1705   char*     brk;                  /* return value from sbrk */  in malloc_extend_top()  local
1728   brk = (char*)(MORECORE (sbrk_size));  in malloc_extend_top()
1731   if (brk == (char*)(MORECORE_FAILURE) ||  in malloc_extend_top()
1732       (brk < old_end && old_top != initial_top))  in malloc_extend_top()
1737   if (brk == old_end /* can just add bytes to current top, unless  in malloc_extend_top()
1747       sbrk_base = brk;  in malloc_extend_top()
1749       sbrked_mem += brk - (char*)old_end;  in malloc_extend_top()
1752     front_misalign = (uintptr_t)chunk2mem(brk) & MALLOC_ALIGN_MASK;  in malloc_extend_top()
1756       brk += correction;  in malloc_extend_top()
1762     correction += pagesz - ((uintptr_t)(brk + sbrk_size) & (pagesz - 1));  in malloc_extend_top()
1773 	new_brk = brk + sbrk_size;  in malloc_extend_top()
1780     top = (mchunkptr)brk;  in malloc_extend_top()
1781     top_size = new_brk - brk + correction;  in malloc_extend_top()
2593   char*     brk;              /* alignment point within p */  in mEMALIGn()  local
2648     brk = (char*)mem2chunk(((uintptr_t)(m + alignment - 1)) & -alignment);  in mEMALIGn()
2649     if ((long)(brk - (char*)(p)) < (long)MINSIZE) brk = brk + alignment;  in mEMALIGn()
2651     newp = (mchunkptr)brk;  in mEMALIGn()
2652     leadsize = brk - (char*)(p);  in mEMALIGn()