tree 5fdd029ac21d85a45a55e20d97f706b68a15ad68
parent 7baacfbe02f235d27c577edaa1e74f9f7f55c103
author alkiller22 <ao22yama@gmail.com> 1568807433 +0000
committer Rebecca Stambler <rstambler@golang.org> 1568863136 +0000

cmd/vet: fix a bad case of shadow check about redeclaration

`go tools vet -shadow` ignored the case like this form
```golang
func shadowBlock() {
    var a int
    {
        var a = 3
        _ = a
    }
    _ = a
}
```
This commit fix it on "idiomaticRedecl" func, and add the code above in testcase.

Change-Id: I007f8287766f59cd7ded86072ba6bf6743c392be
GitHub-Last-Rev: b8b302b2048d709a39fb17496ba80917f9f4c889
GitHub-Pull-Request: golang/tools#143
Reviewed-on: https://go-review.googlesource.com/c/tools/+/189158
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>