https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94973
--- Comment #8 from DB <db0451 at gmail dot com> --- > I can reproduce it using x86_64-w64-mingw32-g++ 9.2.1 Thanks again for testing! > I'm not yet convinced this isn't a ranges-v3 bug. I will of course defer to your expertise! It could well be caused by something buried somewhere in range-v3's many layers of supporting code. If it can't be a g++ bug, of course just say the word, and I will just forward this all to them. > As it says on that page, "the first three of which can be obtained from the > output of gcc -v" D'oh. Here we are: $ g++ -v Using built-in specs. COLLECT_GCC=C:\msys64\mingw64\bin\g++.exe COLLECT_LTO_WRAPPER=C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/9.3.0/lto-wrapper.exe Target: x86_64-w64-mingw32 Configured with: ../gcc-9.3.0/configure --prefix=/mingw64 --with-local-prefix=/mingw64/local --build=x86_64-w64-mingw32 --host=x86_64-w64-mingw32 --target=x86_64-w64-mingw32 --with-native-system-header-dir=/mingw64/x86_64-w64-mingw32/include --libexecdir=/mingw64/lib --enable-bootstrap --with-arch=x86-64 --with-tune=generic --enable-languages=c,lto,c++,fortran,ada,objc,obj-c++ --enable-shared --enable-static --enable-libatomic --enable-threads=posix --enable-graphite --enable-fully-dynamic-string --enable-libstdcxx-filesystem-ts=yes --enable-libstdcxx-time=yes --disable-libstdcxx-pch --disable-libstdcxx-debug --disable-isl-version-check --enable-lto --enable-libgomp --disable-multilib --enable-checking=release --disable-rpath --disable-win32-registry --disable-nls --disable-werror --disable-symvers --enable-plugin --with-libiconv --with-system-zlib --with-gmp=/mingw64 --with-mpfr=/mingw64 --with-mpc=/mingw64 --with-isl=/mingw64 --with-pkgversion='Rev2, Built by MSYS2 project' --with-bugurl=https://sourceforge.net/projects/msys2 --with-gnu-as --with-gnu-ld Thread model: posix gcc version 9.3.0 (Rev2, Built by MSYS2 project)
