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2a286ad599
php-src/NEWS
Dmitry Stogov 2a286ad599 Added goblal optimisation passes based on data flow analyses using SSA form: 
SCCP - Sparse Conditional Constant Propagation, DCE - Dead Code Elimination
and removing of unused local variablesi.

Squashed commit of the following:

commit bf5ac05fc0
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Fri Jul 14 14:26:40 2017 +0300

    Added news entry

commit 4cfa6984b1
Merge: 1cdaaac 1f261d7
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Fri Jul 14 13:30:50 2017 +0300

    Merge branch 'sccp' into dce

    * sccp:
      Bump OCI8 version for recent patch
      WS
      Fix test title
      Ensure that the stream position is kept between reads
      Turn off EXIF_DEBUG so Travis don't complain at me
      Don't add a new line to undefined tags in EXIF_DEBUG mode
      Fix compile error with EXIF_DEBUG
      update NEWS
      disable --with-pcre-valgrind on travis
      fix default args for --with-pcre-valgrind
      Enable valgrind support for PCRE by default in debug builds
      add oniguruma.patch to ease future upgrades
      SIZEOF_SIZE_T doesn't exist on AIX and POWER8 (ppc64le), keep using SIZEOF_LONG

commit 1f261d77cb
Merge: a32a3fb b280ba8
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Fri Jul 14 13:30:39 2017 +0300

    Merge branch 'master' into sccp

    * master:
      Bump OCI8 version for recent patch
      WS
      Fix test title
      Ensure that the stream position is kept between reads
      Turn off EXIF_DEBUG so Travis don't complain at me
      Don't add a new line to undefined tags in EXIF_DEBUG mode
      Fix compile error with EXIF_DEBUG
      update NEWS
      disable --with-pcre-valgrind on travis
      fix default args for --with-pcre-valgrind
      Enable valgrind support for PCRE by default in debug builds
      add oniguruma.patch to ease future upgrades
      SIZEOF_SIZE_T doesn't exist on AIX and POWER8 (ppc64le), keep using SIZEOF_LONG

commit 1cdaaac601
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Fri Jul 14 13:27:12 2017 +0300

    Use generic evalution mechanism for constant functions

commit 75bd92a609
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Fri Jul 14 12:39:05 2017 +0300

    Fixed use-def chain unlinking for "$a = 1; $a += $a;"

commit 7d7746814d
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Fri Jul 14 12:38:29 2017 +0300

    Enable duplicate predecessors verification

commit 6b1667f206
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Fri Jul 14 11:55:20 2017 +0300

    Removed duplicate definitions

commit 1415b53014
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Fri Jul 14 11:51:29 2017 +0300

    Enable evaluation of constant functions with 3 arguments

commit ab367deef9
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Fri Jul 14 11:45:13 2017 +0300

    Removed deprecated check

commit c51659ea8c
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Fri Jul 14 11:40:42 2017 +0300

    Reduce limit

commit b1be5a04d7
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Fri Jul 14 11:38:23 2017 +0300

    Disable constant array_flip() evaluation

commit 7a5b0596a1
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Fri Jul 14 11:33:20 2017 +0300

    Fixed comments

commit 377e48b342
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Fri Jul 14 11:28:50 2017 +0300

    Cast of string to long/double can not produce exception

commit 228dd01af3
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Fri Jul 14 11:24:50 2017 +0300

    Added missed return

commit 0972a21636
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Fri Jul 14 11:22:36 2017 +0300

    objects may be nested in array operands

commit bd346bfa5c
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Fri Jul 14 11:19:20 2017 +0300

    ~$resource is unsupported.

commit c77e45610c
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Fri Jul 14 11:15:39 2017 +0300

    ws

commit 0b64d71109
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Fri Jul 14 11:14:40 2017 +0300

    Call to zend_ssa_unlink_use_chain() shouldn't be dropped

commit cb7059fcf6
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Fri Jul 14 11:11:58 2017 +0300

    Safer check for function name. The previous check is incorrect in ZTS build.

commit 7280aba1e1
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Fri Jul 14 11:02:10 2017 +0300

    Missing warning

commit 54bc7b576c
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Fri Jul 14 10:56:42 2017 +0300

    Proper check for successors count

commit ea8c004a15
Merge: 624f76d a32a3fb
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Thu Jul 13 15:56:26 2017 +0300

    Merge branch 'sccp' into dce

    * sccp:
      fix fold
      Fixed bug #74866 extension_dir = "./ext" now use current directory for base
      add next vc15 toolset to the list
      Revert "Enable whole program optimization for builds without PGO, too"
      extend comment
      cleanup discontinued target

commit a32a3fb67c
Merge: 2722dbf 5fb2abd
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Thu Jul 13 15:56:14 2017 +0300

    Merge branch 'master' into sccp

    * master:
      fix fold
      Fixed bug #74866 extension_dir = "./ext" now use current directory for base
      add next vc15 toolset to the list
      Revert "Enable whole program optimization for builds without PGO, too"
      extend comment
      cleanup discontinued target

commit 624f76df48
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Thu Jul 13 12:30:27 2017 +0300

    Set RETURN_VALUE_UNUSED instead of additional FREE opcode, if possible.
    Keep alive dead instructions that have to free two temporary variables.

commit 94c9b26695
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Thu Jul 13 11:51:14 2017 +0300

    More accurate "vararg" handling in DCE

commit 665ed8491c
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Thu Jul 13 09:31:45 2017 +0300

    Improved DCE performance, by avoiding redundand checks and repeatable iterations.

commit 3f42ce18ba
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Jul 12 23:03:11 2017 +0300

    Added few more instructions without side effects and exceptions

commit b17178f991
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Jul 12 20:39:02 2017 +0300

    Temprary enable SSA validation in DEBUG build

commit e238a8dc79
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Jul 12 20:37:53 2017 +0300

    Inegrate SSA validation developed by Nikita

commit a247cee80b
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Jul 12 20:31:27 2017 +0300

    Perform DCE pass before other DFA optimisations, to properly reconstruct "no value" use-def chains.

commit a651564f29
Merge: 06f6eb0 2722dbf
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Jul 12 18:55:05 2017 +0300

    Merge branch 'sccp' into dce

    * sccp:
      Resources should be closed during object destructioin, not during freeing.
      Guard against AppVeyor losing deps issue
      increase poll timeout as false positives mitigation
      Value of EG(user_exception_handler) should't relive request boundary
      sodium ext: remove function names before exception messages
      sodium ext: update the crypto_kx_*() API to the libsodium one
      Revert "fix macro redifinitions"

commit 2722dbfdf5
Merge: 6595ea3 09d3b73
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Jul 12 18:54:48 2017 +0300

    Merge branch 'master' into sccp

    * master:
      Resources should be closed during object destructioin, not during freeing.
      Guard against AppVeyor losing deps issue
      increase poll timeout as false positives mitigation
      Value of EG(user_exception_handler) should't relive request boundary
      sodium ext: remove function names before exception messages
      sodium ext: update the crypto_kx_*() API to the libsodium one
      Revert "fix macro redifinitions"

commit 06f6eb0e68
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Jul 12 14:52:28 2017 +0300

    Use zend_ssa_is_no_val_use() instead of zend_has_improper_op1_use()

commit 4b64dbb30d
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Jul 12 13:07:14 2017 +0300

    Check if instruction may throw exception only for instructions without known side effects.
    Always disable removing ASSIGN and UNSET_VAR that may throw.

commit c5aa1f47cd
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Jul 12 11:21:07 2017 +0300

    Use existing bit

commit c2af153bae
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Jul 12 11:10:48 2017 +0300

    Updated Windows build

commit de5e8fc129
Merge: 8c0de53 6595ea3
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Jul 12 11:10:12 2017 +0300

    Merge branch 'sccp' into dce

    * sccp: (29 commits)
      Use existing bit
      Updated Windows build
      Fixed compilation error
      Remove debug code
      We need to check for the length here too, or we crash and no one likes that! :(
      * Implemented #65187 (exif_read_data/thumbnail: add support for stream resource) * ext/exif now uses FAST_ZPP
      Remove extraneous configure flag
      Revert "remove excessive checks and fix warnings"
      parametrize zip names
      Upgrade bundled PCRE to 8.41
      Updated NEWS file with LDAP changes
      Fixed removing all controls by passing an empty array to ldap_set_option
      Filled in NEWS file with ext/ldap last modifications
      change order, allow to build as shared extension
      restore file deleted by mistake in a merge commit
      Fix segfault in php_stream_context_get_option call
      remove excessive checks and fix warnings
      fix macro redifinitions
      fix symbol availability and ws
      Remove this for now, as not found
      ...

commit 6595ea3420
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Jul 12 10:27:02 2017 +0300

    Use existing bit

commit f0bfd36cb8
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Jul 12 10:21:22 2017 +0300

    Updated Windows build

commit a9bd7c89f2
Merge: d1eb5ed 2b7d3fb
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Jul 12 09:51:32 2017 +0300

    Merge branch 'master' into sccp

    * master: (27 commits)
      Fixed compilation error
      Remove debug code
      We need to check for the length here too, or we crash and no one likes that! :(
      * Implemented #65187 (exif_read_data/thumbnail: add support for stream resource) * ext/exif now uses FAST_ZPP
      Remove extraneous configure flag
      Revert "remove excessive checks and fix warnings"
      parametrize zip names
      Upgrade bundled PCRE to 8.41
      Updated NEWS file with LDAP changes
      Fixed removing all controls by passing an empty array to ldap_set_option
      Filled in NEWS file with ext/ldap last modifications
      change order, allow to build as shared extension
      restore file deleted by mistake in a merge commit
      Fix segfault in php_stream_context_get_option call
      remove excessive checks and fix warnings
      fix macro redifinitions
      fix symbol availability and ws
      Remove this for now, as not found
      fix authors
      NEWS for Sodium
      ...

commit 8c0de53e5f
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Tue Jul 11 21:54:36 2017 +0300

    Initial integration of Dead Code Elimination (DCE) and unused variable removing passes, originally developed in https://github.com/nikic/php-src/tree/opt, into DFA optimization pass.

commit d1eb5ede3a
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Tue Jul 11 12:19:11 2017 +0300

    Proper SSA reconstruction for "$a = $a;"

commit 4872d139b5
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Tue Jul 11 11:57:33 2017 +0300

    Replace conditions, that should be always true, by ZEND_ASSERT()

commit 9915b1f5cd
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Tue Jul 11 11:56:51 2017 +0300

    Fixed pass name

commit d26ff1b88d
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Tue Jul 11 11:55:47 2017 +0300

    Don't create identical predecessors

commit 0625fbe32b
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Tue Jul 11 09:36:07 2017 +0300

    Update unreachable blocks.

commit 9d7d409e6a
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Tue Jul 11 09:28:49 2017 +0300

    Keep consistent cfg.map[]

commit 85a86e58b2
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Tue Jul 11 02:36:14 2017 +0300

    Remove unusded phi

commit d5e0f2df4c
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Tue Jul 11 02:35:00 2017 +0300

    Don't clear phi->spources[] too early.

commit a90ed34295
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Mon Jul 10 21:29:39 2017 +0300

    Make SCCP to remove dead live ranges.

commit 320237f3d8
Merge: 63bbed5 7be2637
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Mon Jul 10 17:35:21 2017 +0300

    Merge branch 'master' into sccp

    * master:
      Fixed memory leak introduced by 7cb5bdf64a
      eliminate casts
      remove checks for eol dependencies
      improve test
      Small fix in ext/ldap, Moved vars definitions to the beginning of the block using them
      ZipArchive implements countable, added ZipArchive::count() method

commit 63bbed5e71
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Mon Jul 10 17:01:15 2017 +0300

    Evaluation of few more constant functions

commit 07f45d8a3d
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Mon Jul 10 16:22:47 2017 +0300

    Properly unlinking dead blocks from predecessors/successors and dominators

commit 502002aa6e
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Mon Jul 10 13:33:14 2017 +0300

    Replacel constant JMPZ/NZ/ZNZ by JMP or NOP

commit 3253e61b66
Merge: e7f69f0 161c378
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Mon Jul 10 12:22:39 2017 +0300

    Merge branch 'master' into sccp

    * master:
      Revert "Fixed bug #74878"
      Upgrading note for #74837
      Fixed bug #74837 - NEWS
      Implement Countable for DomNodeList and DOMNamedNodeMap (Request #74837)
      Fix #49649 - Handle property visibility changes on unserialization

commit e7f69f07fc
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Mon Jul 10 12:15:08 2017 +0300

    Prevent compile-time evaluation of implode() with arguments causing run-time warnings

commit 0e882f189a
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Mon Jul 10 11:54:04 2017 +0300

    Constant evaluation of ini_get() for some safe cases

commit 9e36a748b2
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Mon Jul 10 11:13:37 2017 +0300

    Constant evaluation of implode()

commit e73046e266
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Mon Jul 10 10:51:23 2017 +0300

    Fixed uninitialized value

commit f5e2e8e68c
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Mon Jul 10 10:05:37 2017 +0300

    Remove (compact) unused constants after SCCP pass

commit f0b7bb86eb
Merge: e69d4f6 cfacf84
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Mon Jul 10 09:10:00 2017 +0300

    Merge branch 'master' into sccp

    * master: (37 commits)
      #73594 tests only check the extra params if dns_get_record is successful
      Fixed bug #74852 (property_exists returns true on unknown DateInterval property)
      fix uninitialized var
      fix comparison warning
      comply with POSIX signature
      fix warning
      remove some casts
      cleanup casts
      remove useless cast
      eliminate casts
      sync vim mode lines in main
      [ci skip] update NEWS
      [ci skip] update NEWS
      [ci skip] update NEWS
      Fixed bug #74883 SQLite3::__construct() produces "out of memory" exception with invalid flags
      Silent compiler warning
      Fix test
      Deprecated the read_exif_data() alias
      Add myself as exif maintainer
      update libs versions
      ...

commit e69d4f6140
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Fri Jul 7 12:51:41 2017 +0300

    Avoid in-place modification of referenced data

commit 58f7c17978
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Fri Jul 7 12:33:24 2017 +0300

    Use arena for temporary data.

commit 93d3e7ddc2
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Fri Jul 7 11:54:47 2017 +0300

    Made sccp_ctx to be an "extension" of scdf_ctx and remove duplicate data.

commit f810c6f7c4
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Fri Jul 7 11:20:48 2017 +0300

    Improved SSCP integration

commit d17ed887f3
Merge: d90805a 29653da
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Fri Jul 7 10:22:37 2017 +0300

    Merge branch 'master' into sccp

    * master:
      Fixed bug #74873 (Minor BC break: PCRE_JIT changes output of preg_match()).
      Fixed bug #72324 (imap_mailboxmsginfo() return wrong size)
      Fix redefine warnings
      Expand sb's name and capitalize my own
      Write the URL on a new line, so that it is easier copyable

commit d90805a40b
Merge: 2e5e03b fc336c7
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Thu Jul 6 23:07:04 2017 +0300

    Merge branch 'master' into sccp

    * master:
      Added missed dump of "main" script code
      replace the stack var by a macro
      [ci skip] sync NEWS
      minor fix for web announce
      add missing NEWS entry for #74087 and also fix the formatting
      move NEWS entry to the correct place, also bump the version

commit 2e5e03b673
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Thu Jul 6 23:03:41 2017 +0300

    Call info should be removed, but at least we should prevent incorrect stack adjustment.

commit 1ee9110b35
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Thu Jul 6 19:34:43 2017 +0300

    Remove NOP instructions, introduced bvy SCCP.
    This commit discloses unrelated issue caused ext/soap/tests/bug70211.phpt failure.

commit 9a2f50070d
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Thu Jul 6 16:34:02 2017 +0300

    Avoid useless iterations for first SSA variablesi, always marked BOT.

commit c57dd7c6ef
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Thu Jul 6 16:33:46 2017 +0300

    Use reference-counting

commit 90f822d68e
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Thu Jul 6 14:00:22 2017 +0300

    Support for few more opcodes

commit cffee2f7e5
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Thu Jul 6 12:35:13 2017 +0300

    Combined constants substitutaion and dead instruction removing in single pass. This eleminates substitution in dead instructions.

commit f890375c16
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Thu Jul 6 10:34:48 2017 +0300

    Use reference-counting instead of duplication

commit db0cd64dfa
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Thu Jul 6 03:04:27 2017 +0300

    Improved SCDF<->SCCP interface

     - "get_feasible_successors" callback is changed into "mark_feasible_successors" and should mark necessary edges through scdf_mark_edge_feasible()
     - SCDF takes care about OP_DATA instruction
     - SCDF code is re-arranged to avoid repeatable checks

commit e0ad5dd489
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Thu Jul 6 00:55:40 2017 +0300

    Changed representation of "feasible_edges", using one bit per edge.

commit afee3138fe
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Thu Jul 6 00:49:56 2017 +0300

    Revert "Don't propagate unused values"

    This reverts commit 84e5bfd430.

commit 84e5bfd430
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Jul 5 23:39:42 2017 +0300

    Don't propagate unused values

commit d4f15b9506
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Jul 5 23:39:10 2017 +0300

    Don't visit the same Phi twice

commit 2558311b4d
Merge: 722a59d 7bb4ae5
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Jul 5 21:51:06 2017 +0300

    Merge branch 'master' into sccp

    * master:
      Fixed final dump "after optimizer"

commit 722a59ddb1
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Jul 5 21:09:29 2017 +0300

    SCCP doesn't support VERIFY_RETURN_TYPE (ext/opcache/tests/bug73789.phpt failure)

commit 7084fade4d
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Jul 5 20:37:21 2017 +0300

    Fixed SSA reconstruction

commit 37ec4e0845
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Jul 5 19:34:46 2017 +0300

    Disable constant propagation for variables that can be modified indirectly

commit 4bb9b6526e
Merge: 6800460 73d5097
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Jul 5 19:17:04 2017 +0300

    Merge branch 'master' into sccp

    * master: (43 commits)
      Keep information about SSA variables, that may be modified indirectly.
      Added constants for known ldap controls OID and tests for ldap_get/set_option for controls
      Added support for controls to ldap_get_option
      [ci skip] sync NEWS
      NEWS for oniguruma
      Patch from the upstream git https://github.com/kkos/oniguruma/issues/60 (CVE-2017-9228)
      Patch from the upstream git https://github.com/kkos/oniguruma/issues/59 (CVE-2017-9229) b690371bbf97794b4a1d3f295d4fb9a8b05d402d Modified for onig 5.9.6
      Patch from the upstream git https://github.com/kkos/oniguruma/issues/58 (CVE-2017-9227)
      Patch from the upstream git https://github.com/kkos/oniguruma/issues/57 (CVE-2017-9224)
      Patch from the upstream git https://github.com/kkos/oniguruma/issues/55 (CVE-2017-9226) b4bf968ad52afe14e60a2dc8a95d3555c543353a Modified for onig 5.9.6 f015fbdd95f76438cd86366467bb2b39870dd7c6 Modified for onig 5.9.6
      valid_symbol_table removed
      Improve fix for #74145
      Fix wddx
      Fix tests
      Fixed bug #74111
      Fix bug #74603 - use correct buffer size
      Fix bug #74651 - check EVP_SealInit as it can return -1
      Update NEWS
      Fix bug #74087
      Fixed parsing of strange formats with mixed month/day and time strings
      ...

commit 680046086c
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Jul 5 16:14:38 2017 +0300

    Support for few more internal functions evaluation

commit 74a29468ef
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Jul 5 13:42:55 2017 +0300

    Disabled evaluation of strpos() with empty needle.

commit e8908946e5
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Jul 5 13:17:30 2017 +0300

    Replace calls to in_array() with constant array by IN_ARRAY instruction after SCCP.

commit 4e8fa2c3dd
Author: Dmitry Stogov <dmitry@zend.com>
Date:   Wed Jul 5 00:58:12 2017 +0300

    Initial integration of Sparse Conditional Constant Propagation (SCCP), originally developed in https://github.com/nikic/php-src/tree/opt, into DFA optimization pass.
2017-07-14 14:33:34 +03:00

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?? ??? ????, PHP 7.2.0beta1
- Core:
. Fixed bug #74603 (PHP INI Parsing Stack Buffer Overflow Vulnerability).
(Stas)
. Fixed bug #74111 (Heap buffer overread (READ: 1) finish_nested_data from
unserialize). (Nikita)
. Fixed bug #74819 (wddx_deserialize() heap out-of-bound read via
php_parse_date()). (Derick)
. Fixed bug #49649 (unserialize() doesn't handle changes in property
visibility). (pmmaga)
. Fixed #74866 (extension_dir = "./ext" now use current directory for base).
(Francois Laupretre)
- Date:
. Fixed bug #74852 (property_exists returns true on unknown DateInterval
property). (jhdxr)
- DOM:
. Implement #74837 (Implement Countable for DomNodeList and DOMNamedNodeMap).
(Andreas Treichel)
- EXIF:
. Implemented #65187 (exif_read_data/thumbnail: add support for stream
resource). (Kalle)
. Deprecated the read_exif_data() alias. (Kalle)
. Fixed bug #74428 (exif_read_data(): "Illegal IFD size" warning occurs with
correct exif format). (bradpiccho at gmail dot com, Kalle)
. Fixed bug #72819 (EXIF thumbnails not read anymore). (Kalle)
. Fixed bug #62523 (php crashes with segfault when exif_read_data called).
(Kalle)
. Fixed bug #50660 (exif_read_data(): Illegal IFD offset (works fine with
other exif readers). (skinny dot bravo at gmail dot com, Kalle)
- GD:
. Fixed bug #74435 (Buffer over-read into uninitialized memory). (cmb)
- IMAP:
. Fixed bug #72324 (imap_mailboxmsginfo() return wrong size).
(ronaldpoon at udomain dot com dot hk, Kalle)
- LDAP:
. Fixed passing an empty array to ldap_set_option for client or server controls.
- Opcache:
. Added goblal optimisation passes based on data flow analyses using SSA form:
SCCP - Sparse Conditional Constant Propagation, DCE - Dead Code Elimination
and removing of unused local variables (Nikita, Dmitry)
- OpenSSL:
. Fixed bug #74651 (negative-size-param (-1) in memcpy in zif_openssl_seal()).
(Stas)
- PCRE:
. Fixed bug #74873 (Minor BC break: PCRE_JIT changes output of preg_match()).
(Dmitry)
- Sodium:
. New cryptographic extension
- SQLite3:
. Fixed bug #74883 (SQLite3::__construct() produces "out of memory" exception
with invalid flags). (Anatol)
- ZIP:
. ZipArchive implements countable, added ZipArchive::count() method. (Remi)
. Fix segfault in php_stream_context_get_option call. (Remi)
06 Jul 2017, PHP 7.2.0alpha3
- Core:
. Fixed bug #74780 (parse_url() broken when query string contains colon).
(jhdxr)
. Fixed bug #74761 (Unary operator expected error on some systems). (petk)
. Allow loading PHP/Zend extensions by name in ini files (extension=<name>).
(francois at tekwire dot net)
. Added object type annotation. (brzuchal)
. Fixed bug #74815 (crash with a combination of INI entries at startup).
(Anatol)
. Fixed bug #74836 (isset on zero-prefixed numeric indexes in array broken).
(Dmitry)
. Fixed bug #74101, bug #74614 (Unserialize Heap Use-After-Free (READ: 1) in
zval_get_type). (Nikita)
- CLI:
. Fixed bug #74849 (Process is started as interactive shell in PhpStorm).
(Anatol)
- LDAP:
. Implemented FR #69445 (Support for LDAP EXOP operations)
. Fixed support for LDAP_OPT_SERVER_CONTROLS and LDAP_OPT_CLIENT_CONTROLS in ldap_get_option
- OpenSSL:
. Fixed bug #74798 (pkcs7_en/decrypt does not work if \x0a is used in content).
(Anatol)
- SPL:
. Fixed bug #73471 (PHP freezes with AppendIterator). (jhdxr)
. Fixed bug #71412 (Incorrect arginfo for ArrayIterator::__construct).
(tysonandre775 at hotmail dot com)
- Session:
. Fixed bug #74514 (5 session functions incorrectly warn when calling in
read-only/getter mode). (Yasuo)
- Standard:
. Add support for extension name as argument to dl().
(francois at tekwire dot net)
- zlib:
. Fixed bug #73944 (dictionary option of inflate_init() does not work).
(wapmorgan)
. Expose inflate_get_status() and inflate_get_read_len() functions.
(Matthew Trescott)
22 Jun 2017, PHP 7.2.0alpha2
- Core:
. Change PHP_OS_FAMILY value from "OSX" to "Darwin". (Sebastian, Kalle)
- GD:
. Fixed bug #74744 (gd.h: stdarg.h include missing for va_list use in
gdErrorMethod). (rainer dot jung at kippdata dot de, cmb)
- OCI8:
. Add TAF callback (PR #2459). (KoenigsKind)
. Fixed bug #74625 (Integer overflow in oci_bind_array_by_name). (Ingmar Runge)
- OpenSSL:
. Fixed bug #74720 (pkcs7_en/decrypt does not work if \x1a is used in
content). (Anatol)
. Use TLS_ANY for default ssl:// and tls:// negotiation. (kelunik)
. Fix leak in openssl_spki_new(). (jelle at vdwaa dot nl)
. Added openssl_pkcs7_read() and pk7 parameter to openssl_pkcs7_verify().
(jelle at vdwaa dot nl)
- PDO_OCI:
. Fixed Bug #74537 (Align --with-pdo-oci configure option with --with-oci8 syntax).
(Tianfang Yang)
- Standard:
. Compatibility with libargon2 versions 20161029 and 20160821.
(charlesportwoodii at erianna dot com)
. Fixed Bug #74737 (mysqli_get_client_info reflection info).
(mhagstrand at gmail dot com)
- Streams:
. Default ssl/single_dh_use and ssl/honor_cipher_order to true. (kelunik)
- SQLite3:
. Update to Sqlite 3.19.3. (cmb)
. Implement writing to blobs. (bohwaz at github dot com)
08 Jun 2017, PHP 7.2.0alpha1
- Core:
. Added ZEND_COUNT, ZEND_GET_CLASS, ZEND_GET_CALLED_CLASS, ZEND_GET_TYPE,
ZEND_FUNC_NUM_ARGS, ZEND_FUNC_GET_ARGS instructions, to implement
corresponding builtin functions. (Dmitry)
. "Countable" interface is moved from SPL to Core. (Dmitry)
. Added ZEND_IN_ARRAY instruction, implementing optimized in_array() builtin
function, through hash lookup in flipped array. (Dmitry)
. Removed IS_TYPE_IMMUTABLE (it's the same as COPYABLE & !REFCOUNTED). (Dmitry)
. Removed the sql.safe_mode directive. (Kalle)
. Removed support for Netware. (Kalle)
. Renamed ReflectionClass::isIterateable() to ReflectionClass::isIterable()
(alias original name for BC). (Sara)
. Fixed bug #54535 (WSA cleanup executes before MSHUTDOWN). (Kalle)
. Implemented FR #69791 (Disallow mail header injections by extra headers)
(Yasuo)
. Implemented FR #49806 (proc_nice() for Windows). (Kalle)
. Fix pthreads detection when cross-compiling (ffontaine)
. Fixed memory leaks caused by exceptions thrown from destructors. (Bob,
Dmitry).
. Fixed bug #73215 (uniqid() should use better random source). (Yasuo)
. Fixed bug #73337 (try/catch not working with two exceptions inside a same
operation). (Dmitry)
. Implemented FR #72768 (Add ENABLE_VIRTUAL_TERMINAL_PROCESSING flag for
php.exe). (Michele Locati)
. Implemented "Convert numeric keys in object/array casts" RFC, fixes
bugs #53838, #61655, #66173, #70925, #72254, etc. (Andrea)
. Implemented "Deprecate and Remove Bareword (Unquoted) Strings" RFC.
(Rowan Collins)
. Raised minimum supported Windows versions to Windows 7/Server 2008 R2.
(Anatol)
. Implemented minor optimization in array_keys/array_values(). (Sara)
. Fixed bug #73969 (segfault in debug_print_backtrace). (andrewnester)
. Added PHP_OS_FAMILY constant to determine on which OS we are. (Jan Altensen)
. Fixed bug #73994 (arginfo incorrect for unpack). (krakjoe)
. Fixed bug #73973 (assertion error in debug_zval_dump). (andrewnester)
. Fixed bug #73987 (Method compatibility check looks to original
definition and not parent). (pmmaga)
. Fixed bug #73991 (JSON_OBJECT_AS_ARRAY not respected). (Sara)
. Fixed bug #74053 (Corrupted class entries on shutdown when a destructor
spawns another object). (jim at commercebyte dot com)
. Fixed bug #73971 (Filename got limited to MAX_PATH on Win32 when scan
directory). (Anatol)
. Fixed bug #74149 (static embed SAPI linkage error). (krakjoe)
. Fixed bug #72359, bug #72451, bug #73706, bug #71115 and others related
to interned strings handling in TS builds. (Anatol, Dmitry)
. Implemented "Trailing Commas In List Syntax" RFC for group use lists only.
(Sammy Kaye Powers)
. Fixed bug #74269 (It's possible to override trait property with different
loosely-equal value). (pmmaga)
. Fixed bug #61970 (Restraining __construct() access level in subclass gives
a fatal error). (pmmaga)
. Fixed bug #63384 (Cannot override an abstract method with an abstract
method). (pmmaga, wes)
. Fixed bug #74607 (Traits enforce different inheritance rules). (pmmaga)
. Fixed misparsing of abstract unix domain socket names. (Sara)
- BCMath:
. Fixed bug #46564 (bcmod truncates fractionals). (liborm85)
- Calendar:
. Fix integer overflows (Joshua Rogers)
- Date:
. Fixed bug #55407 (Impossible to prototype DateTime::createFromFormat).
(kelunik)
. Fixed bug #69587 (DateInterval properties and isset). (jhdxr)
. Fixed bug #74404 (Wrong reflection on DateTimeZone::getTransitions).
(krakjoe)
. Fixed bug #74080 (add constant for RFC7231 format datetime). (duncan3dc)
. Fixed bug #74639 (implement clone for DatePeriod and DateInterval).
(andrewnester)
. Implemented FR #71520 (Adding the DateTime constants to the
DateTimeInterface interface). (Majkl578)
- Dba:
. Fixed bug #72885 (flatfile: dba_fetch() fails to read replaced entry).
(Anatol)
- DOM:
. Fixed bug #67474 (getElementsByTagNameNS filter on default ns). (aboks)
. Fixed bug #54382 (getAttributeNodeNS doesn't get xmlns* attributes).
(aboks)
. Fixed bug #74004 (LIBXML_NOWARNING (etc) ignored by DOMDocument::loadHTML).
(somedaysummer)
- EXIF:
. Added support for vendor specific tags for the following formats:
Samsung, DJI, Panasonic, Sony, Pentax, Minolta, Sigma/Foveon, AGFA,
Kyocera, Ricoh & Epson. (Kalle)
. Fixed bug #72682 (exif_read_data() fails to read all data for some
images). (Kalle)
. Fixed bug #71534 (Type confusion in exif_read_data() leading to heap
overflow in debug mode). (hlt99 at blinkenshell dot org, Kalle)
. Fixed bug #68547 (Exif Header component value check error).
(sjh21a at gmail dot com, Kalle)
. Fixed bug #66443 (Corrupt EXIF header: maximum directory nesting level
reached for some cameras). (Kalle)
. Fixed Redhat bug #1362571 (PHP not returning full results for
exif_read_data function). (Kalle)
- FPM:
. Configuration to limit fpm slow log trace callers. (Sannis)
. Fixed bug #69865 (php-fpm does not close stderr when using syslog).
(Mike)
- FTP:
. Fixed bug #74598 (ftp:// wrapper ignores context arg). (Sara)
. Implement MLSD for structured listing of directories. (blar)
- GD:
. Implemented imageresolution as getter and setter (Christoph)
. Fixed bug #74343 (compile fails on solaris 11 with system gd2 library).
(krakjoe)
- GMP:
. Fixed bug #70896 (gmp_fact() silently ignores non-integer input). (Sara)
- hash:
. Fixed bug #73961 (environmental build dependency in hash sha3 source).
(krakjoe)
. Changed HashContext from resource to object. (Rouven Weßling, Sara)
. Disallowed usage of non-cryptographic hash functions with HMAC and PBKDF2.
(Andrey Andreev, Nikita)
- intl:
. Fixed bug #74433 (wrong reflection for Normalizer methods). (villfa)
. Fixed bug #74439 (wrong reflection for Locale methods). (villfa)
. Fixed bug #74468 (wrong reflection on Collator::sortWithSortKeys). (villfa)
. Fixed bug #63790 (test using Spoofchecker which may be unavailable). (Sara)
- Mbstring:
. Implemented request #66024 (mb_chr() and mb_ord()). (Masakielastic, Yasuo)
. Implemented request #65081 (mb_scrub()). (Masakielastic, Yasuo)
. Implemented request #69086 (enhancement for mb_convert_encoding() that
handles multibyte replacement char nicely). (Masakielastic, Yasuo)
. Added array input support to mb_convert_encoding(). (Yasuo)
. Added array input support to mb_check_encoding(). (Yasuo)
. Fixed bug #69079 (enhancement for mb_substitute_character). (masakielastic)
. Update to oniguruma version 6.3.0. (Remi)
- Mcrypt:
. The deprecated mcrypt extension has been moved to PECL. (leigh)
- MySQLi:
. Fixed bug #73949 (leak in mysqli_fetch_object). (krakjoe)
- mysqlnd:
. Fixed bug #73800 (sporadic segfault with MYSQLI_OPT_INT_AND_FLOAT_NATIVE).
(vanviegen)
- OpenSSL:
. Fixed bug #71519 (add serial hex to return value array). (xrobau)
- PCRE:
. Added support for PCRE JIT fast path API. (dmitry)
. Fixed bug #61780 (Inconsistent PCRE captures in match results). (cmb)
- PDO:
. Add "Sent SQL" to debug dump for emulated prepares. (Adam Baratz)
. Add parameter types for national character set strings. (Adam Baratz)
- PDO_DBlib:
. Fixed bug #73234 (Emulated statements let value dictate parameter type).
(Adam Baratz)
. Fixed bug #73396 (bigint columns are returned as strings). (Adam Baratz)
. Expose DB-Library version as \PDO::DBLIB_ATTR_VERSION attribute on \PDO
instance. (Adam Baratz)
. Add test coverage for bug #72969. (Jeff Farr)
- PDO_OCI:
. Fixed bug #54379 (PDO_OCI: UTF-8 output gets truncated). (gureedo / Oracle)
- PDO_PgSQL:
. Fixed bug #73959 (lastInsertId fails to throw an exception for wrong
sequence name). (andrewnester)
- PDO_Sqlite
. Switch to sqlite3_prepare_v2() and sqlite3_close_v2() functions (rasmus)
- phar:
. Fixed bug #74383 (phar method parameters reflection correction).
(mhagstrand)
. Fixed bug #74196 (phar does not correctly handle names containing dots).
(mhagstrand)
. Fixed bug #74386 (Phar::__construct reflection incorrect). (villfa)
- PHPDBG
. Added extended_value to opcode dump output. (Sara)
- posix:
. Fixed bug #71219 (configure script incorrectly checks for ttyname_r). (atoh)
- Session:
. Fixed bug #73461 (Prohibit session save handler recursion). (Yasuo)
. PR #2233 Removed register_globals related code and "!" can be used as $_SESSION key name. (Yasuo)
. Improved bug #73100 fix. 'user' save handler can only be set by session_set_save_handler()
. Fixed bug #69582 (session not readable by root in CLI). (EvgeniySpinov)
- SOAP:
. Fixed bug #69137 (Peer verification fails when using a proxy with SoapClient)
(Keith Smiley)
- SQLite3:
. Update to Sqlite 3.18.0. (cmb)
. Fixed bug #74413 (incorrect reflection for SQLite3::enableExceptions).
(krakjoe)
- Standard:
. Add subject to mail log. (tomsommer)
. Fixed bug #31875 (get_defined_functions additional param to exclude
disabled functions). (willianveiga)
. Fixed bug #69442 (closing of fd incorrect when PTS enabled). (jaytaph)
. Fixed bug #72974 (imap is undefined service on AIX). (matthieu.sarter)
. Fixed bug #72979 (money_format stores wrong length AIX). (matthieu.sarter)
. Fixed bug #74300 (unserialize accepts two plus/minus signs for float number exponent part).
(xKerman)
. Fixed bug #74556 (stream_socket_get_name() returns '\0'). (Sara)
- XML:
. Moved utf8_encode() and utf8_decode() to the Standard extension. (Andrea)
. Fixed bug #72135 (malformed XML causes fault) (edgarsandi)
- xmlreader:
. Fixed bug #74457 (Wrong reflection on XMLReader::expand). (villfa)
- XMLRPC:
. Use Zend MM for allocation in bundled libxmlrpc (Joe)
- ZIP:
. Add support for encrypted archives. (Remi)
. Use of bundled libzip is deprecated, --with-libzip option is recommended. (Remi)
. Fixed Bug #73803 (Reflection of ZipArchive does not show public properties). (Remi)
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