RFR: 8340801: Disable ubsan checks in some awt/2d coding

[David Holmes]

On Tue, 1 Oct 2024 08:20:43 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

>> `jni_md.h` is shipped as part of every JDK distribution - this change does NOT belong in that file.
>
>> `jni_md.h` is shipped as part of every JDK distribution - this change does NOT belong in that file.
> 
> Hi David, should I introduce a separate ub.hpp  (similar to what we have in Hotspot) ?

@MBaesken my understanding is that src/java.base/share/native/include is for exported header files, it is not a general location to put this new header.

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PR Comment: https://git.openjdk.org/jdk/pull/21184#issuecomment-2387279143