expansion_slop    905 gc/alloc.c         word expansion_slop;	/* Number of bytes by which we expect the */
expansion_slop    943 gc/alloc.c         expansion_slop = WORDS_TO_BYTES(min_words_allocd()) + 4*MAXHINCR*HBLKSIZE;
expansion_slop    949 gc/alloc.c                                (ptr_t)space + bytes + expansion_slop);
expansion_slop    954 gc/alloc.c                                (ptr_t)space - expansion_slop);
expansion_slop    969 gc/alloc.c     	  GC_heapsize + expansion_slop - 2*MAXHINCR*HBLKSIZE;