From 69888c3ff1f2301ead8e37b23ff8481d475e29d2 Mon Sep 17 00:00:00 2001
From: "Christoph M. Becker" <cmbecker69@gmx.de>
Date: Sat, 2 May 2020 16:57:24 +0200
Subject: Fix #79467: data:// wrappers are writable

Despite the docs claiming that data: wrappers would not be writable[1],
they are implemented as writing to a memory stream.  That does not seem
to be particularly sensible, so we disallow writing altogether.

[1] <https://www.php.net/manual/en/wrappers.data.php#refsect1-wrappers.data-options>
---
 UPGRADING | 1 +
 1 file changed, 1 insertion(+)

(limited to 'UPGRADING')

diff --git a/UPGRADING b/UPGRADING
index fc832ba2e3..5345111acc 100644
--- a/UPGRADING
+++ b/UPGRADING
@@ -181,6 +181,7 @@ PHP 8.0 UPGRADE NOTES
   . Disabled functions are now treated exactly like non-existent functions.
     Calling a disabled function will report it as unknown, and redefining a
     disabled function is now possible.
+  . data: wrappers are no longer writable, what matches the documented behavior.
 
 - COM:
   . Removed the ability to import case-insensitive constants from type
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