runtime: better error for send/recv on nil channel

R=ken2 CC=golang-dev https://golang.org/cl/1835041

runtime: better error for send/recv on nil channel
R=ken2 CC=golang-dev https://golang.org/cl/1835041
cec007d3 · Russ Cox · 041d1162 · cec007d3
Commit cec007d3 authored Jul 13, 2010 by Russ Cox
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src/pkg/runtime/chan.c src/pkg/runtime/chan.c +6 -0

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--- a/src/pkg/runtime/chan.c
+++ b/src/pkg/runtime/chan.c
@@ -182,6 +182,9 @@ chansend(Hchan *c, byte *ep, bool *pres)
 	SudoG *sg;
 	G* gp;

+	if(c == nil)
+		panicstring("send to nil channel");
+
 	if(gcwaiting)
 		gosched();

@@ -286,6 +289,9 @@ chanrecv(Hchan* c, byte *ep, bool* pres)
 	SudoG *sg;
 	G *gp;

+	if(c == nil)
+		panicstring("receive from nil channel");
+
 	if(gcwaiting)
 		gosched();