[llvm-bugs] [Bug 26748] New: clang-cl fails to compile atlctrlw.h header from WTL (delayed template instantiation)

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=26748

            Bug ID: 26748
           Summary: clang-cl fails to compile atlctrlw.h header from WTL
                    (delayed template instantiation)
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
          Assignee: unassignedclangbugs at nondot.org
          Reporter: andreybokhanko at gmail.com
                CC: dgregor at apple.com, llvm-bugs at lists.llvm.org
    Classification: Unclassified

A simple reproducer:

class CCommandBarCtrlBase {
public:
  typedef int CMsgHookMap;
};

template <class T>
class CCommandBarCtrlImpl : public T {
public:
  void foo() {
    void *p = new CMsgHookMap; // "new typename T::CMsgHookMap" works fine
  }
};

void bar() {
  CCommandBarCtrlImpl<CCommandBarCtrlBase> x;
  x.foo();
}


$ clang-cl H:/test.cpp -c
H:/test.cpp(10,19) :  error: unknown type name 'CMsgHookMap'
    void *p = new CMsgHookMap; // "new typename T::CMsgHookMap" works fine
                  ^
1 error generated.


This construct is used in atlctrlw.h header
(https://sourceforge.net/p/wtl/code/HEAD/tree/trunk/wtl/Include/atlctrlw.h#l995):

ATLTRY(s_pmapMsgHook = new CMsgHookMap);


"CMsgHookMap" is declared in a base class
(https://sourceforge.net/p/wtl/code/HEAD/tree/trunk/wtl/Include/atlctrlw.h#l144):

typedef ATL::CSimpleMap<DWORD, _MsgHookData*>   CMsgHookMap;


Yours,
Andrey
=====
Software Engineer
Intel Compiler Team

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