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// Test to make sure basic initialization order errors are caught.
// RUN: %clangxx_asan %macos_min_target_10_11 -O0 %s %p/Helpers/initialization-bug-extra2.cc -o %t-INIT-ORDER-EXE
// RUN: %env_asan_opts=check_initialization_order=true not %run %t-INIT-ORDER-EXE 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: win32
// The test is expected to fail on OS X Yosemite and older
// UNSUPPORTED: osx-no-ld64-live_support
// UNSUPPORTED: ios
#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).*}}
// CHECK: registered at:
// CHECK: 0x{{.*}} in __asan_register_globals
}
// 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;
}
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