Mercurial > hg > octave-lojdl > gnulib-hg
view lib/malloc.c @ 14641:9a3f3761a941
getcwd: fix mingw bugs
On mingw, getcwd(NULL,1) succeeds, even though glibc documents that
with a non-zero size, the allocation will not exceed that many bytes.
On mingw, getcwd has the wrong signature. However, we don't have
to check for this if anything else triggers the replacement.
Also, fix a type bug that crept into the original getcwd-lgpl commit.
* m4/getcwd.m4 (gl_FUNC_GETCWD_NULL): Detect one mingw bug.
* doc/posix-functions/getcwd.texi (getcwd): Document the problems.
* lib/getcwd-lgpl.c (rpl_getcwd): Fix return type.
Signed-off-by: Eric Blake <eblake@redhat.com>
author | Eric Blake <eblake@redhat.com> |
---|---|
date | Wed, 27 Apr 2011 20:40:21 -0600 |
parents | a793bed5698a |
children | 8250f2777afc |
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/* malloc() function that is glibc compatible. Copyright (C) 1997-1998, 2006-2007, 2009-2011 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 Free Software Foundation; either version 2, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ /* written by Jim Meyering and Bruno Haible */ #define _GL_USE_STDLIB_ALLOC 1 #include <config.h> /* Only the AC_FUNC_MALLOC macro defines 'malloc' already in config.h. */ #ifdef malloc # define NEED_MALLOC_GNU 1 # undef malloc /* Whereas the gnulib module 'malloc-gnu' defines HAVE_MALLOC_GNU. */ #elif GNULIB_MALLOC_GNU && !HAVE_MALLOC_GNU # define NEED_MALLOC_GNU 1 #endif #include <stdlib.h> #include <errno.h> /* Allocate an N-byte block of memory from the heap. If N is zero, allocate a 1-byte block. */ void * rpl_malloc (size_t n) { void *result; #if NEED_MALLOC_GNU if (n == 0) n = 1; #endif result = malloc (n); #if !HAVE_MALLOC_POSIX if (result == NULL) errno = ENOMEM; #endif return result; }