44 lines
854 B
C
44 lines
854 B
C
/*
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* Copyright (C) 2008 Patrick Ohly
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*/
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#include "libical/icalstrdup.h"
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#if !defined(LIBICAL_MEMFIXES) || defined(EVOLUTION_COMPATIBILITY)
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#if defined(HAVE_CONFIG_H)
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# include <config.h>
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#endif
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#if defined(_GNU_SOURCE) && defined(HAVE_DLFCN_H)
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# include <dlfcn.h>
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# define LIBICAL_RUNTIME_CHECK
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#endif
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#include <string.h>
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char *ical_strdup(const char *x)
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{
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#ifdef LIBICAL_RUNTIME_CHECK
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static enum {
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PATCH_UNCHECKED,
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PATCH_FOUND,
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PATCH_NOT_FOUND
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} patch_status;
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if (patch_status == PATCH_UNCHECKED) {
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patch_status = dlsym(RTLD_NEXT, "ical_memfixes") != NULL ?
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PATCH_FOUND : PATCH_NOT_FOUND;
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}
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if (patch_status == PATCH_FOUND) {
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/* patch applied, no need to copy */
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return (char *)x;
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}
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#endif
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return x ? strdup(x) : NULL;
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}
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#endif /* !LIBICAL_MEMFIXES */
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