From: Ian Lance Taylor <iant@golang.org>
Date: Tue, 10 Mar 2020 04:33:35 +0000 (-0700)
Subject: cmd/cgo: always produce a parameter name for C code
X-Git-Tag: go1.15beta1~910
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=38ad3baf0054e926136d8a2cfe6458f41b544841;p=gostls13.git

cmd/cgo: always produce a parameter name for C code

Updates #37746

Change-Id: Ib64abe3995f310cd50ede47b0d3d159572901000
Reviewed-on: https://go-review.googlesource.com/c/go/+/222622
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
---

diff --git a/src/cmd/cgo/out.go b/src/cmd/cgo/out.go
index 1518e5fab8..6b40a255d5 100644
--- a/src/cmd/cgo/out.go
+++ b/src/cmd/cgo/out.go
@@ -809,6 +809,10 @@ func (p *Package) packedAttribute() string {
 // the value of position; otherwise, this function will return the
 // value of param.
 func exportParamName(param string, position int) string {
+	if param == "" {
+		return fmt.Sprintf("p%d", position)
+	}
+
 	pname := param
 
 	for i := 0; i < len(param); i++ {