https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86925
David Binderman <dcb314 at hotmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |marxin at gcc dot gnu.org --- Comment #1 from David Binderman <dcb314 at hotmail dot com> --- Revision 263466 may well be the culprit. Adding marxin for their advice.