RFR: 8360791: [ubsan] Adjust signal handling when using clang

[Matthias Baesken]

On Fri, 27 Jun 2025 15:56:32 GMT, Magnus Ihse Bursie <ihse at openjdk.org> wrote:

> I agree, this does not seem to be limited to clang, unless the signal handling stuff differs in ubsan in different compilers.

I only see issues with clang (on macOS and AIX) ;  the Linux platforms using gcc are fine.

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PR Review Comment: https://git.openjdk.org/jdk/pull/26015#discussion_r2172701786