https://bugs.llvm.org/show_bug.cgi?id=38109
Bug ID: 38109
Summary: Explicit specialization after instantiation error
Product: clang
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: C++
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Clang does not accept code which CL.exe accepts. The example works if I remove
the dllexport.
C:\dev\src\playground\cpp>C:\dev\src\llvm\build\releaseprefix\msbuild-bin\cl.exe
explicit_instantiation.cpp
explicit_instantiation.cpp
explicit_instantiation.cpp(12,21): error: explicit specialization of 's_foo'
after instantiation
template<> B* A<B>::s_foo = nullptr;
^
explicit_instantiation.cpp(5,15): note: implicit instantiation first required
here
static T* s_foo;
^
1 error generated.
C:\dev\src\playground\cpp>cl.exe explicit_instantiation.cpp
Microsoft (R) C/C++ Optimizing Compiler Version 19.14.26430 for x64
Copyright (C) Microsoft Corporation. All rights reserved.
explicit_instantiation.cpp
Microsoft (R) Incremental Linker Version 14.14.26430.0
Copyright (C) Microsoft Corporation. All rights reserved.
/out:explicit_instantiation.exe
explicit_instantiation.obj
Creating library explicit_instantiation.lib and object
explicit_instantiation.exp
C:\dev\src\playground\cpp>type explicit_instantiation.cpp
template <typename T>
class A
{
static T* s_foo;
};
class __declspec(dllexport) B : public A<B>
{
};
template<> B* A<B>::s_foo = nullptr;
int main()
{
return 0;
}
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