Fixed bug #62081

Constructor of IntlDateFormatter would leak if called twice.

Made calling it more than once error out before starting
using resources.

ext/intl/dateformat/dateformat.c

@@ -100,6 +100,13 @@ static void datefmt_ctor(INTERNAL_FUNCTION_PARAMETERS)
 
 	INTL_CHECK_LOCALE_LEN_OBJ(locale_len, return_value);
 	DATE_FORMAT_METHOD_FETCH_OBJECT;
+
+	if (DATE_FORMAT_OBJECT(dfo) != NULL) {
+		intl_errors_set(INTL_DATA_ERROR_P(dfo), U_ILLEGAL_ARGUMENT_ERROR,
+				"datefmt_create: cannot call constructor twice", 0 TSRMLS_CC);
+		return;
+	}
+
 	/* Convert pattern (if specified) to UTF-16. */
 	if( pattern_str && pattern_str_len>0 ){
 		intl_convert_utf8_to_utf16(&svalue, &slength, pattern_str, pattern_str_len, &INTL_DATA_ERROR_CODE(dfo));
@@ -169,6 +176,8 @@ PHP_FUNCTION( datefmt_create )
  */
 PHP_METHOD( IntlDateFormatter, __construct )
 {
+	/* return_value param is being changed, therefore we will always return
+	 * NULL here */
 	return_value = getThis();
 	datefmt_ctor(INTERNAL_FUNCTION_PARAM_PASSTHRU);
 }

ext/intl/tests/bug62081.phpt

@@ -0,0 +1,14 @@
+--TEST--
+Bug #62081: IntlDateFormatter leaks memory if called twice
+--SKIPIF--
+<?php
+if (!extension_loaded('intl'))
+	die('skip intl extension not enabled');
+--FILE--
+<?php
+ini_set('intl.error_level', E_WARNING);
+$x = new IntlDateFormatter(1,1,1,1,1);
+var_dump($x->__construct(1,1,1,1,1));
+--EXPECTF--
+Warning: IntlDateFormatter::__construct(): datefmt_create: cannot call constructor twice in %s on line %d
+NULL