| // Test to make sure basic initialization order errors are caught. |
| |
| // RUN: %clangxx_asan -O0 %s %p/Helpers/initialization-bug-extra2.cc -o %t |
| // RUN: ASAN_OPTIONS=check_initialization_order=true not %t 2>&1 | FileCheck %s |
| |
| // Do not test with optimization -- the error may be optimized away. |
| |
| // FIXME: https://code.google.com/p/address-sanitizer/issues/detail?id=186 |
| // XFAIL: darwin |
| |
| #include <cstdio> |
| |
| // The structure of the test is: |
| // "x", "y", "z" are dynamically initialized globals. |
| // Value of "x" depends on "y", value of "y" depends on "z". |
| // "x" and "z" are defined in this TU, "y" is defined in another one. |
| // Thus we shoud stably report initialization order fiasco independently of |
| // the translation unit order. |
| |
| int initZ() { |
| return 5; |
| } |
| int z = initZ(); |
| |
| // 'y' is a dynamically initialized global residing in a different TU. This |
| // dynamic initializer will read the value of 'y' before main starts. The |
| // result is undefined behavior, which should be caught by initialization order |
| // checking. |
| extern int y; |
| int __attribute__((noinline)) initX() { |
| return y + 1; |
| // CHECK: {{AddressSanitizer: initialization-order-fiasco}} |
| // CHECK: {{READ of size .* at 0x.* thread T0}} |
| // CHECK: {{0x.* is located 0 bytes inside of global variable .*(y|z).*}} |
| } |
| |
| // This initializer begins our initialization order problems. |
| static int x = initX(); |
| |
| int main() { |
| // ASan should have caused an exit before main runs. |
| printf("PASS\n"); |
| // CHECK-NOT: PASS |
| return 0; |
| } |