[PATCH] D112850: [clang] 'unused-but-set-variable' warning should not apply to __block objective-c pointers

[Akira Hatanaka via Phabricator via cfe-commits]

ahatanak added a comment.

The lifetime of an object won't be extended in the following case since the variable isn't captured by a block:

  void foo(id);
  
  void test(id a) {
      __block id t = a;
      foo(a);
      t = 0;
  }

clang should probably warn if a variable marked `__block` isn't captured by a block, but I don't think `-Wunused-but-set-variable` should catch that.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D112850/new/

https://reviews.llvm.org/D112850