https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119429
--- Comment #17 from Desmond Rhodes <desmond.rhodes at outlook dot com> --- Anyway, I've found a way to disable UBSan `-fsanitize=integer` for the libstd++. If I make the file `ignorelist.txt`: ``` #!special-case-list-v1 [integer] # src:.*gcc.*include.*c\+\+.* ``` And then compile with: ``` clang++ -std=c++23 -fsanitize=integer -fno-sanitize-recover=all -fsanitize-ignorelist=ignorelist.txt example.cc -o example ``` The `UndefinedBehaviorSanitizer` is no longer getting triggered, or being injected into the libstdc++ code for that matter. This is because the ignorelist regex will match with: ``` /usr/lib/gcc/x86_64-linux-gnu/14/../../../../include/c++/14/format ``` Or basically any other libstdc++ headers.
