https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67063
--- Comment #2 from HEMMI, Shigeru <textdirected at gmail dot com> --- Thanks for the reply. My output of 'gfortran -v' is: PS E:\tmp> gfortran -v Using built-in specs. COLLECT_GCC=E:\mingw-w64\mingw64\bin\gfortran.exe COLLECT_LTO_WRAPPER=E:/mingw-w64/mingw64/bin/../libexec/gcc/x86_64-w64-mingw32/5.1.0/lto-wrapper.exe Target: x86_64-w64-mingw32 Configured with: ../../../src/gcc-5.1.0/configure --host=x86_64-w64-mingw32 --build=x86_64-w64-mingw32 --target=x86_64- w64-mingw32 --prefix=/mingw64 --with-sysroot=/c/mingw510/x86_64-510-posix-seh-rt_v4-rev0/mingw64 --with-gxx-include-dir =/mingw64/x86_64-w64-mingw32/include/c++ --enable-shared --enable-static --disable-multilib --enable-languages=ada,c,c+ +,fortran,objc,obj-c++,lto --enable-libstdcxx-time=yes --enable-threads=posix --enable-libgomp --enable-libatomic --ena ble-lto --enable-graphite --enable-checking=release --enable-fully-dynamic-string --enable-version-specific-runtime-lib s --disable-isl-version-check --disable-libstdcxx-pch --disable-libstdcxx-debug --enable-bootstrap --disable-rpath --di sable-win32-registry --disable-nls --disable-werror --disable-symvers --with-gnu-as --with-gnu-ld --with-arch=nocona -- with-tune=core2 --with-libiconv --with-system-zlib --with-gmp=/c/mingw510/prerequisites/x86_64-w64-mingw32-static --wit h-mpfr=/c/mingw510/prerequisites/x86_64-w64-mingw32-static --with-mpc=/c/mingw510/prerequisites/x86_64-w64-mingw32-stat ic --with-isl=/c/mingw510/prerequisites/x86_64-w64-mingw32-static --with-pkgversion='x86_64-posix-seh-rev0, Built by Mi nGW-W64 project' --with-bugurl=http://sourceforge.net/projects/mingw-w64 CFLAGS='-O2 -pipe -I/c/mingw510/x86_64-510-pos ix-seh-rt_v4-rev0/mingw64/opt/include -I/c/mingw510/prerequisites/x86_64-zlib-static/include -I/c/mingw510/prerequisite s/x86_64-w64-mingw32-static/include' CXXFLAGS='-O2 -pipe -I/c/mingw510/x86_64-510-posix-seh-rt_v4-rev0/mingw64/opt/incl ude -I/c/mingw510/prerequisites/x86_64-zlib-static/include -I/c/mingw510/prerequisites/x86_64-w64-mingw32-static/includ e' CPPFLAGS= LDFLAGS='-pipe -L/c/mingw510/x86_64-510-posix-seh-rt_v4-rev0/mingw64/opt/lib -L/c/mingw510/prerequisites/x 86_64-zlib-static/lib -L/c/mingw510/prerequisites/x86_64-w64-mingw32-static/lib ' Thread model: posix gcc version 5.1.0 (x86_64-posix-seh-rev0, Built by MinGW-W64 project)