https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55212
--- Comment #228 from John Paul Adrian Glaubitz <glaubitz at physik dot fu-berlin.de> --- (In reply to John Paul Adrian Glaubitz from comment #227) > (In reply to Kazumoto Kojima from comment #226) > > Created attachment 59044 [details] > > a patch to fix patch 59034 > > > > Looks the use of the raw R0 pattern in 59034 confuses the def-use analysis > > and RA. > > I guess it could be the cause of the segfault in c#225. > > Thanks, I'll add that patch and try again. I can confirm that the patch 59044 fixes the patch 59034 and both patches together fix gccgo. I'll have a go at Ada now. Great to see that we're making so much progress!