Hi all,
If one wants to do something with every item in an NSArray in a concurrent way,
is the following safe/correct?
NSArray* array = @[@5, @6, @7, @8, @9, @10, @11];
dispatch_apply([array count], DISPATCH_APPLY_AUTO, ^(size_t idx) {
id unused = array[idx];
});
Here of course I'm not doing anything interesting, just extracting the object
from the array. This is a reduced example.
On one Mac I have, Thread Sanitizer says there is a data race there. On
another Mac, Thread Sanitizer does not complain.
My understanding is that this code is correct, and that TSan is wrong to
complain, but maybe I'm wrong...
Thanks,
Sean
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