[Bug c++/77849] New: [regression/4.9] Warning about deprecated enum even when "-Wdeprecated-declarations" is off

["thiago at kde dot org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77849

            Bug ID: 77849
           Summary: [regression/4.9] Warning about deprecated enum even
                    when "-Wdeprecated-declarations" is off
           Product: gcc
           Version: 6.1.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: thiago at kde dot org
  Target Milestone: ---

$ cat test.cpp
class C {
public:
    enum __attribute__((__deprecated__("Do not use"))) MyEnum
    {
        Foo,
        Bar
    };

#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"

    __attribute__((__deprecated__("Really, do not use"))) static const MyEnum
mySpecialEnum = Foo;

#pragma GCC diagnostic pop

};

int main() {
  return C::Foo;
}

$ gcc-6 -fsyntax-only test.cpp
test.cpp:1:7: warning: ‘C::mySpecialEnum’ is deprecated: Really, do not use
[-Wdeprecated-declarations]
test.cpp:12:79: note: declared here

Notes:
* no warnings on GCC 4
* warnings on mySpecialEnum in GCC 5 and 6 (not about the actual enum usage,
about the actual definition of mySpecialEnum)
* no warnings with ICC
* warnings in main on clang 3.7-3.9

Sorry, I don't have a GCC trunk (7) build available.