https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110608
Bug ID: 110608
Summary: error on evaluation of concept three_way_comparable on
recursive variant
Product: gcc
Version: 13.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: walim at gmx dot net
Target Milestone: ---
Created attachment 55508
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55508&action=edit
reduced demo of the error situation (-std=c++20 or higher must be active to
reproduce the error)
A recursiv variant type with its data type as base will not compile in g++ with
-std=c++20 or higher, because of problems evaluating the concept
three_way_comparable
Found on g++ 13.2 on some linux installations and reproduced in compiler
explorer.
(No such error in clang++ and vc)
