https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78518
--- Comment #2 from physiker at toast2 dot net --- > This is what I get with 5.4.1 20160929 (Ubuntu 5.4.1-2ubuntu2). Which > version of gfortran 6 are you using exactly? > I am using gcc 6.2.0 release, provided by fink. LANG=C gfortran-fsf-6 -v Using built-in specs. COLLECT_GCC=gfortran-fsf-6 COLLECT_LTO_WRAPPER=/sw/lib/gcc6/libexec/gcc/x86_64-apple-darwin13.4.0/6.2.0/lto-wrapper Target: x86_64-apple-darwin13.4.0 Configured with: ../gcc-6.2.0/configure --prefix=/sw --prefix=/sw/lib/gcc6 --mandir=/sw/share/man --infodir=/sw/lib/gcc6/info --enable-languages=c,c++,fortran,lto,objc,obj-c++,java --with-gmp=/sw --with-libiconv-prefix=/sw --with-isl=/sw --with-mpc=/sw --with-system-zlib --program-suffix=-fsf-6 Thread model: posix gcc version 6.2.0 (GCC)