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diff --git a/ext/gd/tests/bug73869.phpt b/ext/gd/tests/bug73869.phpt
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+++ b/ext/gd/tests/bug73869.phpt
@@ -0,0 +1,19 @@
+--TEST--
+Bug #73869 (Signed Integer Overflow gd_io.c)
+--SKIPIF--
+<?php
+if (!extension_loaded('gd')) die('skip gd extension not available');
+?>
+--FILE--
+<?php
+var_dump(imagecreatefromgd2(__DIR__ . DIRECTORY_SEPARATOR . 'bug73869a.gd2'));
+var_dump(imagecreatefromgd2(__DIR__ . DIRECTORY_SEPARATOR . 'bug73869b.gd2'));
+?>
+===DONE===
+--EXPECTF--
+Warning: imagecreatefromgd2(): '%s' is not a valid GD2 file in %s on line %d
+bool(false)
+
+Warning: imagecreatefromgd2(): '%s' is not a valid GD2 file in %s on line %d
+bool(false)
+===DONE=== \ No newline at end of file