RFR: 8257794: Zero: assert(istate->_stack_limit == istate->_thread->last_Java_sp() + 1) failed: wrong on Linux/x86_32

[Jie Fu]

On Sun, 6 Dec 2020 23:17:08 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> Hold on a sec, I meant to see why the assert is there, and why it is in that form, and why it is `IA32_ONLY`. It should either be a generic assert (if it is good assert), or removed completely (if it is a superfluous assert). Code history should reveal the answer to that...

The assert seems to be there at the creation of the OpenJDK repo.
It was checked in at the second commit:
commit 8153779ad32d1e8ddd37ced826c76c7aafc61894
Author: J. Duke <duke at openjdk.org>
Date:   Sat Dec 1 00:00:00 2007 +0000

    Initial load

I had checked the debug version of jdk8's zero on Linx/x86_32 finding that it crashed due to the same reason.
Maybe, the debug version of zero for x86_32 was broken at the very beginning.

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PR: https://git.openjdk.java.net/jdk/pull/1637