clang/test/SemaTemplate/implicit-instantiation-1.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s
   2 template<typename T, typename U>
   3 struct X {
   4   T f(T x, U y) { return x + y; }
   5
   6   unsigned g(T x, U y) { return sizeof(f(x, y)); }
   7 };
   8
   9 void test(X<int, int> *xii, X<int*, int> *xpi, X<int, int*> *xip) {
  10   (void)xii->f(1, 2);
  11   (void)xpi->f(0, 2);
  12   (void)sizeof(xip->f(2, 0)); // okay: does not instantiate
  13   (void)xip->g(2, 0); // okay: does not instantiate
  14 }
  15
  16 template<typename T, typename U>
  17 T add(T t, U u) {
  18   return t + u; // expected-error{{invalid operands}}
  19 }
  20
  21 void test_add(char *cp, int i, int *ip) {
  22   char* cp2 = add(cp, i);
  23   add(cp, cp); // expected-note{{instantiation of}}
  24   (void)sizeof(add(ip, ip));
  25 }