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coreutils workaround for OpenBSD 3.4 strerror_r bug
From: |
Paul Eggert |
Subject: |
coreutils workaround for OpenBSD 3.4 strerror_r bug |
Date: |
Wed, 04 Aug 2004 13:53:30 -0700 |
User-agent: |
Gnus/5.1006 (Gnus v5.10.6) Emacs/21.3 (gnu/linux) |
Coreutils CVS "make check" failed on OpenBSD 3.4 due to a bug in the
OpenBSD strerror_r implementation. I installed this patch to work
around the bug. I hope the bug is fixed in OpenBSD CVS (they've
reworked strerror_r considerably), but the workaround actually
simplifies the code a bit so it's a win anyway.
2004-08-04 Paul Eggert <address@hidden>
* error.c: Work around bug in OpenBSD 3.4 sterror_r: it
sometimes returns a positive errno value even when it succeeds.
(print_errno_message) [!LIBC]: Fall back on strerror if
__strerror_r fails.
Index: error.c
===================================================================
RCS file: /home/eggert/coreutils/cu/lib/error.c,v
retrieving revision 1.32
retrieving revision 1.33
diff -p -u -r1.32 -r1.33
--- error.c 28 Sep 2003 08:09:28 -0000 1.32
+++ error.c 4 Aug 2004 19:35:24 -0000 1.33
@@ -1,5 +1,5 @@
/* Error handler for noninteractive utilities
- Copyright (C) 1990-1998, 2000-2002, 2003 Free Software Foundation, Inc.
+ Copyright (C) 1990-1998, 2000-2002, 2003, 2004 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
@@ -106,7 +106,7 @@ extern char *program_name;
static void
print_errno_message (int errnum)
{
- char const *s;
+ char const *s = NULL;
#if defined HAVE_STRERROR_R || _LIBC
char errbuf[1024];
@@ -115,15 +115,11 @@ print_errno_message (int errnum)
# else
if (__strerror_r (errnum, errbuf, sizeof errbuf) == 0)
s = errbuf;
- else
- s = 0;
# endif
-#else
- s = strerror (errnum);
#endif
#if !_LIBC
- if (! s)
+ if (! s && ! (s = strerror (errnum)))
s = _("Unknown system error");
#endif
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