[Webkit-unassigned] [Bug 247775] New: REGRESSION (256161 at main): [ macOS Debug ] TestWebKitAPI.GPUProcess.OnlyLaunchesGPUProcessWhenNecessaryMediaFeatureDetection is a consistent failure

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=247775

            Bug ID: 247775
           Summary: REGRESSION (256161 at main): [ macOS Debug ]
                    TestWebKitAPI.GPUProcess.OnlyLaunchesGPUProcessWhenNec
                    essaryMediaFeatureDetection is a consistent failure
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: rackler at apple.com

Description:
TestWebKitAPI.GPUProcess.OnlyLaunchesGPUProcessWhenNecessaryMediaFeatureDetection

The first failure I saw on the dashboard was at 256161 at main.  This test consistently fails for BigSur, Monterey, and Ventura Debug bots.  

Reproduction steps:
I can reproduce this on 256164 at main but cannot reproduce it on 256158 at main or earlier.  Looking at the commits, https://commits.webkit.org/compare/256158@main...256164@main , 256161 at main modifies the GPUProcess and appears to be the commit that started the consistent failures.

Command: 
run-api-tests --debug TestWebKitAPI.GPUProcess.OnlyLaunchesGPUProcessWhenNecessaryMediaFeatureDetection

History:
https://results.webkit.org/?suite=api-tests&test=TestWebKitAPI.GPUProcess.OnlyLaunchesGPUProcessWhenNecessaryMediaFeatureDetection&limit=5000

test result:
Failed

    TestWebKitAPI.GPUProcess.OnlyLaunchesGPUProcessWhenNecessaryMediaFeatureDetection
        2022-11-10 17:33:45.491 com.apple.WebKit.WebContent.Development[37791:1078914] ApplePersistence=NO
        LEAK: 1 WebProcessPool
        LEAK: 1 WebPageProxy

        /Volumes/Data/worker/trunk-monterey-debug-archive/build/OpenSource/Tools/TestWebKitAPI/Tests/WebKitCocoa/GPUProcess.mm:282
        Expected equality of these values:
          [configuration.get().processPool _gpuProcessIdentifier]
            Which is: 37794
          0

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