https://gcc.gnu.org/bugzilla/show_bug.cgi?id=128343
--- Comment #1 from Harald Anlauf <anlauf at gcc dot gnu.org> --- I cannot reproduce the problem running f951 under valgrind. Maybe it will not show up there. In any case, can you attach the failing source, to make sure I did not lose any relevant information (like whitespace not properly visible in comment#0)?
