--- ./work/dwarf-20070703/dwarfdump/dwarfdump.c	2007-07-03 23:37:21.000000000 +0000
+++ /tmp/dwarfdump.c	2008-01-09 23:06:57.000000000 +0000
@@ -223,6 +223,10 @@
 	cmd = elf_next(elf);
 	elf_end(elf);
     }
+    if (elf == NULL) {
+    	fprintf(stderr, "Error: %s\n", elf_errmsg(elf_errno()));
+	exit(FAILED);
+    }
     elf_end(arf);
     if (check_error)
 	return FAILED;