[jdk8u-dev] RFR: 8255466: C2 crashes at ciObject::get_oop() const+0x0

[Paul Hohensee]

On Sun, 7 Jul 2024 08:55:07 GMT, SendaoYan <syan at openjdk.org> wrote:

> Hi all
> This is backport of JDK-8255466, to fixes the corner case in C2. This PR also fix the compiler warning `hotspot/src/share/vm/opto/type.cpp:2556:71: error: ‘this’ pointer is null` with gcc13.
> Patch does not apply cleanly due to in jdk8u, the jtreg tag @run main need add `bootclasspath`.
> New test fails without the patch, passes with it.
> 
> Additional testing:
> 
> - [x] linux x64 tier1/2/3 jtreg test
> - [x] linux aarch64 tier1/2/3 jtreg test

This backport includes a backport of [JDK-8250825](https://bugs.openjdk.org/browse/JDK-8250825). Please either do that backport first, or merge it with this PR.

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Changes requested by phh (Reviewer).

PR Review: https://git.openjdk.org/jdk8u-dev/pull/536#pullrequestreview-2194594981