Memory corruptions related to AST patch

Hi Nikita, On weekend I ran PHP test suite with valgrind and opcache. I noticed few new tests failures, that most probably introduced by AST patch. Bug #21820 ("$arr['foo']" generates bogus E_NOTICE, should be E_PARSE) [tests/lang/bug21820.phpt] Bug #66286: Incorrect object comparison with inheritance [Zend/tests/bug66286.phpt] unbraced complex variable replacement test (heredoc) [Zend/tests/heredoc_005.phpt] isset() can be used on dereferences of temporary expressions [Zend/tests/varSyntax/issetOnTemp.phpt] I suppose they indicate two different problems. One of them indicates that some zvals became a subject for GC, however they won't before. This may be fixed in opcache, but it's better to understand what was changed. Please take a look. Thanks. Dmitry.