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cmd/vet: Add a warning when := causes a variable name to be shadowed #5634
The language permits shadowing with := as long as both variables are used after they are defined. However, it would be reasonable for go vet to warn if := is used to define a local variable when there is a local variable of the same name in an enclosing block. Example: http://play.golang.org/p/DQDXOyfwRl . A quick glance might lead one to think this program would print 2, but it prints 0.
This issue was closed.