DYLD_LIBRARY_PATH & DYLD_INSERT_LIBRARIES not working

Question

I create a .dylib file and compile it:

#define _GNU_SOURCE
#include 
#include 

static void* (*real_malloc)(size_t);

void *mal         


        

Answer 1

If you can recompile the executable being hooked, then I think a simpler solution is to recompile the executable with -force_flat_namespace:

➜  clang slow_leak.c -force_flat_namespace -o slow_leak
➜  DYLD_INSERT_LIBRARIES=malloc_hook.dylib ./slow_leak
leaking
in hooked malloc

More info. This is on OSX 10.12.2 MacOS Sierra.

A comment on HN (2 years later) mentioned DYLD_FORCE_FLAT_NAMESPACE=1 can help in cases where it's not feasible to recompile. I haven't tried it yet, so YMMV.