https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96948
--- Comment #2 from Kirill Müller <krlmlr+gcc at mailbox dot org> --- $ gcc -v Using built-in specs. COLLECT_GCC=C:\rtools40_\mingw64\bin\gcc.exe COLLECT_LTO_WRAPPER=C:/rtools40_/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/8.3.0/lto-wrapper.exe Target: x86_64-w64-mingw32 Configured with: ../gcc-8.3.0/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 --disable-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 --with-libiconv --with-system-zlib --with-gmp=/mingw64 --with-mpfr=/mingw64 --with-mpc=/mingw64 --with-isl=/mingw64 --with-pkgversion='Built by Jeroen for the R-project' --with-bugurl=https://github.com/r-windows --with-gnu-as --with-gnu-ld Thread model: posix gcc version 8.3.0 (Built by Jeroen for the R-project)