MCHUNK_SIZE      2098 src/utils/dlmalloc.c   ((MCHUNK_SIZE + CHUNK_ALIGN_MASK) & ~CHUNK_ALIGN_MASK)
MCHUNK_SIZE      2999 src/utils/dlmalloc.c 		        ((MCHUNK_SIZE      & (MCHUNK_SIZE-SIZE_T_ONE))      != 0) ||