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From: "nacitar at ubercpp dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/67991] New: Pointer to function with internal linkage not being allowed, when it should be
Date: Fri, 16 Oct 2015 17:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67991

            Bug ID: 67991
           Summary: Pointer to function with internal linkage not being
                    allowed, when it should be
           Product: gcc
           Version: 5.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: nacitar at ubercpp dot com
  Target Milestone: ---

Created attachment 36528
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36528&action=edit
test driver

Returning a function pointer from a constexpr function is leading to an error,
in a context where using the function pointer directly does in fact work.  I
don't see why it should be different.

I already asked the isocpp group about this:

https://groups.google.com/a/isocpp.org/forum/embed/?place=forum/std-discussion&showsearch=true&showpopout=true&parenturl=https://isocpp.org/forums/iso-c-standard-discussion#!topic/std-discussion/OKfPmu95en4

They stated: "This is a GCC bug. Pointers to functions with internal linkage
are fine since C++11."