add/update test

Author: devnexen

ext/gmp/tests/gh16368.phpt

@@ -0,0 +1,12 @@
+--TEST--
+Bug GH-16368: gmp_init on first argument as null.
+--EXTENSIONS--
+gmp
+--FILE--
+<?php
+gmp_init($inexistent);
+?>
+--EXPECTF--
+Warning: Undefined variable $inexistent in %s on line %d
+
+Deprecated: gmp_init(): Passing null to parameter #1 ($num) of type string|int is deprecated in %s on line %d

ext/gmp/tests/gmp_strict_types.phpt

@@ -53,5 +53,5 @@ object(GMP)#2 (1) {
 gmp_abs(): Argument #1 ($num) must be of type GMP|string|int, float given
 gmp_abs(): Argument #1 ($num) must be of type GMP|string|int, bool given
 gmp_abs(): Argument #1 ($num) must be of type GMP|string|int, bool given
-gmp_abs(): Argument #1 ($num) must be of type GMP|string|int, null given
+Number must be of type GMP|string|int, null given
 gmp_abs(): Argument #1 ($num) must be of type GMP|string|int, array given