gtest unexpected conversion

Question

I am testing the correct operation of my function

bool Core::IsMeta(void)
{
  return mProc->GetCode(mPC)->Meta;
}

using instructions

EXPECT_EQ(true,CC->IsMeta()); // The instruction pointed to is meta
EXPECT_EQ(false,CC1->IsMeta()); // The instruction pointed to is NOT meta

the tests run OK, but the two tests behave differently: the 'true' case compiles OK, the 'false' case presents with the warning

In file included from /... ./build/gtest/src/gtest/include/gtest/gtest.h:1929:0, from /... .cpp:1: /... .cpp: In member function ‘virtual void ... ::TestBody()’: /... /build/gtest/src/gtest/include/gtest/internal/gtest-internal.h:133:55: warning: converting ‘false’ to pointer type for argument 1 of ‘char testing::internal::IsNullLiteralHelper(testing::internal::Secret*)’ [-Wconversion-null] (sizeof(::testing::internal::IsNullLiteralHelper(x)) == 1) ^

Why gtest wants to convert 'false' to pointer? And why not 'true'? Do I miss something?

Answer 1

For booleans you need to use EXPECT_TRUE() and EXPECT_FALSE() rather than EXPECT_EQ.

Answer 2

The issue is not with gtest, it is actually a gcc bug as stated here.