From 29b6ad33305dc4a69940d6f636d6f129931cf9f1 Mon Sep 17 00:00:00 2001
From: BurnZeZ <devnull@localhost>
Date: Thu, 21 Nov 2019 16:44:41 +0000
Subject: grep: error if sbrk fails

---
 sys/src/cmd/grep/sub.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sys/src/cmd/grep/sub.c b/sys/src/cmd/grep/sub.c
index 423ddf4c0..775c1cc14 100644
--- a/sys/src/cmd/grep/sub.c
+++ b/sys/src/cmd/grep/sub.c
@@ -11,10 +11,14 @@ mal(int n)
 	if(m < n) {
 		if(n > Nhunk) {
 			v = sbrk(n);
+			if(v == (void*)-1)
+				error("sbrk");
 			memset(v, 0, n);
 			return v;
 		}
 		s = sbrk(Nhunk);
+		if(s == (void*)-1)
+			error("sbrk");
 		m = Nhunk;
 	}
 	v = s;
-- 
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