RFR: 8288754: GCC 12 fails to build zReferenceProcessor.cpp

[Stefan Karlsson]

On Mon, 20 Jun 2022 18:47:16 GMT, Kim Barrett <kbarrett at openjdk.org> wrote:

> Looks good.
> 
> > (This thing should be more reasonably handled when `ShouldNotReachHere()` is
> > somehow `nonreturn`-ed, but Hotspot style doc is still undecided on this).
> 
> The problem with using `[[noreturn]]` for assert/guarantee/ShouldNotReachHere &etc is that they aren't currently noreturn, due to `Debugging` and (in non-product builds) `SuppressErrorAt`. I've sometimes wondered if anyone actually uses `SuppressErrorAt`. But I haven't pursued the question because of `Debugging`, which seems to be involved in dealing with error handler reentrancy or recursion or the like (I don't recall details).

Also, see the discussion in https://bugs.openjdk.org/browse/JDK-8065585

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PR: https://git.openjdk.org/jdk19/pull/47