compiler-rt/test/asan/TestCases/Linux/preinit_test.cpp

   1 // RUN: %clangxx -DFUNC=zzzz %s -shared -o %dynamiclib -fPIC
   2 // RUN: %clangxx_asan -DFUNC=main %s -o %t %ld_flags_rpath_exe
   3 // RUN: %run %t
   4
   5 // GNU driver doesn't handle .so files properly.
   6 // REQUIRES: Clang
   7
   8 // This test ensures that we call __asan_init early enough.
   9 // We build a shared library w/o asan instrumentation
  10 // and the binary with asan instrumentation.
  11 // Both files include the same header (emulated by -DFUNC here)
  12 // with C++ template magic which runs global initializer at library load time.
  13 // The function get() is instrumented with asan, but called
  14 // before the usual constructors are run.
  15 // So, we must make sure that __asan_init is executed even earlier.
  16 //
  17 // See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56393
  18
  19 struct A {
  20   int foo() const { return 0; }
  21 };
  22 A get () { return A(); }
  23 template <class> struct O {
  24   static A const e;
  25 };
  26 template <class T> A const O <T>::e = get();
  27 int FUNC() {
  28   return O<int>::e.foo();
  29 }
  30