thakis added a comment. Do you have any numbers on false positives / true positives uncovered by this tweak? In general, warning at use time instead of at declaration time tends to be much better for this rate, and we do this differently than gcc in several instances, because the gcc way has so many false positives that it makes warnings unusable, while warning on use makes the warning useful. So I'd like to see a better justification than "gcc does it" :)
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