compiler-rt/test/asan/TestCases/Linux/initialization-bug-any-order.cpp

   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.cpp -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.cpp %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.cpp:}}[[@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 }