[LLVMbugs] [Bug 20033] New: template argument deduction can deduce 'auto' or 'decltype(auto)' from a return type

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=20033

            Bug ID: 20033
           Summary: template argument deduction can deduce 'auto' or
                    'decltype(auto)' from a return type
           Product: clang
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++1y
          Assignee: unassignedclangbugs at nondot.org
          Reporter: richard-llvm at metafoo.co.uk
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Consider:

  template<typename T> T f();
  template<> auto f() { return 0; }
  template<> decltype(auto) f() { return 0; }

The second and third lines here are (presumably) ill-formed, because they
deduce a template argument of 'auto' or 'decltype(auto)'. (This is probably a
duplicate of PR20032, which seems to fail for the same reason.)

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