src/llvm/tools/clang/test/CodeGenCXX/copy-constructor-elim.cpp

   1 // RUN: %clang_cc1 -emit-llvm -o %t %s
   2 // RUN: grep "_ZN1CC1ERK1C" %t | count 0
   3 // RUN: grep "_ZN1SC1ERK1S" %t | count 0
   4
   5 extern "C" int printf(...);
   6
   7
   8 struct C {
   9   C() : iC(6) {printf("C()\n"); }
  10   C(const C& c) { printf("C(const C& c)\n"); }
  11   int iC;
  12 };
  13
  14 C foo() {
  15   return C();
  16 };
  17
  18 class X { // ...
  19 public:
  20   X(int) {}
  21   X(const X&, int i = 1, int j = 2, C c = foo()) {
  22     printf("X(const X&, %d, %d, %d)\n", i, j, c.iC);
  23   }
  24 };
  25
  26
  27 struct S {
  28   S();
  29 };
  30
  31 S::S() { printf("S()\n"); }
  32
  33 void Call(S) {};
  34
  35 int main() {
  36   X a(1);
  37   X b(a, 2);
  38   X c = b;
  39   X d(a, 5, 6);
  40   S s;
  41   Call(s);
  42 }