https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96333
Bug ID: 96333 Summary: Regression on concepts constraint checking Product: gcc Version: 10.2.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: joel.falcou at lri dot fr Target Milestone: --- The following code : https://godbolt.org/z/ah6ssM exhibits a regression so that not having const& on one of the g overload make them ambiguous. g++ 10.1 and clang 10 compiles both version without error. The workaround to add const& is OK but I think this is not normal behavior.