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. 4 5 // RUN: %clangxx_asan -m64 -O0 %s %p/../Helpers/initialization-bug-extra.cc\ 6 // RUN: -mllvm -asan-initialization-order -o %t && %t 2>&1 \ 7 // RUN: | %symbolize | FileCheck %s 8 // RUN: %clangxx_asan -m64 -O0 %p/../Helpers/initialization-bug-extra.cc %s\ 9 // RUN: -mllvm -asan-initialization-order -o %t && %t 2>&1 \ 10 // RUN: | %symbolize | FileCheck %s 11 12 // Do not test with optimization -- the error may be optimized away. 13 14 #include <cstdio> 15 16 // 'y' is a dynamically initialized global residing in a different TU. This 17 // dynamic initializer will read the value of 'y' before main starts. The 18 // result is undefined behavior, which should be caught by initialization order 19 // checking. 20 extern int y; 21 int __attribute__((noinline)) initX() { 22 return y + 1; 23 // CHECK: {{AddressSanitizer initialization-order-fiasco}} 24 // CHECK: {{READ of size .* at 0x.* thread T0}} 25 // CHECK: {{#0 0x.* in .*initX.* .*initialization-bug-any-order.cc:22}} 26 // CHECK: {{0x.* is located 0 bytes inside of global variable .*y.*}} 27 } 28 29 // This initializer begins our initialization order problems. 30 static int x = initX(); 31 32 int main() { 33 // ASan should have caused an exit before main runs. 34 printf("PASS\n"); 35 // CHECK-NOT: PASS 36 return 0; 37 } 38
