test/CodeGenCXX/copy-constructor-elim.cpp

// RUN: clang-cc -emit-llvm -o %t %s &&
// RUN: grep "_ZN1CC1ERK1C" %t | count 0 &&
// RUN: grep "_ZN1SC1ERK1S" %t | count 0 &&
// RUN: true

extern "C" int printf(...);


struct C {
	C() : iC(6) {printf("C()\n"); }
	C(const C& c) { printf("C(const C& c)\n"); }
	int iC;
};

C foo() {
  return C();
};

class X { // ...
public: 
	X(int) {}
	X(const X&, int i = 1, int j = 2, C c = foo()) {
		printf("X(const X&, %d, %d, %d)\n", i, j, c.iC);
	}
};


struct S {
  S();
};

S::S() { printf("S()\n"); }

void Call(S) {};

int main()
{
	X a(1);
	X b(a, 2);
	X c = b;
	X d(a, 5, 6);
        S s;
        Call(s);
}