https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80716
--- Comment #1 from Matt Heck <breakpoint at runbox dot com> --- Oh, I almost forgot the important part: Substituting commas for those backslashes DOES resolve the problem, but ALL THREE must be replaced. Substituting \\ for \ DOES NOT resolve the problem. Substituting \t for \ DOES resolve the problem. Substituting "\ " for "\" DOES NOT resolve the problem.