[release/6.0] Disable objc_msgSend stubs in clang for compatibility with Xcode 13 #91118
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…ith Xcode 13 Backport of dotnet#89932 and dotnet#90217 to release/6.0
akoeplinger
added
Servicing-consider
akoeplinger
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vargaz,
lambdageek,
SamMonoRT and
marek-safar
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ghost
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Tagging subscribers to 'os-ios': @steveisok, @akoeplinger, @kotlarmilos Issue DetailsBackport of #89932 and #90217 to release/6.0 Customer ImpactAs soon as we're updating the macOS build machine image used to build dotnet/runtime to one that uses Xcode 14 the native build of Objective-C code will start emitting objc_msgSend stubs. This causes the native libraries to fail during linking with the linker in Xcode 13, effectively preventing Mac/iOS/tvOS apps from working. Note that this can happen automatically if AzDO updates the macOS build images. The fix is to disable the objc_msgSend stubs via a compiler flag, following what xamarin-macios did a while ago: xamarin/xamarin-macios#16231 TestingCI and local testing RiskLow. The PR adds an additional compiler flag to every .m Objective-C file to prevent the new Xcode 14 behavior.
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Tagging subscribers to this area: @dotnet/runtime-infrastructure Issue DetailsBackport of #89932 and #90217 to release/6.0 Customer ImpactAs soon as we're updating the macOS build machine image used to build dotnet/runtime to one that uses Xcode 14 the native build of Objective-C code will start emitting objc_msgSend stubs. This causes the native libraries to fail during linking with the linker in Xcode 13, effectively preventing Mac/iOS/tvOS apps from working. Note that this can happen automatically if AzDO updates the macOS build images. The fix is to disable the objc_msgSend stubs via a compiler flag, following what xamarin-macios did a while ago: xamarin/xamarin-macios#16231 TestingCI and local testing RiskLow. The PR adds an additional compiler flag to every .m Objective-C file to prevent the new Xcode 14 behavior.
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akoeplinger
added
Servicing-approved
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Approved by tactics over email. Failures are known issues. |
Backport of #89932 and #90217 to release/6.0
Customer Impact
As soon as we're updating the macOS build machine image used to build dotnet/runtime to one that uses Xcode 14 the native build of Objective-C code will start emitting objc_msgSend stubs. This causes the native libraries to fail during linking with the linker in Xcode 13, effectively preventing Mac/iOS/tvOS apps from working. Note that this can happen automatically if AzDO updates the macOS build images.
The fix is to disable the objc_msgSend stubs via a compiler flag, following what xamarin-macios did a while ago: xamarin/xamarin-macios#16231
Testing
CI and local testing
Risk
Low. The PR adds an additional compiler flag to every .m Objective-C file to prevent the new Xcode 14 behavior.