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-rw-r--r--Test/B02typeset.ztst17
1 files changed, 17 insertions, 0 deletions
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