Segfault in eu-addr2line

Issue

• Segfault from a stack overflow in dwarf_getsrclines coming from libdwfl

[user@host ~]$ eu-addr2line -e a.out 0x400589
eu-addr2line: dwfl_module_getsrc.c:63: dwfl_module_getsrc: Assertion `cu->die.cu->lines->info [cu->die.cu->lines->nlines - 1].end_sequence' failed.
Aborted (core dumped)

• Parts of the binary are built with ICC 13.1 and there's also some experimental debug info stuff in there.