https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70058
--- Comment #5 from kargl at gcc dot gnu.org --- (In reply to Jerry DeLisle from comment #4) > The problem does not exist on Linux for sure. Not sure if this is a TDM > distribution problem, a Windows problem, a MingW problem, or gfortran. > > I am going to have to get set up on Windows so this may take a while. From the backtrace in comment #3, (gdb) backtrace #0 in strcmp () from C:\WINDOWS\system32\msvcrt.dll #1 in libgfortran_64-3!clog10l () #2 in libgfortran_64-3!clog10l () #3 in libgfortran_64-3!_gfortran_unpack1_char4 () #4 in libgfortran_64-3!_gfortran_unpack1_char4 () #5 in libgfortran_64-3!_gfortran_st_open () I doubt that this is a gfortran problem. It is highly unlikely that OPEN uses a complex*16 log10 function that calls itself.