https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102107
--- Comment #4 from Paul Clarke <pc at us dot ibm.com> --- Created attachment 51372 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51372&action=edit preprocessed source (yet a bit smaller) I was able to remove one of the cases of the switch statement in the function which exhibits the issue. Interestingly, removing any of the others hides the issue.
