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: %env_asan_opts=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: %env_asan_opts=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. 19 extern int y; 20 int __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. 29 static int x = initX(); 30 31 int main() { 32 // ASan should have caused an exit before main runs. 33 printf("PASS\n"); 34 // CHECK-NOT: PASS 35 return 0; 36 } 37
