https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93267
--- Comment #4 from Pilar Latiesa <pilarlatiesa at gmail dot com> --- (In reply to Jonathan Wakely from comment #1) > Please provide the output of 'gcc -v' as requested by > https://gcc.gnu.org/bugs/ Using built-in specs. COLLECT_GCC=g++ Target: x86_64-linux-gnu Configured with: ../gcc-trunk-20200114/configure --prefix=/usr --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu --disable-bootstrap --with-abi=m64 --enable-clocale=gnu --enable-languages=c,c++,fortran --enable-ld=yes --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-linker-build-id --enable-lto --enable-plugins --enable-threads=posix --enable-libatomic --enable-libcilkrts --enable-libgomp Thread model: posix Supported LTO compression algorithms: zlib gcc version 10.0.0 20200111 (experimental) (In reply to Jonathan Wakely from comment #2) > Your testcase is invalid: > > iota.cc: In function 'int main()': > iota.cc:22:6: error: conflicting declaration 'auto beginTest4' > 22 | auto beginTest4 = std::ranges::begin(Test5); // OK > | ^~~~~~~~~~ > iota.cc:19:6: note: previous declaration as 'std::ranges::iota_view<long > unsigned int, long unsigned int>::_Iterator beginTest4' > 19 | auto beginTest4 = std::ranges::begin(Test4); // Error > | ^~~~~~~~~~ Sorry. I composed the testcase from several pieces but didn't test the whole. > It compiles for me if I fix that. Strange. I see the same errors on Compiler Explorer: https://godbolt.org/z/pcq7fS
