commit 21c4c72798b0bf2fb9a2761744bc41e89fc87fcc
from: rsc <devnull@localhost>
date: Tue Aug 29 20:15:01 2006 UTC

Aviod seg fault when no file

commit - c7c29d26b7f9bcd735779859211bf525f007078e
commit + 21c4c72798b0bf2fb9a2761744bc41e89fc87fcc
blob - ba69be6e22da542cd8c57394889b86312dcbd244
blob + e86509584f8e05b691691c33a10e17b7882f4e55
--- src/cmd/sam/shell.c
+++ 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);
 }