libiberty/rust-demangle.c in GNU GCC 11.2 allows stack consumption in demangle_const, as demonstrated by nm-new.
https://github.com/cwayne18/vexscan
https://sourceware.org/bugzilla/show_bug.cgi?id=28995
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105039
https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-32431
https://cert-portal.siemens.com/productcert/html/ssa-398330.html