}
# endif
expansion_slop = WORDS_TO_BYTES(min_words_allocd()) + 4*MAXHINCR*HBLKSIZE;
- if (GC_last_heap_addr == 0 && !((word)space & SIGNB)
+ if ((GC_last_heap_addr == 0 && !((word)space & SIGNB))
|| (GC_last_heap_addr != 0 && GC_last_heap_addr < (ptr_t)space)) {
/* Assume the heap is growing up */
GC_greatest_plausible_heap_addr =