https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85696
gcc-bugzilla at zulan dot net changed: What |Removed |Added ---------------------------------------------------------------------------- Attachment #44085|0 |1 is obsolete| | --- Comment #1 from gcc-bugzilla at zulan dot net --- Created attachment 44086 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44086&action=edit pologies, wrong gcc version. The error of 8.1.0 is exactly the same though.