test/CodeGenCXX/empty-union.cpp - clang - Git at Google

 // RUN: %clang_cc1 -emit-llvm -o - %s

 union sigval { };

 union sigval sigev_value;

 int main()
 {
   return sizeof(sigev_value);
 }
	// RUN: %clang_cc1 -emit-llvm -o - %s

	union sigval { };

	union sigval sigev_value;

	int main()
	{
	return sizeof(sigev_value);
	}