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greyfade/memcpy.c

Created January 8, 2015 18:06
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memcpy.c
#include <string.h>
/* force memcpy from old glibc for compatibility */
#ifdef __amd64__
__asm__(".symver memcpy,memcpy@GLIBC_2.2.5");
#else
__asm__(".symver memcpy,memcpy@GLIBC_2.0");
#endif /*__amd64__*/
void *__wrap_memcpy(void *dest, const void *src, size_t n)
{
return memcpy(dest, src, n);
}
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greyfade commented Jan 8, 2015

Add "-Wl,--wrap=memcpy" to your linker flags to enable this hack. Repeat for all affected functions.

Use objdump -T <executable> | grep GLIBC_ to find affected symbols.

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