Mercurial > gnulib
view lib/xmalloca.h @ 40140:81f075eaa990
ptsname_r: Work around bug on Android 4.3.
* m4/ptsname_r.m4 (gl_FUNC_PTSNAME_R): Define
HAVE_ESSENTIALLY_WORKING_PTSNAME_R. Test whether the return value is
correct.
* lib/ptsname_r.c (__ptsname_r): If HAVE_ESSENTIALLY_WORKING_PTSNAME_R
is defined, just fix the return value.
* doc/glibc-functions/ptsname_r.texi: Mention the Android bug. Reword:
The behaviour of musl libc is nothing to be "fixed", since it is
compliant with the next POSIX standard.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sat, 26 Jan 2019 15:23:19 +0100 |
parents | b06060465f09 |
children |
line wrap: on
line source
/* Safe automatic memory allocation with out of memory checking. Copyright (C) 2003, 2005, 2007, 2009-2019 Free Software Foundation, Inc. Written by Bruno Haible <bruno@clisp.org>, 2003. 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 3 of the License, 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, see <https://www.gnu.org/licenses/>. */ #ifndef _XMALLOCA_H #define _XMALLOCA_H #include "malloca.h" #include "xalloc.h" #ifdef __cplusplus extern "C" { #endif /* xmalloca(N) is a checking safe variant of alloca(N). It allocates N bytes of memory allocated on the stack, that must be freed using freea() before the function returns. Upon failure, it exits with an error message. */ #if HAVE_ALLOCA # define xmalloca(N) \ ((N) < 4032 - (2 * sa_alignment_max - 1) \ ? (void *) (((uintptr_t) (char *) alloca ((N) + 2 * sa_alignment_max - 1) \ + (2 * sa_alignment_max - 1)) \ & ~(uintptr_t)(2 * sa_alignment_max - 1)) \ : xmmalloca (N)) extern void * xmmalloca (size_t n); #else # define xmalloca(N) \ xmalloc (N) #endif /* xnmalloca(N,S) is an overflow-safe variant of xmalloca (N * S). It allocates an array of N objects, each with S bytes of memory, on the stack. S must be positive and N must be nonnegative. The array must be freed using freea() before the function returns. Upon failure, it exits with an error message. */ #if HAVE_ALLOCA /* Rely on xmalloca (SIZE_MAX) calling xalloc_die (). */ # define xnmalloca(n, s) \ xmalloca (xalloc_oversized ((n), (s)) ? (size_t) (-1) : (n) * (s)) #else # define xnmalloca(n, s) \ xnmalloc ((n), (s)) #endif #ifdef __cplusplus } #endif #endif /* _XMALLOCA_H */