From 21c4c72798b0bf2fb9a2761744bc41e89fc87fcc Mon Sep 17 00:00:00 2001
From: rsc <devnull@localhost>
Date: Tue, 29 Aug 2006 20:15:01 +0000
Subject: Aviod seg fault when no file

---
 src/cmd/sam/shell.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'src/cmd/sam')

diff --git a/src/cmd/sam/shell.c b/src/cmd/sam/shell.c
index ba69be6e..e8650958 100644
--- a/src/cmd/sam/shell.c
+++ b/src/cmd/sam/shell.c
@@ -12,7 +12,10 @@ void
 setname(File *f)
 {
 	char buf[1024];
-	snprint(buf, sizeof buf, "%.*S", f->name.n, f->name.s);
+	if(f)
+		snprint(buf, sizeof buf, "%.*S", f->name.n, f->name.s);
+	else
+		buf[0] = 0;
 	putenv("samfile", buf);
 }
 
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