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cmd/compile: diagnose unused variable even in closure #3059

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cmd/compile: diagnose unused variable even in closure#3059
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FrozenDueToAgeNeedsFixThe path to resolution is known, but the work has not been done.early-in-cycleA change that should be done early in the 3 month dev cycle.
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@rogpeppe

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@rogpeppe
rogpeppe
opened on Feb 17, 2012
package main

func main() {
    i := 0
    go func() {
        i = 1
    }()
}

This compiles without errors.
I would expect this to give an "i declared and not used" error.

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    FrozenDueToAgeNeedsFixThe path to resolution is known, but the work has not been done.early-in-cycleA change that should be done early in the 3 month dev cycle.

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