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[CP] Fix _availability_version_check for iOS 11 and 12 #48926
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This PR ports more of the implementation of availability checking from clang-rt into the Engine. In particular, when the call to look up the symbol `_availability_version_check` fails, this PR falls back on reading the platform version information out of a plist file at a well-known location, as is done [here](https://github.com/llvm/llvm-project/blob/2fd66e6eb659701b9d4c88708d55d5854a246815/compiler-rt/lib/builtins/os_version_check.c#L163). This change fixes a mistake in flutter#44711, which didn't account for `_availability_version_check` not being available on iOS 11 and 12. Fixes flutter/flutter#138711
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@chinmaygarde if the crash now being reported on flutter/flutter#138711 is unrelated, I think we should CP this fix. |
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I could not reproduce the home screen crash on iPhone 6 and I believe it is unrelated. |
chinmaygarde
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* [CP] Fix _availability_version_check for iOS 11 and 12 (flutter#48926) CP of flutter@5587d26 into 3.16 for flutter/flutter#138711. * [CP] [Impeller] Turn off Aiks bounds tracking for filtered SaveLayers. (flutter#49198) Cherry-pick for flutter#49076. For issue: flutter/flutter#139294 * [CP] Fix for AnimatedOpacity affects blended color overlay render (flutter#49190) This PR cherry-picks the following two commits: flutter@2dbc5d2 flutter@0b0fab8 to address flutter/flutter#139571 * [cherrypick-stable]Skip unexpected events in MultiPlatformViewBackgroundForegroundScenar… (flutter#49247) â�¦io (flutter#48456) Fixes flutter/flutter#138193. Was first attempted to fix in flutter#48096, but that was not reliable since it's all asynchronous. ------------------------------------------- cherry pick to fix mac unopt failures on stable branch: https://flutter-dashboard.appspot.com/#/build?repo=engine&branch=flutter-3.16-candidate.0 --------- Co-authored-by: Zachary Anderson <[email protected]> Co-authored-by: Brandon DeRosier <[email protected]> Co-authored-by: Xilai Zhang <[email protected]>
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CP of 5587d26 into 3.16 for flutter/flutter#138711.