https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64732
--- Comment #3 from Markus Trippelsdorf <trippels at gcc dot gnu.org> --- (In reply to ktkachov from comment #2) > (In reply to Richard Biener from comment #1) > > Waiting for some kind of a testcase (or at least a pointer to what Julia > > is). > > Judging by the .jl suffix, I'd think it's this: > http://julialang.org/ Yes. Here's another backtrace: ======= Backtrace: ========= /lib/libc.so.6(+0x73fbe)[0x7f3682997fbe] /lib/libc.so.6(+0x7973d)[0x7f368299d73d] /lib/libc.so.6(+0x79f4b)[0x7f368299df4b] /usr/lib/gcc/x86_64-pc-linux-gnu/5.0.0/libgfortran.so.3(+0xe6aa6)[0x7f366f954aa6] /usr/lib/gcc/x86_64-pc-linux-gnu/5.0.0/libgfortran.so.3(+0xe6bb2)[0x7f366f954bb2] /usr/lib/gcc/x86_64-pc-linux-gnu/5.0.0/libgfortran.so.3(+0x1a7f9)[0x7f366f8887f9] /lib64/ld-linux-x86-64.so.2(+0xf927)[0x7f368399a927] /lib/libc.so.6(+0x3686a)[0x7f368295a86a] /lib/libc.so.6(+0x368b5)[0x7f368295a8b5] /lib/libc.so.6(__libc_start_main+0xf7)[0x7f3682943fd7] /var/tmp/julia/usr/bin/julia[0x4014d5] addr2line shows: libgfortran/io/unit.c:718 : 718 free_format_hash_table (u); libgfortran/io/unit.c:764 libgfortran/runtime/main.c:292 Don't know how to come up with a small testcase yet.