+#define _GNU_SOURCE
#include <stdlib.h>
#include <string.h>
#include <limits.h>
if (adjust_size(&n) < 0) return 0;
if (n > MMAP_THRESHOLD) {
- size_t len = n + PAGE_SIZE - 1 & -PAGE_SIZE;
+ size_t len = n + OVERHEAD + PAGE_SIZE - 1 & -PAGE_SIZE;
char *base = __mmap(0, len, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
if (base == (void *)-1) return 0;
size_t oldlen = n0 + extra;
size_t newlen = n + extra;
/* Crash on realloc of freed chunk */
- if ((uintptr_t)base < mal.brk) *(char *)0=0;
+ if ((uintptr_t)base < mal.brk) *(volatile char *)0=0;
if (newlen < PAGE_SIZE && (new = malloc(n))) {
memcpy(new, p, n-OVERHEAD);
free(p);
char *base = (char *)self - extra;
size_t len = CHUNK_SIZE(self) + extra;
/* Crash on double free */
- if ((uintptr_t)base < mal.brk) *(char *)0=0;
+ if ((uintptr_t)base < mal.brk) *(volatile char *)0=0;
__munmap(base, len);
return;
}