From 457825f77a7c7286647ee888a1000a6bb12ca8fc Mon Sep 17 00:00:00 2001
From: Denys Vlasenko
Date: Sun, 6 Jun 2021 12:07:11 +0200
Subject: shells: do not allow bare "read" in non-bash compat configs

    On Sat, Feb 9, 2019 Cristian Ionescu-Idbohrn wrote:
    > In my case (at work), I have to watch and prevent people from doing
    > unportable things.  For me, that's a burden.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
---
 shell/ash.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'shell/ash.c')

diff --git a/shell/ash.c b/shell/ash.c
index 05c4795..bcf7a34 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -14161,6 +14161,10 @@ readcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
 		}
 	}
 
+	if (!ENABLE_ASH_BASH_COMPAT && !argptr) {
+		bb_simple_error_msg("read: need variable name");
+		return 1;
+	}
 	params.argv = argptr;
 	params.setvar = setvar0;
 	params.ifs = bltinlookup("IFS"); /* can be NULL */
-- 
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