[jdk24u] RFR: 8352946: SEGV_BND signal code of SIGSEGV missing from our signal-code table

[Matthias Baesken]

On Wed, 2 Apr 2025 15:29:35 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

>> I define it (line 54) if it is not there so it should be safe.
>
> Hmm, okay. 
> 
> That means that when we build on an older machine, and Linux kernels change the constant in newer kernel releases, we may use the wrong number.
> 
> What I would do is this:
> 
> 
> #define SEGV_BNDERR_value 3
> #if defined(SEGV_BNDERR)
> STATIC_ASSERT(SEGV_BNDERR == SEGV_BNDERR_value)
> #else
> #define SEGV_BNDERR SEGV_BNDERR_value
> #endif
> 
> 
> The static assert will alert us if we build on a newer Linux version and turns out we were wrong with our assumed number.

Not sure if this is very likely , but who knows.
I created  https://bugs.openjdk.org/browse/JDK-8353568

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PR Review Comment: https://git.openjdk.org/jdk24u/pull/175#discussion_r2025104219