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[runtime] Detect recursion when handling unhandled Objective-C exceptions. Fixes #14796. #20276

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merged 6 commits into from
Mar 13, 2024
Merged

[runtime] Detect recursion when handling unhandled Objective-C exceptions. Fixes #14796. #20276

merged 6 commits into from
Mar 13, 2024

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rolfbjarne
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Detect recursion when handling unhandled Objective-C exceptions, which can happen if:

  • We install a handler for unhandled Objective-C exceptions.
  • An unhandled Objective-C exception is caught.
  • We convert the unhandled Objective-C exception to a managed exception, and throw that.
  • Nobody handles the managed exception either, so we convert it to an Objective-C exception and throw that.
  • We re-enter the unhandled Objective-C exception handler, and the cycle continues.
  • Eventually the process crashes due to a stack overflow.

Fixes #14796.

@rolfbjarne
[runtime] Detect recursion when handling unhandled Objective-C except…
37769d1 
…ions. Fixes xamarin#14796.

Detect recursion when handling unhandled Objective-C exceptions, which can happen if:

* We install a handler for unhandled Objective-C exceptions.
* An unhandled Objective-C exception is caught.
* We convert the unhandled Objective-C exception to a managed exception, and throw that.
* Nobody handles the managed exception either, so we convert it to an Objective-C exception and throw that.
* We re-enter the unhandled Objective-C exception handler, and the cycle continues.
* Eventually the process crashes due to a stack overflow.

Fixes xamarin#14796.
@rolfbjarne
[runtime] Fix min OS versions in various compiler and linker arguments.
0d029c6 
Once upon a time we needed to special case a higher min OS version that the
min OS version we supported for certain compiler/linker arguments, because we
used features not supported in the min OS version we supported.

That time has passed; in all cases our min OS version is now higher than the
special-cased min OS versions passed to native compilers/linkers, so we can
just use the actual min OS version we support.
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✅ API diff for current PR / commit

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🚀 [CI Build] Test results 🚀

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✅ cecil: All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (iOS): All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (MacCatalyst): All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (macOS): All 1 tests passed. Html Report (VSDrops) Download
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✅ generator: All 2 tests passed. Html Report (VSDrops) Download
✅ install-source: All 1 tests passed. Html Report (VSDrops) Download
✅ interdependent-binding-projects: All 7 tests passed. Html Report (VSDrops) Download
✅ introspection: All 8 tests passed. Html Report (VSDrops) Download
✅ linker: All 65 tests passed. [attempt 2] Html Report (VSDrops) Download
✅ mac-binding-project: All 1 tests passed. Html Report (VSDrops) Download
✅ mmp: All 2 tests passed. Html Report (VSDrops) Download
✅ mononative: All 6 tests passed. Html Report (VSDrops) Download
✅ monotouch (iOS): All 11 tests passed. Html Report (VSDrops) Download
✅ monotouch (MacCatalyst): All 7 tests passed. Html Report (VSDrops) Download
✅ monotouch (macOS): All 8 tests passed. Html Report (VSDrops) Download
✅ monotouch (tvOS): All 11 tests passed. Html Report (VSDrops) Download
✅ monotouch (watchOS): All 4 tests passed. Html Report (VSDrops) Download
✅ msbuild: All 2 tests passed. Html Report (VSDrops) Download
✅ mtouch: All 1 tests passed. Html Report (VSDrops) Download
✅ xammac: All 3 tests passed. Html Report (VSDrops) Download
✅ xcframework: All 8 tests passed. Html Report (VSDrops) Download
✅ xtro: All 2 tests passed. Html Report (VSDrops) Download

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@rolfbjarne rolfbjarne marked this pull request as ready for review March 12, 2024 10:08
@rolfbjarne rolfbjarne merged commit 9b8869b into xamarin:main Mar 13, 2024
63 checks passed
@rolfbjarne rolfbjarne deleted the avoid-stackoverflow-exception-handling branch March 13, 2024 10:16
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@dalexsoto dalexsoto dalexsoto approved these changes

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Infinite recursion with unhandled managed exceptions and exception marshaling is set to throw
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@rolfbjarne @vs-mobiletools-engineering-service2 @dalexsoto