ error (int status, int errnum, const char *message, ...)
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);
}
va_start (args, message);
@@ -267,21 +304,19 @@ error_at_line (int status, int errnum, const char *file_name,
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, "%s:%d: ", file_name, line_number);
+#else
+ fprintf (stderr, "%s:%d: ", file_name, line_number);
#endif
- fprintf (stderr, "%s:%d: ", file_name, line_number);
}
va_start (args, message);