From 75e58d8c3342f26cd85fea11d176f3a86cde1356 Mon Sep 17 00:00:00 2001
From: Thomas Bereknyei <tomberek@gmail.com>
Date: Mon, 1 Mar 2021 14:24:12 -0500
Subject: [PATCH] error if unable to modify self

---
 ape/ape.S | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/ape/ape.S b/ape/ape.S
index 126b2df95..f7538a23a 100644
--- a/ape/ape.S
+++ b/ape/ape.S
@@ -573,6 +573,8 @@ apesh:	.ascii	"'\n#'\"\n"			# sixth edition shebang
 	.shstub	    ape_elf_shstrndx,2		#  3e: e_shstrndx
 	.ascii	    "' >&7\n"
 	.ascii	  "exec 7<&-\n"
+	.ascii	"else\n"
+	.ascii	  "exit 1\n"
 	.ascii	"fi\n"
 	.ascii	"exec \"$0\" \"$@\"\n"		# etxtbsy tail recursion
 	.ascii	"R=$?\n"			# architecture optimistic