From 6f7a0096496a5a9e90638dc01e947015cc776110 Mon Sep 17 00:00:00 2001
From: Denys Vlasenko
Date: Tue, 9 Jun 2020 01:33:54 +0200
Subject: awk: disallow "str"++, closes bug 12981

function                                             old     new   delta
parse_expr                                           887     896      +9

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
---
 testsuite/awk.tests | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'testsuite')

diff --git a/testsuite/awk.tests b/testsuite/awk.tests
index b500829..87f6b50 100755
--- a/testsuite/awk.tests
+++ b/testsuite/awk.tests
@@ -390,5 +390,13 @@ testing 'awk negative field access' \
 	'' \
 	'anything'
 
+# was misinterpreted as (("str"++) i) instead of ("str" (++i))
+# (and was executed: "str"++ is "0", thus concatenating "0" and "1"):
+testing 'awk do not allow "str"++' \
+	'awk -v i=1 "BEGIN {print \"str\" ++i}"' \
+	"str2\n" \
+	'' \
+	'anything'
+
 
 exit $FAILCOUNT
-- 
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