https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119429
--- Comment #20 from Desmond Rhodes <desmond.rhodes at outlook dot com> --- (In reply to Desmond Rhodes from comment #17) > 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. Sorry, it should have been: ``` src:.*gcc.*include.*c\+\+.* ``` Not: ``` # src:.*gcc.*include.*c\+\+.* ``` I forgot to uncomment the line from testing.
