From: Devon H. O'Dell <devon.odell@gmail.com>
Date: Wed, 23 Dec 2009 17:26:21 +0000 (-0800)
Subject: cgo: don't overwrite p.Crefs
X-Git-Tag: weekly.2010-01-05~47
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=7c9111434a6ef6ee8fb01fcdda28bd4f935ddbd3;p=gostls13.git

cgo: don't overwrite p.Crefs

It's expected to be shared between all files so that all types are output.
Fixes bug reported on mailing list by Peter Froehlich.

R=rsc, phf
CC=golang-dev
https://golang.org/cl/183043
---

diff --git a/src/cmd/cgo/ast.go b/src/cmd/cgo/ast.go
index 76ff9ec653..c78d8bb8e6 100644
--- a/src/cmd/cgo/ast.go
+++ b/src/cmd/cgo/ast.go
@@ -118,7 +118,9 @@ func openProg(name string, p *Prog) {
 	}
 
 	// Accumulate pointers to uses of C.x.
-	p.Crefs = make([]*Cref, 0, 8)
+	if p.Crefs == nil {
+		p.Crefs = make([]*Cref, 0, 8)
+	}
 	walk(p.AST, p, "prog")
 }