https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103824
Bug ID: 103824 Summary: Enum class shadowed by class member in using-enum-declaration Product: gcc Version: 11.1.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: luizfvalle at pm dot me Target Milestone: --- Created attachment 52056 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52056&action=edit Input file (test.cpp) A global enum class is shadowed by a class member of the same name in a using-enum-declaration. Lookup finds the enum class correctly when referred outside the using-enum-declaration. Command and error: g++ -std=c++20 -c test.cpp test.cpp: In member function ‘void C::F()’: test.cpp:7:20: error: ‘E’ is not a type 7 | using enum E; | System type: x86_64-pc-linux-gnu All options given when GCC was configured/built: --prefix=/usr --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=https://bugs.archlinux.org/ --enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++,d --with-isl --with-linker-hash-style=gnu --with-system-zlib --enable-__cxa_atexit --enable-cet=auto --enable-checking=release --enable-clocale=gnu --enable-default-pie --enable-default-ssp --enable-gnu-indirect-function --enable-gnu-unique-object --enable-install-libiberty --enable-linker-build-id --enable-lto --enable-multilib --enable-plugin --enable-shared --enable-threads=posix --disable-libssp --disable-libstdcxx-pch --disable-libunwind-exceptions --disable-werror gdc_include_dir=/usr/include/dlang/gdc Error also happens in godbolt.org's trunk build, and is absent from other compilers.