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[3.14] gh-153631: Move to macos-26 runner for iOS (GH-153632)#153674

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[3.14] gh-153631: Move to macos-26 runner for iOS (GH-153632)#153674
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@freakboy3742 freakboy3742 commented Jul 13, 2026

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Switches iOS CI to use the macos-26 runner, and makes a small change to the iOS build script to improve build stability. xcodebuild doesn't guarantee that the CoreSimulatorService is running before starting a simulator. If the service isn't running, xcodebuild reports that no simulators are available, and fails to start the test app. However, simctl blocks until the simulator is available, and simctl is used to evaluate the default simulator. So - the iOS build script now unconditionally determines the default simulator, even if a specific simulator is requested.
(cherry picked from commit 2dc1a91)

…53632)

Switches iOS CI to use the macos-26 runner, and makes a small change to the iOS
build script to improve build stability. xcodebuild doesn't guarantee that the
CoreSimulatorService is running before starting a simulator. If the service
isn't running, xcodebuild reports that no simulators are available, and fails to
start the test app. However, simctl blocks until the simulator is available, and
simctl is used to evaluate the default simulator. So - the iOS build script now
unconditionally determines the default simulator, even if a specific simulator
is requested.
(cherry picked from commit 2dc1a91)

Co-authored-by: Russell Keith-Magee <russell@keith-magee.com>
@freakboy3742

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Not sure what is going on with the fuzzing tests - I can't see any reason why this change would affect fuzzing performance.

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