RFR: 8347531: The signal tests are failing after JDK-8345782 due to an unrelated warning

[Joakim Nordström]

On Tue, 14 Jan 2025 13:14:59 GMT, Joakim Nordström <jnordstrom at openjdk.org> wrote:

> Could I get a review of this fix for the SigTestDriver test?
> 
> This fix adds more context from the libjsig deprecation warning to only catch the correct scenario in the test.
> 
> Previously the test only checked for the words `VM warning` in the output to determine the deprecation warning was present. However, another VM Warning printed when running a flag on an unsupported platform made the SigTestDriver fail incorrectly (`VM warning: -XX:+UseLargePages not supported in this VM`).
> 
> ## Testing
> * [x] Verified test still succeeds in "normal" way
> * [x] Verified test also succeeds despite having the other warning.
> * [x] Tested tier1-tier3

Thanks for review!

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PR Comment: https://git.openjdk.org/jdk/pull/23103#issuecomment-2591970606