Should we build UBSAN versions of our system libraries?

[sbc100]

I just ran into a bug in wasmfs that I think UBSAN would have picked up. See #24257

It looks like we build libwasmfs as AsanInstrumentedLibrary, but we have no equivalent for ubsan

[dschuff]

InstrumentedLibrary means when the user build is a sanitizer build, the libraries would be as well?

[sbc100]

Yes.. although we only do that for asan and not ubsan today. There is no way to build system libraries with ubsan today AFAICT.