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// REQUIRES: asan-64-bits
// RUN: %clangxx_asan -O3 %s -o %t
// RUN: %env_asan_opts=poison_array_cookie=1 not %run %t 2>&1 | FileCheck %s --check-prefix=COOKIE
// RUN: %env_asan_opts=poison_array_cookie=0 not %run %t 2>&1 | FileCheck %s --check-prefix=NO_COOKIE
// UNSUPPORTED: ios
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
int dtor_counter;
struct C {
int x;
~C() {
dtor_counter++;
fprintf(stderr, "DTOR %d\n", dtor_counter);
}
};
__attribute__((noinline)) void Delete(C *c) { delete[] c; }
__attribute__((no_sanitize_address)) void Write42ToCookie(C *c) {
long *p = reinterpret_cast<long*>(c);
p[-1] = 42;
}
int main(int argc, char **argv) {
C *buffer = new C[argc];
delete [] buffer;
Write42ToCookie(buffer);
delete [] buffer;
// COOKIE: DTOR 1
// COOKIE-NOT: DTOR 2
// COOKIE: AddressSanitizer: loaded array cookie from free-d memory
// COOKIE: AddressSanitizer: attempting double-free
// NO_COOKIE: DTOR 1
// NO_COOKIE: DTOR 43
// NO_COOKIE-NOT: DTOR 44
// NO_COOKIE-NOT: AddressSanitizer: loaded array cookie from free-d memory
// NO_COOKIE: AddressSanitizer: attempting double-free
}
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