[LLVMbugs] [Bug 7347] New: bad diagnostic for explicit instantiation through a typedef

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=7347

           Summary: bad diagnostic for explicit instantiation through a
                    typedef
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: evan at chromium.org
                CC: llvmbugs at cs.uiuc.edu, dgregor at apple.com


Created an attachment (id=5006)
 --> (http://llvm.org/bugs/attachment.cgi?id=5006)
demo of problem

This came up in Skia, which is a library used by Chrome.

The crux is that
  typedef C<char> CChar;
  template int CChar::x;  // fails
  template int C<char>::x;  // ok
and the error message isn't too helpful.

See attached for code to build with -fsyntax-only.

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