Fix leaks in yield from error conditions

Conflicts:
Zend/zend_vm_execute.h

Fix leak for by-ref assign to overloaded object

Conflicts:
Zend/zend_vm_execute.h

Fixed memory leak

Fixed memory leak

Unified behavior of modification of returned by reference value in finnally code.

Removed wrong warning

Fixed bug #29368 (The destructor is called when an exception is thrown from the constructor).

Fixed bug #72347 (VERIFY_RETURN type casts visible in finally)
Fixed bug #72216 (Return by reference with finally is not memory safe)
Fixed bug #72215 (Wrong return value if var modified in f

Fixed bug #72347 (VERIFY_RETURN type casts visible in finally)
Fixed bug #72216 (Return by reference with finally is not memory safe)
Fixed bug #72215 (Wrong return value if var modified in finally)

show more ...

Fixed bug #71539 (Memory error on $arr[$a] =& $arr[$b] if RHS rehashes)

Fixed bug #72543 (Different references behavior comparing to PHP 5)

Fixed bug #72523 (dtrace issue with reflection (failed test))

Introduce new CHECK_VAR instruction to keep warnings about undefined variables.

Make call_user_func() on reference args consistent

Previously reference arguments were allowed if call_user_func()
was compiled to SEND_USER and not otherwise. Make it consistent
by

Make call_user_func() on reference args consistent

Previously reference arguments were allowed if call_user_func()
was compiled to SEND_USER and not otherwise. Make it consistent
by always forbidding them.

show more ...

Fixed executor without global register variales (gcc warnings or clang errors)

Added ability to make non-local control transfer through interrupt function

Turn safe timeout handling into general interrupt handling ability.

Fixed compilation warnings

Added ZEND_ATTRIBUTE_FORMAT to some middind functions.
"%p" replaced by ZEND_LONG_FMT to avoid compilation warnings.
Fixed most incorrect use cases of format specifiers.

Implemented RFC: Replace "Missing argument" warning with "Too few arguments" exception
Squashed commit of the following:

commit 8b45fa2acb8cd92542a39e1e4720fe1f4fabc26c
Author: Dmitr

Implemented RFC: Replace "Missing argument" warning with "Too few arguments" exception
Squashed commit of the following:

commit 8b45fa2acb8cd92542a39e1e4720fe1f4fabc26c
Author: Dmitry Stogov <dmitry@zend.com>
Date: Thu Jun 16 01:52:50 2016 +0300

Separate slow path of ZEND_RECV into a cold function.

commit 9e18895ee59c64c93a96b1ba3061355c4663e962
Author: Dmitry Stogov <dmitry@zend.com>
Date: Wed Jun 15 23:26:28 2016 +0300

Required argument can't be IS_UNDEF anymore.

commit 662db66e3943d4455c65e4f987bb54abf724ecb2
Author: Dmitry Stogov <dmitry@zend.com>
Date: Tue May 31 17:14:50 2016 +0300

Replace "Missing argument" warning by "Too few arguments" exception.

show more ...

Implemented RFC: Fix inconsistent behavior of $this variable
Squashed commit of the following:

commit bdd3b6895c3ce3eacfcf7d4bf4feb8dfa61801fd
Author: Dmitry Stogov <dmitry@zend.com>

Implemented RFC: Fix inconsistent behavior of $this variable
Squashed commit of the following:

commit bdd3b6895c3ce3eacfcf7d4bf4feb8dfa61801fd
Author: Dmitry Stogov <dmitry@zend.com>
Date: Thu Jun 16 00:19:42 2016 +0300

Fixed GOTO VM

commit 2f1d7c8b89ce821086d357cf65f629f040a85c03
Author: Dmitry Stogov <dmitry@zend.com>
Date: Wed Jun 15 21:01:57 2016 +0300

Removed unused variable

commit cf749c42b0b1919f70b1e7d6dcbfff76899506af
Author: Dmitry Stogov <dmitry@zend.com>
Date: Wed Jun 15 19:06:16 2016 +0300

Protection from $this reassign through mb_parse_str()

commit 59a9a6c83c66b666971e57f1173b33a422166efd
Author: Dmitry Stogov <dmitry@zend.com>
Date: Wed Jun 15 18:14:50 2016 +0300

Added type inference rule for FETCH_THIS opcode

commit 73f8d14a856f14a461430b3c7534ab2ce870cbf6
Author: Dmitry Stogov <dmitry@zend.com>
Date: Wed Jun 15 18:11:18 2016 +0300

Restored PHP-7 behavior of isset($this->foo).
It throws exception if not in object context.
Removed useless opcode handlers.

commit fa0881381e8ae97e022ae5d1ec0851c952f33c82
Author: Dmitry Stogov <dmitry@zend.com>
Date: Tue May 31 12:25:47 2016 +0300

Changed "Notice: Undefined variable: this" into "Exception: Using $this when not in object context".

commit e32cc528c0f2c97963d8ec83eff0269f1f45af18
Author: Dmitry Stogov <dmitry@zend.com>
Date: Tue May 24 02:02:43 2016 +0300

Throw exception on attempt to re-assign $this through extract() and parse_str().

commit 41f1531b52113ec8a4c208aa6b9ef50f1386bb3f
Author: Dmitry Stogov <dmitry@zend.com>
Date: Mon May 23 22:18:36 2016 +0300

Fixed inconsistent $this behavior

show more ...

Added specialized handlers for SEND_VAR/SEND_VAR_EX opcodes.

Delay IS_ERROR checks

typo

Followup for bug #53432

Assign-ops and nested accesses now get the same treatment.

cleanup