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13 lines
380 B
13 lines
380 B
5 years ago
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When a block captures `weakSelf` in the following pattern:
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```
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__weak __typeof(self) weakSelf = self;
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int (^my_block)() = ^() {
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__strong __typeof(weakSelf) strongSelf = weakSelf;
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int y = strongSelf->x;
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```
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the variable `strongSelf` should be checked for `null` before being used,
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otherwise this could cause a crash because the weak pointer `weakSelf` could be
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`null`.
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