From: Lorenzo Stoakes <lstoakes@gmail.com>
Date: Mon, 9 Jan 2012 16:48:53 +0000 (-0500)
Subject: gc: put limit on size of exported recursive interface
X-Git-Tag: weekly.2012-01-15~125
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=aa63a928ea6b2fb6b2edb10fd8d98c98f20d5274;p=gostls13.git

gc: put limit on size of exported recursive interface

Prevents edge-case recursive types from consuming excessive memory.

Fixes #1909.

R=golang-dev, lvd, rsc
CC=golang-dev
https://golang.org/cl/5504108
---

diff --git a/src/cmd/gc/fmt.c b/src/cmd/gc/fmt.c
index f3be53c8fb..3013d0d329 100644
--- a/src/cmd/gc/fmt.c
+++ b/src/cmd/gc/fmt.c
@@ -1450,7 +1450,7 @@ Tconv(Fmt *fp)
 	if(t == T)
 		return fmtstrcpy(fp, "<T>");
 
-	if(t->trecur > 4)
+	if(t->trecur > 4 || fp->nfmt > 1000)
 		return fmtstrcpy(fp, "<...>");
 
 	t->trecur++;