[Bug sanitizer/60275] [UBSAN] Add -f[no-]sanitize-recover/-fsanitize-undefined-trap-on-error to make UBSAN's runtime errors fatal

[burnus at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60275

--- Comment #2 from Tobias Burnus <burnus at gcc dot gnu.org> ---
Post script: CLANG has:
  '-fsanitize=undefined' not allowed with '-fsanitize-undefined-trap-on-error'

And regarding the function call: With -fno-sanitize-recover one simply appends
an "_abort" to the function call, i.e. __ubsan_handle_add_overflow becomes
__ubsan_handle_add_overflow_abort. [For all functions but
__ubsan_handle_builtin_unreachable and __ubsan_handle_missing_return, which
always abort / Die() themselves.]