USE_BUILTIN_FFS   599 oshmem/mca/memheap/ptmalloc/malloc.c #ifndef USE_BUILTIN_FFS
USE_BUILTIN_FFS  1239 oshmem/mca/memheap/ptmalloc/malloc.c #if USE_BUILTIN_FFS
USE_BUILTIN_FFS  2647 oshmem/mca/memheap/ptmalloc/malloc.c #if  USE_BUILTIN_FFS