diff --git a/ext/iconv/tests/iconv_strpos_error_001.phpt b/ext/iconv/tests/iconv_strpos_error_001.phpt
new file mode 100644
index 0000000000000..a96035b9f45b7
--- /dev/null
+++ b/ext/iconv/tests/iconv_strpos_error_001.phpt
@@ -0,0 +1,14 @@
+--TEST--
+iconv_strpos() - test against PHP's defaults internal encoding. Non windows systems.
+--EXTENSIONS--
+iconv
+--FILE--
+<?php
+$large_enconding = str_repeat("X", 256);
+ini_set("default_charset", $large_enconding);
+var_dump(iconv_strpos('Hello, world', 'world', -2));
+?>
+--EXPECTF--
+%A
+Warning: iconv_strpos(): Wrong encoding, conversion from %s
+bool(false)