1 // RUN: %clang_cc1 -std=c++11 %s -emit-pch -o %t.pch
2 // RUN: %clang_cc1 -fsyntax-only -std=c++11 %s -include-pch %t.pch -verify
3 // expected-no-diagnostics
4 
5 // rdar://12631281
6 // This reduced test case exposed a use-after-free memory bug, which was reliable
7 // reproduced only on guarded malloc (and probably valgrind).
8 
9 #ifndef HEADER
10 #define HEADER
11 
12 template < class _T2> struct  is_convertible;
13 template <> struct is_convertible<int> { typedef int type; };
14 
15 template <class _T1, class _T2> struct  pair {
16   typedef _T1 first_type;
17   typedef _T2 second_type;
18   template <class _U1, class _U2, class = typename is_convertible< first_type>::type>
19     pair(_U1&& , _U2&& ); // expected-note {{candidate}}
20 };
21 
22 template <class _ForwardIterator>
23 pair<_ForwardIterator, _ForwardIterator> __equal_range(_ForwardIterator) {
24   return pair<_ForwardIterator, _ForwardIterator>(0, 0); // expected-error {{no matching constructor}}
25 }
26 
27 template <class _ForwardIterator>
28 pair<_ForwardIterator, _ForwardIterator> equal_range( _ForwardIterator a) {
29   return __equal_range(a); // expected-note {{instantiation}}
30 }
31 
32 class A {
33   pair<int, int> range() {
34     return equal_range(0); // expected-note {{instantiation}}
35   }
36 };
37 
38 #else
39 
40 #endif
41