hardened_malloc/test/simple-memory-corruption/invalid_free_unprotected.c

#include <stdlib.h>

#include <sys/mman.h>

__attribute__((optimize(0)))
int main(void) {
    free(malloc(16));
    char *p = mmap(NULL, 4096 * 16, PROT_READ|PROT_WRITE, MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
    if (p == MAP_FAILED) {
        return 1;
    }
    free(p + 4096 * 8);
    return 0;
}