https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117777
--- Comment #2 from Gaius Mulley <gaius at gcc dot gnu.org> --- Created attachment 59702 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59702&action=edit Proposed fix Here is the proposed fix. The bug was a missing grammar optional term to allow a ':' AsmList after the ConstExpression. All passes have been altered to allow ':' AsmList to be optional.