RFR: 8282231: x86-32: runtime call to SharedRuntime::ldiv corrupts registers [v2]

Tue Feb 22 15:37:35 UTC 2022

On Tue, 22 Feb 2022 14:50:05 GMT, Jie Fu <jiefu at openjdk.org> wrote:

> So how did you find this bug? 

Found during testing of a new OS build. Fails bootstrap.

> Is it possible to add a jtreg test for this fix?

No, because it corrupts registers in arbitrary places, causing seemingly-random crashes.
If you're lucky it'll corrupt a pointer value, in which case you're almost guaranteed a crash.
If you're unlucky it'll corrupt some data value somewhere. It's a Heisenbug.

> Please also update the copyright year. Thanks.

OK.

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PR: https://git.openjdk.java.net/jdk/pull/7575