http://llvm.org/bugs/show_bug.cgi?id=18806
Bug ID: 18806
Summary: Precompiled header with alias template and decltype in
a template class crash clang
Product: clang
Version: trunk
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: P
Component: C++11
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
Compiling the two simple files below with
clang++ -std=c++11 -x c++-header -o test.hpp.pch test.hpp
clang++ -std=c++11 -include-pch test.hpp.pch -include test.hpp test.cpp
triggers a crash caused by the following assert error
llvm/tools/clang/lib/AST/ASTContext.cpp:3046: clang::QualType
clang::ASTContext::getSubstTemplateTypeParmType(const
clang::TemplateTypeParmType*, clang::QualType) const: Assertion
`Replacement.isCanonical() && "replacement types must always be canonical"'
failed.
-- test.hpp --
template <typename T>
using Id = T;
template <typename X>
struct Class1 {
private:
template <typename Y,
typename = decltype(Y())>
struct Nested1;
};
template <typename A>
struct Class2 {
template <typename B,
typename = Id<decltype(B())>>
struct Nested2;
};
-- test.cpp --
Class2<char> test;
--
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