datefmt_parse/datefmt_localtime references type system fixes

Closes GH-18441.

Author: nielsdos

NEWS

@@ -7,6 +7,9 @@ PHP                                                                        NEWS
     inaccurate sunrise and sunset times, but other calculated times are
     correct) (JiriJozif).
 
+- Intl:
+  . datefmt_parse/datefmt_localtime references type system fixes. (nielsdos)
+
 - SPL:
   . Fixed bug GH-18421 (Integer overflow with large numbers in LimitIterator).
     (nielsdos)

ext/intl/dateformat/dateformat_parse.c

@@ -136,9 +136,9 @@ PHP_FUNCTION(datefmt_parse)
 	DATE_FORMAT_METHOD_FETCH_OBJECT;
 
 	if (z_parse_pos) {
-		zend_long long_parse_pos;
-		ZVAL_DEREF(z_parse_pos);
-		long_parse_pos = zval_get_long(z_parse_pos);
+		zval *z_parse_pos_tmp = z_parse_pos;
+		ZVAL_DEREF(z_parse_pos_tmp);
+		zend_long long_parse_pos = zval_get_long(z_parse_pos_tmp);
 		if (ZEND_LONG_INT_OVFL(long_parse_pos)) {
 			intl_error_set_code(NULL, U_ILLEGAL_ARGUMENT_ERROR);
 			intl_error_set_custom_msg(NULL, "String index is out of valid range.", 0);
@@ -151,8 +151,7 @@ PHP_FUNCTION(datefmt_parse)
 	}
 	internal_parse_to_timestamp( dfo, text_to_parse, text_len, z_parse_pos?&parse_pos:NULL, return_value);
 	if(z_parse_pos) {
-		zval_ptr_dtor(z_parse_pos);
-		ZVAL_LONG(z_parse_pos, parse_pos);
+		ZEND_TRY_ASSIGN_REF_LONG(z_parse_pos, parse_pos);
 	}
 }
 /* }}} */
@@ -177,9 +176,9 @@ PHP_FUNCTION(datefmt_localtime)
 	DATE_FORMAT_METHOD_FETCH_OBJECT;
 
 	if (z_parse_pos) {
-		zend_long long_parse_pos;
-		ZVAL_DEREF(z_parse_pos);
-		long_parse_pos = zval_get_long(z_parse_pos);
+		zval *z_parse_pos_tmp = z_parse_pos;
+		ZVAL_DEREF(z_parse_pos_tmp);
+		zend_long long_parse_pos = zval_get_long(z_parse_pos_tmp);
 		if (ZEND_LONG_INT_OVFL(long_parse_pos)) {
 			intl_error_set_code(NULL, U_ILLEGAL_ARGUMENT_ERROR);
 			intl_error_set_custom_msg(NULL, "String index is out of valid range.", 0);
@@ -192,8 +191,7 @@ PHP_FUNCTION(datefmt_localtime)
 	}
 	internal_parse_to_localtime( dfo, text_to_parse, text_len, z_parse_pos?&parse_pos:NULL, return_value);
 	if (z_parse_pos) {
-		zval_ptr_dtor(z_parse_pos);
-		ZVAL_LONG(z_parse_pos, parse_pos);
+		ZEND_TRY_ASSIGN_REF_LONG(z_parse_pos, parse_pos);
 	}
 }
 /* }}} */

ext/intl/tests/datefmt_parse_localtime_references.phpt

@@ -0,0 +1,35 @@
+--TEST--
+datefmt_parse/datefmt_localtime references type system
+--EXTENSIONS--
+intl
+--FILE--
+<?php
+
+class Test {
+    public float $prop = 1.0;
+}
+
+$test = new Test;
+$offset1 =& $test->prop;
+$offset2 =& $test->prop;
+
+$fmt = datefmt_create(
+    'en_US',
+    IntlDateFormatter::FULL,
+    IntlDateFormatter::FULL,
+    'America/Los_Angeles',
+    IntlDateFormatter::GREGORIAN
+);
+datefmt_localtime($fmt, 'Wednesday, December 31, 1969 4:00:00 PM PT', $offset1);
+datefmt_parse($fmt, 'Wednesday, December 31, 1969 4:00:00 PM PT', $offset2);
+var_dump($offset1, $offset2);
+var_dump($test);
+
+?>
+--EXPECT--
+float(1)
+float(1)
+object(Test)#1 (1) {
+  ["prop"]=>
+  &float(1)
+}