From bf258a1c07a9cf1119f83d1d15310b02b94f4d67 Mon Sep 17 00:00:00 2001
From: Peter Stephenson <pws@zsh.org>
Date: Wed, 29 Apr 2015 15:54:49 +0100
Subject: 34992: POSIX fix for readonly variables.

With POSIXBUILTINS, variables can be marked readonly if unset.
Also, variables can't have the readonly flag removed.
---
 Test/B02typeset.ztst | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'Test')

diff --git a/Test/B02typeset.ztst b/Test/B02typeset.ztst
index 51ebc6535..f4fb8ecb9 100644
--- a/Test/B02typeset.ztst
+++ b/Test/B02typeset.ztst
@@ -468,3 +468,20 @@
 0:retying arrays to same array works
 >foo bar
 >goo car
+
+ (
+   setopt POSIXBUILTINS
+   readonly pbro
+   print ${+pbro} >&2
+   (typeset pbro=3)
+   (pbro=4)
+   typeset -r pbro        # idempotent (no error)...
+   print ${+pbro} >&2     # ...so still readonly...
+   typeset +r pbro        # ...can't turn it off
+ )
+1:Readonly with POSIX_BUILTINS
+?0
+?(eval):5: read-only variable: pbro
+?(eval):6: read-only variable: pbro
+?0
+?(eval):9: read-only variable: pbro
-- 
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