[Bug sanitizer/110704] When ubsan reports an error, asan reports a leak in cp-demangle.c

[marc.mutz at hotmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110704

--- Comment #1 from Marc Mutz <marc.mutz at hotmail dot com> ---
GCC self-compiled, line numbers should be as at 275820c09e5:

$ g++ --version
g++ (GCC) 13.0.1 20230124 (experimental)
$ (cd ~/C++/gcc; git log -1 --oneline)
275820c09e5 (HEAD, origin/trunk, origin/master, origin/HEAD) arm: Fix inclusion
of arm-mlib.h header more than once (pr108505).