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From: "raffael at casagrande dot ch" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug gcov-profile/100744] New: Undefined symbol __gcov_flush when
 building with -fprofile-arcs
Date: Mon, 24 May 2021 14:11:21 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100744

            Bug ID: 100744
           Summary: Undefined symbol __gcov_flush when building with
                    -fprofile-arcs
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: gcov-profile
          Assignee: unassigned at gcc dot gnu.org
          Reporter: raffael at casagrande dot ch
                CC: marxin at gcc dot gnu.org
  Target Milestone: ---

Trying to link the following simple program with `-fprofile-arcs` fails:
------------------
extern "C" void __gcov_flush();

int main() {
  __gcov_flush();
}
------------------
Command line: `g++ source.cc -fprofile-arcs`

This used to work with gcc-10.3. It seems to be a regression of gcc-11.1/tr=
unk?=