RFR: 8373110: jstack --mixed frames are broken on macOS after JDK-8371194 [v3]

Tue Dec 9 04:03:56 UTC 2025

On Tue, 9 Dec 2025 01:08:31 GMT, Yasumasa Suenaga <ysuenaga at openjdk.org> wrote:

>> [JDK-8371194](https://bugs.openjdk.org/browse/JDK-8371194) (PR #28284) has broken PStack (jstack --mixed) behavior on macOS. It affects both AMD64 and AArch64. See JBS for details.
>> 
>> This PR fixes it to implement `CFrame::toFrame`.
>
> Yasumasa Suenaga has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Check RBP

src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/debugger/bsd/aarch64/BsdAARCH64CFrame.java line 67:

> 65: 
> 66:    @Override
> 67:    public CFrame sender(ThreadProxy thread, Address nextSP, Address nextFP, Address nextPC) {

Why is it that for aarch64 these are all "next" arguments, but for AMD64 they are not?

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PR Review Comment: https://git.openjdk.org/jdk/pull/28686#discussion_r2600990445