From: Russ Cox <rsc@golang.org>
Date: Thu, 1 Nov 2012 16:55:21 +0000 (-0400)
Subject: cmd/gc: avoid %#x of 0
X-Git-Tag: go1.1rc2~2004
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=e4cef96be6f03aa3e7e4979f1d55f8e66289904b;p=gostls13.git

cmd/gc: avoid %#x of 0

Plan 9 and Go's lib9/fmt disagree on whether %#x includes the 0x prefix
when printing 0, because ANSI C gave bad advice long ago.

Avoiding that case makes binaries compiled on different systems compatible.

R=ken2
CC=akumar, golang-dev
https://golang.org/cl/6814066
---

diff --git a/src/cmd/gc/esc.c b/src/cmd/gc/esc.c
index a2bcbae8fe..6ac0ea530f 100644
--- a/src/cmd/gc/esc.c
+++ b/src/cmd/gc/esc.c
@@ -233,7 +233,7 @@ mktag(int mask)
 	if(mask < nelem(tags) && tags[mask] != nil)
 		return tags[mask];
 
-	snprint(buf, sizeof buf, "esc:%#x", mask);
+	snprint(buf, sizeof buf, "esc:0x%x", mask);
 	s = strlit(buf);
 	if(mask < nelem(tags))
 		tags[mask] = s;