[jdk11u-dev] RFR: 8274860: gcc 10.2.1 produces an uninitialized warning in sharedRuntimeTrig.cpp [v2]

[Paul Hohensee]

On Mon, 8 Nov 2021 00:35:54 GMT, Joshua Cao <duke at openjdk.java.net> wrote:

>> Fix the warning by initializing `fq` to an array of zeroes.
>> 
>> Warning suppressed in tip https://github.com/openjdk/jdk/blob/master/make/hotspot/lib/CompileJvm.gmk#L83, but not suppressed in JDK11.
>
> Joshua Cao has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains one additional commit since the last revision:
> 
>   8274860: gcc 10.2.1 produces an uninitialized warning in sharedRuntimeTrig.cpp

compilerWarnings.cpp needs to set  PRAGMA_MAYBE_UNINITIALIZED_IGNORED to null if it's undefined, the same way as is PRAGMA_STRINGOP_TRUNCATION_IGNORED.

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Changes requested by phh (Reviewer).

PR: https://git.openjdk.java.net/jdk11u-dev/pull/489