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=check_initialization_order=true:strict_init_order=true not %t 2>&1 \
8 // RUN: | FileCheck %s
9 // RUN: %clangxx_asan -O0 %p/../Helpers/initialization-bug-extra.cc %s -o %t
10 // RUN: ASAN_OPTIONS=check_initialization_order=true:strict_init_order=true not %t 2>&1 \
11 // RUN: | FileCheck %s
12
13 // Do not test with optimization -- the error may be optimized away.
14
15 #include <cstdio>
16
17 // 'y' is a dynamically initialized global residing in a different TU. This
18 // dynamic initializer will read the value of 'y' before main starts. The
19 // result is undefined behavior, which should be caught by initialization order
20 // checking.
21 extern int y;
initX()22 int __attribute__((noinline)) initX() {
23 return y + 1;
24 // CHECK: {{AddressSanitizer: initialization-order-fiasco}}
25 // CHECK: {{READ of size .* at 0x.* thread T0}}
26 // CHECK: {{#0 0x.* in .*initX.* .*initialization-bug-any-order.cc:}}[[@LINE-3]]
27 // CHECK: {{0x.* is located 0 bytes inside of global variable .*y.*}}
28 }
29
30 // This initializer begins our initialization order problems.
31 static int x = initX();
32
main()33 int main() {
34 // ASan should have caused an exit before main runs.
35 printf("PASS\n");
36 // CHECK-NOT: PASS
37 return 0;
38 }
39