[Bug demangler/85122] Stack Overflow(Stack Exhaustion) in demangle related functions

[mudongliangabcd at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85122

--- Comment #3 from 慕冬亮 <mudongliangabcd at gmail dot com> ---
At first, I reported it in bugzilla of
binutils(https://sourceware.org/bugzilla/show_bug.cgi?id=23008). The developer
said it should be the issue of C++ demangle code and GCC maintains this
component. He advised me to post this bug in GCC Bugzilla.