go/test/fixedbugs/issue20233.go

// errorcheck

// Copyright 2017 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 20233: panic while formatting an error message

package p

var f = func(...A) // ERROR "undefined: A"
cmd/compile: prevent panic while formatting func(...T) with unknown T Compile: package p var f = func(...A) Before this CL: x.go:3:13: type %!v(PANIC=runtime error: invalid memory address or nil pointer dereference) is not an expression x.go:3:17: undefined: A After this CL: x.go:3:13: type func(...<T>) is not an expression x.go:3:17: undefined: A Found with go-fuzz. Fixes #20233 Change-Id: Ibb232b3954c4091071440eba48b44c4022a8083f Reviewed-on: https://go-review.googlesource.com/42610 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com> 2017-05-03 23:37:03 +00:00			`// errorcheck`

			`// Copyright 2017 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 20233: panic while formatting an error message`

			`package p`

cmd/compile: suppress duplicate type errors If we've already complained about a type T, don't complain again about further expressions involving it. Fixes #20245 and hopefully all of its ilk. Change-Id: Ic0abe8235d52e8a7ac40e3615aea8f3a54fd7cec Reviewed-on: https://go-review.googlesource.com/42690 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Robert Griesemer <gri@golang.org> 2017-05-04 18:43:41 +00:00			`var f = func(...A) // ERROR "undefined: A"`