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1 // RUN: %clang_cc1 -std=c++11 -emit-pch -o %t %s
2 // RUN: %clang_cc1 -std=c++11 -include-pch %t -verify %s
3 
4 // expected-no-diagnostics
5 
6 // Before the patch, this test triggered an assert violation in
7 // ASTContext::getSubstTemplateTypeParmType.
8 
9 #ifndef HEADER_INCLUDED
10 #define HEADER_INCLUDED
11 
12 template <typename T>
13 using Id = T;
14 
15 template <typename X>
16 struct Class1 {
17   template <typename Y, typename = decltype(Y())>
18   struct Nested1;
19 };
20 
21 template <typename A>
22 struct Class2 {
23   template <typename B, typename = Id<decltype(B())>>
24   struct Nested2;
25 };
26 
27 #else
28 
29 Class2<char> test;
30 
31 #endif
32