From aa63a928ea6b2fb6b2edb10fd8d98c98f20d5274 Mon Sep 17 00:00:00 2001
From: Lorenzo Stoakes <lstoakes@gmail.com>
Date: Mon, 9 Jan 2012 11:48:53 -0500
Subject: [PATCH] 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
---
 src/cmd/gc/fmt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/cmd/gc/fmt.c b/src/cmd/gc/fmt.c
index f3be53c8fbf..3013d0d3293 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++;