https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120541
--- Comment #2 from Xudong Cao <xdcao.cs at gmail dot com> --- I have submitted a related issue to nm (https://sourceware.org/bugzilla/show_bug.cgi?id=33028), but based on the analysis, the underlying problem originates in libiberty/rust-demangle.c and should be addressed by the GCC project.