From 219cf22d6863a21a7378fc5481bb05bbb6edd2dc Mon Sep 17 00:00:00 2001
From: Russ Cox <rsc@swtch.com>
Date: Thu, 13 Mar 2014 18:46:28 -0400
Subject: acme, sam: handle >1GB files correctly

TBR=rsc
https://codereview.appspot.com/74060043
---
 src/cmd/sam/disk.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/cmd/sam/disk.c')

diff --git a/src/cmd/sam/disk.c b/src/cmd/sam/disk.c
index 81c98389..50bbc077 100644
--- a/src/cmd/sam/disk.c
+++ b/src/cmd/sam/disk.c
@@ -75,6 +75,9 @@ disknewblock(Disk *d, uint n)
 		b = blist;
 		blist = b->u.next;
 		b->addr = d->addr;
+		if(d->addr+size < d->addr){
+			panic("temp file overflow");
+		}
 		d->addr += size;
 	}
 	b->u.n = n;
-- 
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