- Fixed bug #50555 (DateTime::sub() allows 'relative' time modifications).

diff --git a/ext/date/php_date.c b/ext/date/php_date.c
index cf418d60ac3a49db0e0a2828e4ec421156da5997..521aa7edddf35d0584f23f00bcd2a0f666148283 100644 (file)
--- a/ext/date/php_date.c
+++ b/ext/date/php_date.c
@@ -2980,6 +2980,11 @@ PHP_FUNCTION(date_sub)
        intobj = (php_interval_obj *) zend_object_store_get_object(interval TSRMLS_CC);
        DATE_CHECK_INITIALIZED(intobj->initialized, DateInterval);
 
+       if (intobj->diff->have_special_relative) {
+               php_error_docref(NULL TSRMLS_CC, E_WARNING, "Only non-special relative time specifications are supported for subtraction");
+               return;
+       }
+
        if (intobj->diff->invert) {
                bias = -1;
        }

diff --git a/ext/date/tests/bug50055.phpt b/ext/date/tests/bug50055.phpt
new file mode 100644 (file)
index 0000000..907bb93
--- /dev/null
+++ b/ext/date/tests/bug50055.phpt
@@ -0,0 +1,30 @@
+--TEST--
+Bug #50555 (DateTime::sub() allows 'relative' time modifications).
+--FILE--
+<?php
+$now = '2010-03-07 13:21:38 UTC';
+//positive DateInterval
+$da1 = date_create( $now );
+$ds1 = date_create( $now );
+$i = DateInterval::createFromDateString('third Tuesday of next month');
+echo $da1->format( DateTime::ISO8601 ), "\n";
+echo date_add($da1, $i)->format( DateTime::ISO8601 ), "\n";
+date_sub($ds1, $i);
+
+//negative DateInterval
+$da2 = date_create( $now );
+$ds2 = date_create( $now );
+$i2 = DateInterval::createFromDateString('third Tuesday of last month');
+echo $da2->format( DateTime::ISO8601 ), "\n";
+echo date_add($da2, $i2)->format( DateTime::ISO8601 ), "\n";//works
+date_sub($ds2, $i);
+?>
+--EXPECTF--
+2010-03-07T13:21:38+0000
+2010-04-20T13:21:38+0000
+
+Warning: date_sub(): Only non-special relative time specifications are supported for subtraction in %sbug50055.php on line 9
+2010-03-07T13:21:38+0000
+2010-02-16T13:21:38+0000
+
+Warning: date_sub(): Only non-special relative time specifications are supported for subtraction in %sbug50055.php on line 17