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; 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 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
