From 046eeb9033ac396ed1d256b7366ad6224180582f Mon Sep 17 00:00:00 2001
From: anton <anton@openbsd.org>
Date: Thu, 22 Jun 2017 18:05:31 +0000
Subject: [PATCH] Make sure to abort loops when pressing ^C in csh.

Regression found by deraadt@
---
 bin/csh/file.c           | 7 ++++++-
 regress/bin/csh/filec.sh | 1 +
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/bin/csh/file.c b/bin/csh/file.c
index 867dee4b2f6..68b0c16e218 100644
--- a/bin/csh/file.c
+++ b/bin/csh/file.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: file.c,v 1.26 2017/06/21 19:36:23 anton Exp $	*/
+/*	$OpenBSD: file.c,v 1.27 2017/06/22 18:05:31 anton Exp $	*/
 /*	$NetBSD: file.c,v 1.11 1996/11/08 19:34:37 christos Exp $	*/
 
 /*-
@@ -224,6 +224,11 @@ static int
 cl_abort(struct cmdline *cl, int c)
 {
 	cl_visc(cl, c);
+
+	/* Abort while/foreach loop prematurely. */
+	if (whyles)
+		kill(getpid(), SIGINT);
+
 	cl_putc(cl, '\n');
 	cl->len = cl->cursor = 0;
 	cl->flags |= CL_PROMPT;
diff --git a/regress/bin/csh/filec.sh b/regress/bin/csh/filec.sh
index 3b7dc5bd58a..338a91762b7 100644
--- a/regress/bin/csh/filec.sh
+++ b/regress/bin/csh/filec.sh
@@ -76,6 +76,7 @@ testseq "\t\0177" " %         \b\b\b\b\b\b\b\b        \b\b\b\b\b\b\b\b"
 # VINTR: Abort line.
 testseq "\0003" " % ^C\r\n % "
 testseq "ab\0003" " % ab^C\r\n % "
+testseq "foreach i ()\n\0003a" " % foreach i ()\r\n? ^C\r\r\n % a"
 
 # VKILL: Kill line.
 testseq "\0025" " % "
-- 
2.20.1