RFR: 8288048: Build failure with GCC 6 after JDK-8286562

[Aleksey Shipilev]

On Thu, 9 Jun 2022 07:22:50 GMT, Kim Barrett <kbarrett at openjdk.org> wrote:

> Another possibility would be to add `-Wunknown-pragmas` to the PRAGMA_DISABLE_GCC_WARNING macro. (I think that's okay for the same reason I think it would have been okay for gcc to ignore it in the first place.) 

Filed:
 https://bugs.openjdk.org/browse/JDK-8288093

> But I won't insist on that approach, and am willing to accept this proposed change as-is instead, hence marking it approved even though it's not my first choice.

Thank you. Would you consider this fix trivial? I'd like to get it before fork for RDP1. Otherwise I would need to push it to JDK 19 rampdown tree anyway.

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PR: https://git.openjdk.java.net/jdk/pull/9090