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Both aria and myisam storage engines feature a logic path in
thr_find_all_keys that leads to undefined behaviour by bypassing the
initialization code of variables after my_thread_init().
By refactoring the nested logic into a separate function, this problem
is resolved.
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backport of
commit bba3d42
Author: Sergei Golubchik <serg@mariadb.org>
Date: Sat Apr 30 10:27:42 2016 +0200
MDEV-9926 probes_mysql.h includes nonexisting files
install private generated files
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UNIQUE::~UNIQUE | SQL/UNIQUES.CC:355
Analysis
========
Enabling the sort_buffer_size with a large value
can cause operations utilizing the sort buffer
like DELETE as mentioned in the bug report to
fail. 5.5 and 5.6 versions reports OOM error
while in 5.7+, the server crashes.
While initializing the mem_root for the sort buffer
tree, the block size for the mem_root is determined
from the 'sort_buffer_size' value. This unsigned
long value is typecasted to unsigned int, hence
it becomes zero. Further block_size computation
while initializing the mem_root results in a very
large block_size value. Hence while trying to
allocate a block during the DELETE operation,
an OOM error is reported. In case of 5.7+, the PFS
instrumentation for memory allocation, overshoots
the unsigned value and allocates a block of just
one byte. While trying to free the block of the
mem_root, the original block_size is used. This
triggers the crash since the server tries to free
unallocated memory.
Fix:
====
In order to restrict usage of such unreasonable
sort_buffer_size, the typecast of block size
to 'unsigned int' is removed and hence reports
OOM error across all versions for sizes
exceeding unsigned int range.
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Fix test whether process is alive in mysqltest.
Also fix SHUT_RD definition on Windows to be SD_RECEIVE.
SD_BOTH was used instead prior to this patch, and this would
occasionally make mysql_shutdown() fail - when the socket for the current connection
is not able send the COM_SHUTDOWN response anymore.
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"#include <math.h>" has "#define isfinite(X) ..."
while "#include <cmath>" does "#undef isfinite"
in -std=c++11 mode <cmath> is included, we need a workaround
to provide a usable isfinite()
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1. ignore generated dtrace files
2. don't rewrite probes_mysql_nodtrace.h in-place
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1. check that unused inline functions are removed
2. only allow compilation if they are or if the check if overridden
3. with CMAKE_GENERATOR=Makefiles, use all flags when testing
(e.g. both CMAKE_C_FLAGS and CMAKE_C_FLAGS_DEBUG if
CMAKE_BUILD_TYPE=Debug). This is because
- on Solaris with the SunPro compiler, default CMAKE_C_FLAGS_xxx
values contain -xO2 (for Release and RelWithDebInfo)
and -g (for RelWithDebInfo and Debug)
- proper inlining only works at -xO4 without -g
- so if CMAKE_C_FLAGS has -xO4, inlining would work in
configure.cmake (before this fix) and fail during actual compilation
also remove the outdated check for inline from myu_global.h
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reverted about half of commits as either not applicable or
outright wrong
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Problem Statement
=========
Fix various issues when building MySQL with Visual Studio 2015.
Fix:
=======
- Visual Studio 2015 adds support for timespec. Add check and
related code to use this and only use our replacement if
timespec is not defined.
- Rename lfind/lsearch to my* to avoid redefinition problems.
- Set default value for TMPDIR to "" on Windows as P_tmpdir
no longer exists.
- using VS definition of snprintf if available
- tzname are now renamed to _tzname.
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Description: The newest RHEL/CentOS/SL 6.6 openssl package
(1.0.1e-30.el6_6.9; published around 6/4/2015) contains a fix for
LogJam. RedHat's fix for this was to limit the use
of any SSL DH key sizes to a minimum of 768 bits. This breaks any
DHE SSL ciphers for MySQL clients as soon as you install the
openssl update, since in vio/viosslfactories.c, the default
DHPARAM is a 512 bit one. This cannot be changed in
configuration/runtime; and needs a recompile. Because of this the
client connection with --ssl-cipher=DHE-RSA-AES256-SHA is not
able to connect the server.
Analysis: Openssl has changed Diffie-Hellman key from the 512 to
1024 due to some reasons(please see the details at
http://openssl.org/news/secadv_20150611.txt) Because of this the client
with DHE cipher is failing to connect the server. This change took
place from the openssl-1.0.1n onwards.
Fix: Similar bug fix is already pushed to mysql-5.7 under bug#18367167.
Hence we backported the same fix to mysql-5.5 and mysql-5.6.
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cherry-pick f1daf9ce from 10.0 branch
-------------------------------------
Fix build failures caused by new C runtime library
- isnan, snprintf, struct timespec are now defined, attempt to
redefine them leads
- P_tmpdir, tzname are no more defined
- lfind() and lsearch() in lf_hash.c had to be renamed, declaration
conflicts with some C runtime functions with the same name declared in
a header included by stdlib.h
Also fix couple of annoying warnings :
- remove #define NOMINMAX from config.h to avoid "redefined" compiler
warnings(NOMINMAX is already in compile flags)
- disable incremental linker in Debug as well (feature not used much
and compiler crashes often)
Also simplify package building with Wix, require Wix 3.9 or later
(VS2015 is not compatible with old Wix 3.5/3.6)
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if mysqld runs as service
The bug is caused by the attempt to write to filedescriptor 2
(STDERR_FILENO), however in case of a service stderr has different fd
(debugging shows fileno(stderr) is 4 after freopen, and -1 before it)
Fixed definition of STDERR_FILENO for Windows to be fileno(stderr).
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Field_newdate::val_str
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Conflicts:
configure.cmake
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The check for UCONTEXT in cmake was somehow become broken, disabling the
fallback to ucontext. This caused the non-blocking client API to not be
available for non-x86 platforms, on which no hand-crafted assembler
implementation of my_context is available.
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Fix test whether process is alive in mysqltest.
Also fix SHUT_RD definition on Windows to be SD_RECEIVE.
SD_BOTH was used instead prior to this patch, and this would
occasionally make mysql_shutdown() fail - when the socket for the current connection
is not able send the COM_SHUTDOWN response anymore.
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‘ERR_remove_state’ was not declared in this scope" when linking against OpenSSL 1.0.2e
ERR_remove_state is deprecated, use ERR_remove_thread_state
if possible
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of the plugins
Removed exit() from daemon_example, pass error to caller instead.
Also removed unused my_abort_hook.
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- Added some extra command to rpl_start_stop to ensure that the
IO thread has connected to the master before we shut down the server.
- if signal returns signalhandler_t, use this with the alarm code
- Added missing tests to sys_vars
- Fixed some possible overflow bugs in tabxml.cpp
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Fix build failures caused by new C runtime library
- isnan, snprintf, struct timespec are now defined, attempt to
redefine them leads
- P_tmpdir, tzname are no more defined
- lfind() and lsearch() in lf_hash.c had to be renamed, declaration
conflicts with some C runtime functions with the same name declared in
a header included by stdlib.h
Also fix couple of annoying warnings :
- remove #define NOMINMAX from config.h to avoid "redefined" compiler
warnings(NOMINMAX is already in compile flags)
- disable incremental linker in Debug as well (feature not used much
and compiler crashes often)
Also simplify package building with Wix, require Wix 3.9 or later
(VS2015 is not compatible with old Wix 3.5/3.6)
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Fixed unclean prototype declaration. According to ISO/IEC 9899:TC2:
...
10. The special case of an unnamed parameter of type void as the only item in
the list specifies that the function has no parameters.
...
14. An identifier list declares only the identifiers of the parameters of the
function. An empty list in a function declarator that is part of a
definition of that function specifies that the function has no parameters.
The empty list in a function declarator that is not part of a definition of
that function specifies that no information about the number or types of the
parameters is supplied. 124)
...
6.11.6 Function declarators
The use of function declarators with empty parentheses (not prototype-format
parameter type declarators) is an obsolescent feature.
...
Patch contributed by Michal Hrusecky.
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Expression in macro protected by ()
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of more than 45G with a key_cache_block_size of 1024 or less.
The problem was that some of the arguments to my_multi_malloc() got to be
more than 4G.
Fix:
- Inntroduced my_multi_malloc_large() that can handle big regions.
- Changed MyISAM and Aria key caches to use my_multi_malloc_large().
I didn't change the default my_multi_malloc() as this would be a too big
patch and we don't allocate 4G blocks anywhere else.
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in cmake tests let's treat clang like gcc (same options,
same builtins) in many cases.
* don't check the compiler when
* testing for -fvisibility=hidden support
* testing for HAVE_ABI_CXA_DEMANGLE
* testing for HAVE_GCC_ATOMIC_BUILTINS
* when removing options with string(replace)
* when running ${CC} --version (ignore the error instead)
* run ABI checks for clang
* use "canonical" gcc flags for clang
* fix groonga too
Also:
* add cmake detection for gcc __atomic_* builtins. they might be
supported (__ATOMIC_SEQ_CST is defined), but not for all operand
sizes. In particular, 64-bit atomic load is problematic on i386
* cache check results for Windows
* remove the test for HAVE_CXXABI_H (HAVE_ABI_CXA_DEMANGLE is
suffifient)
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don't include #include directives into .pp files
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including the big commit
commit 305130361bf72726de220f3d2b2787395e10be61
Author: Marc Alff <marc.alff@oracle.com>
Date: Tue Feb 10 11:31:32 2015 +0100
WL#8354 BACKPORT DIGEST IMPROVEMENTS TO MYSQL 5.6
(with the following commits) and related changes in sql/
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