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// RUN: %clang_cc1 -std=c++11 -emit-pch -o %t %s
// RUN: %clang_cc1 -std=c++11 -include-pch %t -verify %s
// expected-no-diagnostics
// Before the patch, this test triggered an assert violation in
// ASTContext::getSubstTemplateTypeParmType.
#ifndef HEADER_INCLUDED
#define HEADER_INCLUDED
template <typename T>
using Id = T;
template <typename X>
struct Class1 {
template <typename Y, typename = decltype(Y())>
struct Nested1;
};
template <typename A>
struct Class2 {
template <typename B, typename = Id<decltype(B())>>
struct Nested2;
};
#else
Class2<char> test;
#endif
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