https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79540
--- Comment #15 from John David Anglin <danglin at gcc dot gnu.org> --- print '(f2.1)', 100.000000 end causes a stack overflow in memcpy: (gdb) bt Python Exception <type 'exceptions.ImportError'> Failed to load /home/gnu/lib/python2.7/lib-dynload/itertools.sl: #0 0xc01cf85c in memcpy () from /usr/lib/libc.2 #1 0xc1c0545c in ?? () from /home/gnu/gcc/gcc-7/lib/libgfortran.sl.4 #2 0x00000000 in ?? () from /usr/lib/libc.2 We seem to have a huge size argument (0xfffffffd). Breakpoint 2, 0x7afce720 in memcpy () from /usr/lib/libc.2 (gdb) p/x $r26 $4 = 0x7eff0cfd (gdb) p/x $r25 $5 = 0x7eff0e7a (gdb) p/x $r24 $6 = 0xfffffffd (gdb) bt Python Exception <type 'exceptions.ImportError'> Failed to load /home/gnu/lib/python2.7/lib-dynload/itertools.sl: #0 0x7afce720 in memcpy () from /usr/lib/libc.2 #1 0x7ade245c in ?? () from /home/gnu/gcc/gcc-7/lib/libgfortran.sl.4 #2 0x7ade2f14 in ?? () from /home/gnu/gcc/gcc-7/lib/libgfortran.sl.4 #3 0x7ade42c4 in ?? () from /home/gnu/gcc/gcc-7/lib/libgfortran.sl.4 #4 0x7add8444 in ?? () from /home/gnu/gcc/gcc-7/lib/libgfortran.sl.4 #5 0x7add8af4 in ?? () from /home/gnu/gcc/gcc-7/lib/libgfortran.sl.4 #6 0x7add4adc in ?? () from /home/gnu/gcc/gcc-7/lib/libgfortran.sl.4 #7 0x7add4b38 in ?? () from /home/gnu/gcc/gcc-7/lib/libgfortran.sl.4
