--free-is-write=yes is incompatible with custom memory allocator client requests at 0x........: custom_alloc (custom_alloc.c:?) by 0x........: main (custom_alloc.c:?) --free-is-write=yes is incompatible with custom memory allocator client requests at 0x........: custom_alloc (custom_alloc.c:?) by 0x........: make_leak (custom_alloc.c:?) by 0x........: main (custom_alloc.c:?) ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 0 from 0)