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cmd/vet: don't crash in cgo checker if type is unknown 

Fixes #14201.

Change-Id: Ib61f8c00cae72463f59b90ae199fbdc1e7422a79
Reviewed-on: https://go-review.googlesource.com/19174
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
This commit is contained in:
Ian Lance Taylor 2016-02-02 13:23:32 -08:00 committed by Russ Cox
parent 4760b5a478
commit 182a9db2dc
2 changed files with 12 additions and 0 deletions
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3
src/cmd/vet/cgo.go
View File

@ -72,6 +72,9 @@ func cgoBaseType(f *File, arg ast.Expr) types.Type {
}
// Here arg is *f(v).
t := f.pkg.types[call.Fun].Type
if t == nil {
break
}
ptr, ok := t.Underlying().(*types.Pointer)
if !ok {
break

9
src/cmd/vet/testdata/cgo2.go vendored Normal file
View File

@ -0,0 +1,9 @@
// 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.
// Test the cgo checker on a file that doesn't use cgo.
package testdata
var _ = C.f(*p(**p))