[jdk8u-dev] RFR: 8255466: C2 crashes at ciObject::get_oop() const+0x0 [v3]

[Andrew John Hughes]

On Fri, 31 Jan 2025 05:49:30 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
>
> SendaoYan has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Add a whitespace

Backport looks good.
Happy to approve this once the [JDK-8349166](https://bugs.openjdk.org/browse/JDK-8349166) issue is resolved from the previous JDK-8349166 backport.

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PR Review: https://git.openjdk.org/jdk8u-dev/pull/536#pullrequestreview-2588030442