https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94307
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #1)
> But isn't the default without -fsanitize-undefined-trap-on-error already
> calling
> a library routine that the kernel could override?
They don't want to implement all the:
call __ubsan_handle_add_overflow
call __ubsan_handle_divrem_overflow
call __ubsan_handle_dynamic_type_cache_miss
call __ubsan_handle_invalid_builtin
call __ubsan_handle_load_invalid_value
call __ubsan_handle_mul_overflow
call __ubsan_handle_negate_overflow
call __ubsan_handle_nonnull_arg
call __ubsan_handle_out_of_bounds
call __ubsan_handle_pointer_overflow
call __ubsan_handle_shift_out_of_bounds
call __ubsan_handle_sub_overflow
call __ubsan_handle_type_mismatch_v1
...
run-time entry points.
