Merge "Harden CrasherTest::Trap under sanitizers." am: 4a93612d am: 9fdbf07a am: 21ba865e

      result, R"(signal 11 \(SIGSEGV\), code 1 \(SEGV_MAPERR\), fault addr 0x[01]00000000000dead)");

}

// Marked as weak to prevent the compiler from removing the malloc in the caller. In theory, the

// compiler could still clobber the argument register before trapping, but that's unlikely.

__attribute__((weak)) void CrasherTest::Trap(void* ptr ATTRIBUTE_UNUSED) {

  __builtin_trap();

void CrasherTest::Trap(void* ptr) {

  void (*volatile f)(void*) = nullptr;

  __asm__ __volatile__("" : : "r"(f) : "memory");

  f(ptr);

}

TEST_F(CrasherTest, heap_addr_in_register) {

  StartIntercept(&output_fd);

  FinishCrasher();

  AssertDeath(SIGTRAP);

  AssertDeath(SIGSEGV);

  FinishIntercept(&intercept_result);

  ASSERT_EQ(1, intercept_result) << "tombstoned reported failure";