[LLVMbugs] [Bug 19698] New: __has_feature(cxx_decltype_auto) is not implemented

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=19698

            Bug ID: 19698
           Summary: __has_feature(cxx_decltype_auto) is not implemented
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++1y
          Assignee: unassignedclangbugs at nondot.org
          Reporter: steveire at gmail.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

#if __has_feature(cxx_decltype_auto)
#error Yes
#endif

clang++ -std=c++1y cxx_decltype_auto.cpp reports no error.

Grepping shows only docs.

$ git grep cxx_decltype_auto
docs/LanguageExtensions.rst:Use ``__has_feature(cxx_decltype_auto)`` or
docs/LanguageExtensions.rst:``__has_extension(cxx_decltype_auto)`` to determine
if support

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