As of MariaDB 10.0.2, the server reports a fake version number as work-
around for replication issues[1]. We apply the same "fix" as in the
MariaDB client to cater to this.
[1] <c50ee6c23d (diff-5b45fa673c88c06a9651c7906364f592)>
The php_stream_read() and php_stream_write() functions now return
an ssize_t value, with negative results indicating failure. Functions
like fread() and fwrite() will return false in that case.
As a special case, EWOULDBLOCK and EAGAIN on non-blocking streams
should not be regarded as error conditions, and be reported as
successful zero-length reads/writes instead. The handling of EINTR
remains unclear and is internally inconsistent (e.g. some code-paths
will automatically retry on EINTR, while some won't).
I'm landing this now to make sure the stream wrapper ops API changes
make it into 7.4 -- however, if the user-facing changes turn out to
be problematic we have the option of clamping negative returns to
zero in php_stream_read() and php_stream_write() to restore the
old behavior in a relatively non-intrusive manner.
Since mysqlnd is solely developed in the php-src repository, it makes
not much sense to have its own version number, particularly since
nobody cares to update it. Therefore we use PHP's version number, but
stick with the "mysqlnd" prefix which can be important to distinguish
the mysqli driver (libmysqlclient vs. mysqlnd).
Available under -DZEND_TRACK_ARENA_ALLOC. This will use the system
allocator combined with arena checkpointing & release semantics
and allows analyzing arena usage under asan/valgrind.
I've sacrificed the duplicate arena implementation in mysqlnd, as
the integration with mysqlnd alloc is not worth the code duplication
to me.
The actual leak is observed in ext/pdo_mysql/tests/bug_74376.phpt.
The persistent connection leaks because a refcount decrement on a
result is missed. The refcount decrement is missed because
free_result_contents is used, rather than free_result.
Looking at other uses of free_result_contents, it looks like they
could also suffer from this problem. Apart from one case,
free_result_contents is always used to release the result entirely
(I've adjusted the one differing case to only free meta), so I'm
moving most of the logic from free_result into free_result_contents.
The only difference is now that free_result will skip_result first.
Streams will be freed in an unpredictable order during shutdown.
Ignore explicit calls to php_stream_close() entirely to avoid
use-after-free -- instead let the stream resource destructor
deal with it. We have to account for a few special cases:
* Enclosed streams should be freed, as the resource destructor
will forward to the enclosing stream.
* Stream cookies also directly free streams, because we delegate
to the cookie destruction if one exists.
* Mysqlnd also directly frees streams, because it explicitly
removes stream resources (because mysqlnd!)
RFC: https://wiki.php.net/rfc/tostring_exceptions
And convert some object to string conversion related recoverable
fatal errors into Error exceptions.
Improve exception safety of internal code performing string
conversions.
Don't generate explicit warnings for these in two places, use usual
error handling mechanism. Additionally suppress a number of warnings
if the server has gone away.
Normalization include:
- Use dnl for everything that can be ommitted when configure is built in
favor of the shell comment character # which is visible in the output.
- Line length normalized to 80 columns
- Dots for most of the one line sentences
- Macro definitions include similar pattern header comments now
- AC_CHECK_SIZEOF is now called mostly only in PHP_CHECK_STDINT_TYPES()
macro except for some parts checking for the 32 or 64 bit architecture.
- SIZEOF_CHAR removed since it is always 1
- ZEND_BIN_ID is now of a more logical pattern `BIN_48888` on 64bit
architectures and `BIN_44444` on 32bit instead of literal string
`BIN_SIZEOF_CHAR48888` on 64bit and `BIN_SIZEOF_CHAR44444` on 32bit.
The unneeded SIZEOF_CHAR part has been removed.
- XMLRPC_TYPE_CHECKS removed
- The `long long int` is the same as `long long` and redundant checks
removed accordingly.
- Removed PHP_CHECK_64BIT macro. Checking if current platform is 64bit
or not can be also done simply by using a check of the long type on
place. This removes redundant m4 macro PHP_CHECK_64BIT.
The AC_CHECK_TYPE was refactored in more recent versions of Autoconf
and the call with two arguments is obsolete and not recommended anymore.
This patch also refactors some leftovers of using ulong and uint which
are not standard nor common usages of types in C.
The ulong can be used as zend_ulong and uint usage is actually
`unsigned int`.
The usage of HAVE_ULONG removed since it is not used in current code
base.
Legacy edgecase for some legacy HPUX systems removed:
- sys/stream.h header is not checked and the HAVE_SYS_STREAM_H is
not defined with current build system.
- flags are unsigned int
- max_allowed_packet changed to unsigned int
The sprintf function has been normalized to php_sprintf via
61364b5bb1.
This patch removes the checks to make a custom sprintf function
The ZEND_BROKEN_SPRINTF has been removed and the
hardcoded #define zend_sprintf sprintf is used.
The php_sprintf and zend_sprintf are now symbols to sprintf.
This patch now removes the custom PHP definitions of the php_sprintf and
zend_sprintf functions in favor of the C99 sprintf which is also
standardized in C89 already. Once, on some systems sprintf didn't behave
in same way.
The same variable was reused in two nested loops... The test doesn't
fail on 7.2, but I'm fixing this here anyway as the code is clearly
wrong, and probably erroneous in other situations.
