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go/test/fixedbugs/issue17588.go
Dhananjay Nakrani f46239b85c cmd/compile: initialize Decldepth in all cases
Previously, on encountering Func.Nname.Type == nil, typecheckfunc()
returned without initializing Decldepth for that func. This causes
typecheckclosure() to fatal. This change ensures that we initialize
Decldepth in all cases.

Fixes #17588.

Change-Id: I2e3c81ad52e8383395025388989e8dbf03438b68
Reviewed-on: https://go-review.googlesource.com/32415
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-10-31 19:48:17 +00:00

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Go

// errorcheck
// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Issue 17588: internal compiler error in typecheckclosure()
// because in case of Func.Nname.Type == nil, Decldepth
// is not initialized in typecheckfunc(). This test
// produces that case.
package p
type F func(b T) // ERROR "T is not a type"
func T(fn F) {
func() {
fn(nil) // If Decldepth is not initialized properly, typecheckclosure() Fatals here.
}()
}