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e9dede06e5
Configure assumes that if malloc(0) returns null then calloc(0,n) also does. On some old platforms (SunOS4) malloc behaves as expected (as determined by AC_FUNC_MALLOC) but calloc doesn't. Test for this at configure time and activate the replacement function if found, plus handle this case in rpl_calloc.
58 lines
1.4 KiB
C
58 lines
1.4 KiB
C
/*
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* Copyright (c) 2017 Darren Tucker (dtucker at zip com au).
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "config.h"
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#undef malloc
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#undef calloc
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#undef realloc
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#include <sys/types.h>
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#include <stdlib.h>
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#if defined(HAVE_MALLOC) && HAVE_MALLOC == 0
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void *
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rpl_malloc(size_t size)
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{
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if (size == 0)
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size = 1;
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return malloc(size);
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}
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#endif
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#if defined(HAVE_CALLOC) && HAVE_CALLOC == 0
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void *
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rpl_calloc(size_t nmemb, size_t size)
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{
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if (nmemb == 0)
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nmemb = 1;
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if (size == 0)
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size = 1;
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return calloc(nmemb, size);
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}
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#endif
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#if defined (HAVE_REALLOC) && HAVE_REALLOC == 0
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void *
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rpl_realloc(void *ptr, size_t size)
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{
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if (size == 0)
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size = 1;
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if (ptr == 0)
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return malloc(size);
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return realloc(ptr, size);
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}
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#endif
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