[LLVMbugs] [Bug 10093] New: clang disallows to instantiate template for typedefed class

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=10093

           Summary: clang disallows to instantiate template for typedefed
                    class
           Product: clang
           Version: trunk
          Platform: Other
        OS/Version: FreeBSD
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: yuri at tsoft.com
                CC: llvmbugs at cs.uiuc.edu, dgregor at apple.com


Created an attachment (id=6701)
 --> (http://llvm.org/bugs/attachment.cgi?id=6701)
testcase

I get such warning with typedef.
st1.C:14:21: warning: qualifier in explicit instantiation of 'Cls<int>::less'
requires a template-id (a typedef is not permitted)
template bool TCls::less(const TCls*, const TCls*);

And no warning without the typedef.

There is no danger in allowing such instantiation. This should be allowed for
better flexibility of templateed code.

gcc (as of 4.6.0) allows such instantiation.

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