Update copyright headers to 2017

Use SEND_USER for CONST|TMP as well

Otherwise we're missing the "expected to be a reference, value
given" warning that appears for ordinary calls to call_user_func().

Also updat

Use SEND_USER for CONST|TMP as well

Otherwise we're missing the "expected to be a reference, value
given" warning that appears for ordinary calls to call_user_func().

Also update an UPGRADING note with recent changes wrt
call_user_func().

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

Introduce new CHECK_VAR instruction to keep warnings about undefined variables.

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

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Split ZEND_SEND_VAR_NO_REF into ZEND_SEND_VAR_NO_REF and ZEND_SEND_VAR_NO_REF_EX (similar to ZEND_SEND_VAL) and remove ZEND_ARG_* flags.

Fixed bug #72213 (Finally leaks on nested exceptions).

Squashed commit of the following:

commit 8461b0407fc9eab0869d43b84e6a92ba2fe06997
Author: Dmitry Stogov <dmitry@zend.com>

Fixed bug #72213 (Finally leaks on nested exceptions).

Squashed commit of the following:

commit 8461b0407fc9eab0869d43b84e6a92ba2fe06997
Author: Dmitry Stogov <dmitry@zend.com>
Date: Wed May 25 00:34:42 2016 +0300

Rmoved zend_try_catch_element.parent and walk through op_array.try_catch_array backward from the current try_cacth_offset.

commit 0c71e249649bed178bfbef30bb3e63c57f07af05
Author: Dmitry Stogov <dmitry@zend.com>
Date: Wed May 25 00:04:53 2016 +0300

Move SAVE_OPLINE() to its original place

commit 111432a4df738fcd65878a42f23194dc3c4983a2
Author: Dmitry Stogov <dmitry@zend.com>
Date: Wed May 25 00:01:10 2016 +0300

Separate the common part of ZEND_HANDLE_EXCEPTION and FAST_RET into zend_dispatch_try_catch_finally_helper.

commit 4f21c06c2ec17819a708bc037f318784554a6ecd
Author: Nikita Popov <nikic@php.net>
Date: Tue May 24 14:55:27 2016 +0200

Improve finally fix

commit da5c7274997b8308e682b5bf280124e3a1483086
Author: Dmitry Stogov <dmitry@zend.com>
Date: Tue May 24 10:36:08 2016 +0300

Fixed Zend/tests/try/bug70228_3.phpt and Zend/tests/try/bug70228_4.phpt

commit cfcedf2fb4f4fc1f7de9f7d53a3037fed7795f19
Author: Dmitry Stogov <dmitry@zend.com>
Date: Tue May 24 02:59:27 2016 +0300

Added test

commit 4c6aa93d43da941eb4fda15b48154bfb104bdc04
Author: Dmitry Stogov <dmitry@zend.com>
Date: Tue May 24 00:38:20 2016 +0300

Added tests

commit 8a8f4704b0eca2e460d42c1f253a363b0db8e510
Author: Dmitry Stogov <dmitry@zend.com>
Date: Mon May 23 23:27:34 2016 +0300

Fixed bug #72213 (Finally leaks on nested exceptions)

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Fixed bug #72188 (Nested try/finally blocks losing return value)

Eliminated checks for (func->op_array.fn_flags & ZEND_ACC_GENERATOR) in fast path of DO_FCALL* handlers.
This slightly improves calls to regular function and method calls in cost of a bit slower

Eliminated checks for (func->op_array.fn_flags & ZEND_ACC_GENERATOR) in fast path of DO_FCALL* handlers.
This slightly improves calls to regular function and method calls in cost of a bit slower generator initialization.
Separate call frame for generators, allocated on heap, now created by ZEND_GENERATOR_CREATE instruction.

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Evaluate arguments of new for classes without ctor

ML: http://markmail.org/message/4b3mk7jid64zvz34

Allow specifying keys on list() elements

Squashed commit of the following:

commit 0361dbe35616722fbe51b446ab7b43a9ca01f455
Author: Andrea Faulds <ajf@ajf.me>
Date: Fri Mar

Allow specifying keys on list() elements

Squashed commit of the following:

commit 0361dbe35616722fbe51b446ab7b43a9ca01f455
Author: Andrea Faulds <ajf@ajf.me>
Date: Fri Mar 25 16:59:20 2016 +0000

UPGRADING and NEWS

commit dca9d4a36c845bfe4fbcb9db18e184469110ea5a
Author: Andrea Faulds <ajf@ajf.me>
Date: Fri Mar 25 16:45:18 2016 +0000

Add tests contributed by @jesseschalken

commit e557f77eab692ed8bb18dbdff48777d80b6f6cbd
Author: Andrea Faulds <ajf@ajf.me>
Date: Fri Mar 25 16:44:51 2016 +0000

Rebuild VM

commit 70942e4c3cbb6b4fe6305b27e1e1b2bed78e76df
Author: Andrea Faulds <ajf@ajf.me>
Date: Wed Feb 24 13:12:26 2016 +0000

Add test for evaluation order of nested list() keys

commit ed3592e80c5231d9e9a95558aa768a42b75bdebc
Author: Andrea Faulds <ajf@ajf.me>
Date: Wed Feb 24 12:42:04 2016 +0000

Add test for evaluation order

commit 589756cbcccbb4702c90b5aa9c091af446058ca1
Author: Andrea Faulds <ajf@ajf.me>
Date: Tue Jan 19 17:29:34 2016 +0000

Allow arbitrary expressions for key

commit 3f622077c32fcd82fcf27a41bd0f22e2552ec4c5
Author: Andrea Faulds <ajf@ajf.me>
Date: Tue Jan 19 17:45:10 2016 +0000

Remove compile-time HANDLE_NUMERIC (see bug #63217)

commit bab758119aec63289a2c5bef6a5f90a7bc6441a2
Author: Andrea Faulds <ajf@ajf.me>
Date: Sun Jan 17 01:20:26 2016 +0000

Handle numeric strings

commit 14bfe93ddc34d1175bccb42a158be8842c472a9c
Author: Andrea Faulds <ajf@ajf.me>
Date: Sun Jan 17 01:09:36 2016 +0000

Allow trailing comma

commit f4c8b2cb30fc074b15b5f7aabef5444382403b5d
Author: Andrea Faulds <ajf@ajf.me>
Date: Sat Jan 16 23:47:11 2016 +0000

Add tests

commit 0085884a6176c3a981b53131fbb4fa0c44db2670
Author: Andrea Faulds <ajf@ajf.me>
Date: Sat Jan 16 22:24:23 2016 +0000

Handle non-integer/string opcodes

commit e572d2d0ada6a64b36a2c6f5e8cb57439f51b55e
Author: Andrea Faulds <ajf@ajf.me>
Date: Sat Jan 16 21:10:33 2016 +0000

Disallow mixing keyed and unkeyed list() elements

commit cede13ccfe0c486591fa84764271ac1b8cb90d0b
Author: Andrea Faulds <ajf@ajf.me>
Date: Sun Jan 10 20:46:44 2016 +0000

list() with keys (no foreach or tests)

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Mark op1 of INIT_FCALL as NUM

Introduced BIND_STATIC opcode instead of FETCH_R/FETCH_W(static)+ASSIGN/ASSIGN_REF (similar to BIND_GLOBAL).
In the future we may refer to static variable by index instead of name, to eliminate h

Introduced BIND_STATIC opcode instead of FETCH_R/FETCH_W(static)+ASSIGN/ASSIGN_REF (similar to BIND_GLOBAL).
In the future we may refer to static variable by index instead of name, to eliminate hash lookup.

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Merge branch 'PHP-7.0'

bump year which is missed in rev 49493a2

Introduce BIND_LEXICAL

This opcodes inserts a local CV into the closure static variable
table. This replaces the previous mechanism of having static
variables marked as LEXICAL, whic

Introduce BIND_LEXICAL

This opcodes inserts a local CV into the closure static variable
table. This replaces the previous mechanism of having static
variables marked as LEXICAL, which perform a symtable lookup
during copying.

This means a) functions which contain closures no longer have to
rebuild their symtable (better performance) and b) we can now track
used variables in SSA.

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Remove uses of VARs in extended_value

The DECLARE_(ANON_)INHERITED_CLASS(_DELAYED) opcodes were
referencing the parent ce VAR through extended_value. This is
hacky and we can't track

Remove uses of VARs in extended_value

The DECLARE_(ANON_)INHERITED_CLASS(_DELAYED) opcodes were
referencing the parent ce VAR through extended_value. This is
hacky and we can't track the def-use chain in SSA.

To avoid this, the layout of declaration opcodes is changed
as follows: op1 points to the lcname and rtd_key literals, in
that order. (For anon/lambda declarations only one of lcname or
rtd_key is present.) This frees up op2, which is now used to
reference the parent ce VAR in inheriting declarations. The
jmp offset for anon class declarations is moved frop op2 to
extended_value.

The changes were applied both to class and function declarations
to keep everything symmetric.

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Describe special meaning of IS_UNUSED oprerand

Use more compact description encoding schema to free some bits

Improve Optimizer debugging facility (print the meaning of extended_value)

Changed ZEND_FREE.op2.num and ZEND_FE_FREE.op2.num back to use live_range_offset (try_catch_offset does't work)

Changed meaning of "op2" for ZEND_FREE, ZEND_FE_FREE, ZEND_FAST_CALL, ZEND_FAST_RET.
Previously it was an instruction number.
Now it's an index in op_array->try_cacth_array[].

Changed ZEND_CLONE->extended_value meaning to relative offset (previously it was absolute opline number)

Fixed few issues:

- Added ZEND_VM_LAST_OPCODE macro
- Use better names LINE->OPLINE, REL_LINE->REL_OPLINE, FCALL->FAST_CALL, FRET->FAST_RET
- Added ISSET flag to extended value of ZE

Fixed few issues:

- Added ZEND_VM_LAST_OPCODE macro
- Use better names LINE->OPLINE, REL_LINE->REL_OPLINE, FCALL->FAST_CALL, FRET->FAST_RET
- Added ISSET flag to extended value of ZEND_ISSET_ISEMPTY_VAR opcode

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Added zend_get_opcode_flags() function to get information about opcode operands and extended_value meaning