1// Test to make sure basic initialization order errors are caught.
2// Check that on Linux initialization order bugs are caught
3// independently on order in which we list source files (if we specify
4// strict init-order checking).
5
6// RUN: %clangxx_asan -O0 %s %p/../Helpers/initialization-bug-extra.cc -o %t
7// RUN: ASAN_OPTIONS=strict_init_order=true not %run %t 2>&1 | FileCheck %s
8// RUN: %clangxx_asan -O0 %p/../Helpers/initialization-bug-extra.cc %s -o %t
9// RUN: ASAN_OPTIONS=strict_init_order=true not %run %t 2>&1 | FileCheck %s
10
11// Do not test with optimization -- the error may be optimized away.
12
13#include <cstdio>
14
15// 'y' is a dynamically initialized global residing in a different TU.  This
16// dynamic initializer will read the value of 'y' before main starts.  The
17// result is undefined behavior, which should be caught by initialization order
18// checking.
19extern int y;
20int __attribute__((noinline)) initX() {
21  return y + 1;
22  // CHECK: {{AddressSanitizer: initialization-order-fiasco}}
23  // CHECK: {{READ of size .* at 0x.* thread T0}}
24  // CHECK: {{#0 0x.* in .*initX.* .*initialization-bug-any-order.cc:}}[[@LINE-3]]
25  // CHECK: {{0x.* is located 0 bytes inside of global variable .*y.*}}
26}
27
28// This initializer begins our initialization order problems.
29static int x = initX();
30
31int main() {
32  // ASan should have caused an exit before main runs.
33  printf("PASS\n");
34  // CHECK-NOT: PASS
35  return 0;
36}
37