[Bug c++/58045] New: gcc 4.8 produces an undefined reference to an inline function

[rafael.espindola at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58045

            Bug ID: 58045
           Summary: gcc 4.8 produces an undefined reference to an inline
                    function
           Product: gcc
           Version: 4.8.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: rafael.espindola at gmail dot com
                CC: hubicka at gcc dot gnu.org, jason at redhat dot com

Created attachment 30582
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30582&action=edit
testcase

This may or may not be a duplicate of bug 53808.

When compiling this testcase with

cc1plus llvm-ar.ii -quiet -std=c++11 -fprofile-arcs -o test.s -O2

The produced assembly has an undefined reference to
_ZNK4llvm14raw_fd_ostream11current_posEv, but this function is defined inline:

virtual uint64_t current_pos() const {
return pos;
}

This causes the link to fail when building with -fvisibility-inlines-hidden and
shared libraries.

GCC should avoid devirtualizing or emit a copy of the callee.