From ea5b38935a17af38a328c8013e7eaf3c8de7ba09 Mon Sep 17 00:00:00 2001
From: Peter Stephenson <pws@zsh.org>
Date: Tue, 5 Sep 2017 13:15:30 +0100
Subject: 41641: Some math operations shouldn't be lvalues.

This includes pre- and post- increment and decrement.  Simply
mark all values after operations as rvalues.
---
 Test/C01arith.ztst | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'Test/C01arith.ztst')

diff --git a/Test/C01arith.ztst b/Test/C01arith.ztst
index 61da763ac..30409adf3 100644
--- a/Test/C01arith.ztst
+++ b/Test/C01arith.ztst
@@ -420,3 +420,16 @@
 0:type of variable when created in arithmetic context
 >integer
 >scalar
+
+  integer a=1
+  print $(( ++a * 2 ))
+  print $(( ++a ))
+  print $(( a++ * 2 ))
+  print $(( a ))
+  print $(( ++a++ * 2 ))
+1: Allow rvalue but not lvalue operations with result of increment
+>4
+>3
+>6
+>4
+?(eval):6: bad math expression: lvalue required
-- 
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