See bug 1515865 comment 9. This is another wrong-code bug in -fstack-clash-protection on i686. It causes miscompilation of pcre and pcre2. Filing downstream for tracking purposes. The upstream bug has a reproducer.
Fixed upstream. Builds spinning for f27 and rawhide.
Thanks. I confirm gcc-8.0.1-0.9.fc28 works for me.
gcc-7.3.1-5.fc27 has been submitted as an update to Fedora 27. https://bodhi.fedoraproject.org/updates/FEDORA-2018-dd08df5b34
gcc-7.3.1-5.fc27 has been pushed to the Fedora 27 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2018-dd08df5b34
gcc-7.3.1-5.fc27 has been pushed to the Fedora 27 stable repository. If problems still persist, please make note of it in this bug report.