https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110147
--- Comment #1 from lukas.dresel at cs dot ucsb.edu --- The invocation was `rust_demangle(mangled=0x18140ad "_RYC0.vdj\\lc[kniso,bz", options=0x103)`. The original bug report to binutils can be found here with more details: https://sourceware.org/bugzilla/show_bug.cgi?id=30507