https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79789
Bug ID: 79789 Summary: [7 Regression] non-reserved names in <type_traits> Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: libstdc++ Assignee: unassigned at gcc dot gnu.org Reporter: redi at gcc dot gnu.org Target Milestone: --- This fails to compile in C++17 mode: #define T 1 #include <type_traits>