From 40baf7558775cf890f7dc6c1e0ac3001b45d02b4 Mon Sep 17 00:00:00 2001
From: David Symonds <dsymonds@golang.org>
Date: Tue, 30 Jul 2013 13:41:07 +1000
Subject: [PATCH] cmd/vet: Avoid warning on pointer to invalid types.

TBR=r
CC=golang-dev
https://golang.org/cl/12038051
---
 cmd/vet/types.go | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/cmd/vet/types.go b/cmd/vet/types.go
index bd43f955cda..263f8534e96 100644
--- a/cmd/vet/types.go
+++ b/cmd/vet/types.go
@@ -113,6 +113,14 @@ func (f *File) matchArgType(t printfArgType, typ types.Type, arg ast.Expr) bool
 		return t&argPointer != 0 || f.matchArgType(t, typ.Elem(), arg)
 
 	case *types.Pointer:
+		// Ugly, but dealing with an edge case: a known pointer to an invalid type,
+		// probably something from a failed import.
+		if typ.Elem().String() == "invalid type" {
+			if *verbose {
+				f.Warnf(arg.Pos(), "printf argument %v is pointer to invalid or unknown type", f.gofmt(arg))
+			}
+			return true // special case
+		}
 		return t&argPointer != 0
 
 	case *types.Basic: