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fixes for gcc 4.8 - compilation warnings and -fsanitize=address
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Field_enum incorrectly inherited decimals() from Field_string.
Field_enum should be always integer in numeric context.
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(even if the server and libraries itself use stpcpy instead of it)
It is a workaround that allows myodbc built by certain distributions' (CentOS,Fedora) to peacefully coexist with mariadb client libraries.
The problem is that MyODBC in these distros needs strmov() to be exported by mysql client shared library, or else myodbc fails to load.
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Both <width> and <precision> can be specified as numbers or '*'.
If an asterisk is used, an argument of type int is consumed.
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frac is the number of decimal digits after the point
For each multiplication in the expression, decimal_mul() does this:
to->frac= from1->frac + from2->frac; /* store size in digits */
which will eventually overflow.
The code for handling the overflow, will truncate the two digits in "1.75" to "1"
Solution:
Truncate to 31 significant fractional digits, when doing decimal multiplication.
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HANDLE_FATAL_SIGNAL IN STRNLEN
Fixed the following bounds checking problems :
1. in check_if_legal_filename() make sure the null terminated
string is long enough before accessing the bytes in it.
Prevents pottential read-past-buffer-end
2. in my_wc_mb_filename() of the filename charset check
for the end of the destination buffer before sending single
byte characters into it.
Prevents write-past-end-of-buffer (and garbaling stack in
the cases reported here) errors.
Added test cases.
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Rewrite the "parser" in my_strtod_int() to avoid
reading past the end of the input string.
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converting to DECIMAL" on a query with aggregate functions and GROUP BY
fix: don't call field->val_decimal() if the field->is_null()
because the buffer at field->ptr might not hold a valid decimal value
sql/item_sum.cc:
do not call field->val_decimal() if the field->is_null()
storage/maria/ma_blockrec.c:
cleanup
storage/maria/ma_rrnd.c:
cleanup
strings/decimal.c:
typo
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Various places in the server replication code was incorrectly quoting
strings, which could lead to incorrect SQL on the slave/mysqlbinlog.
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Updated test to also work on 32 bit
mysql-test/suite/heap/heap.test:
Updated test to also work on 32 bit
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mysql-test/suite/innodb/t/group_commit_crash.test:
remove autoincrement to avoid rbr being used for insert ... select
mysql-test/suite/innodb/t/group_commit_crash_no_optimize_thread.test:
remove autoincrement to avoid rbr being used for insert ... select
mysys/my_addr_resolve.c:
a pointer to a buffer is returned to the caller -> the buffer cannot be on the stack
mysys/stacktrace.c:
my_vsnprintf() is ok here, in 5.5
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- Avoid needless load/stores in my_hash_sort_simple due to possible aliasing
- Avoid expensive Join_plan_state constructor in choose_subquery_plan when no subquery
- Avoid calling update_virtual_fields for every row when no virtual fields.
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Added the logger service that provides us with the rotating logs.
The plugin SQL_ERROR_LOG added. It logs the errors using the 'logger service'
for the rotating log files.
the example record from the log:
2012-03-09 15:07:29 root[root] @ localhost [] ERROR 1146: Table 'test.xyz' doesn't exist : select * from test.xyz
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Bug#12985021 SIMPLE QUERY WITH DECIMAL NUMBERS TAKE AN
When parsing the fractional part of a string which
is to be converted to double, we can stop after a few digits:
the extra digits will not contribute to the actual result anyways.
mysql-test/r/func_str.result:
New tests.
mysql-test/t/func_str.test:
New tests.
strings/dtoa.c:
The problem was s2b() multiplying and adding hundreds-of-thousands
of ever smaller fractions.
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UTF8_GENERAL_CI
Introducing new collations:
utf8_general_mysql500_ci and ucs2_general_mysql500_ci,
to reproduce behaviour of utf8_general_ci and ucs2_general_ci
from mysql-5.1.23 (and earlier).
The collations are added to simplify upgrade from mysql-5.1.23 and earlier.
Note: The patch does not make new server start over old data automatically.
Some manual upgrade procedures are assumed.
Paul: please get in touch with me to discuss upgrade procedures
when documenting this bug.
modified:
include/m_ctype.h
mysql-test/r/ctype_utf8.result
mysql-test/t/ctype_utf8.test
mysys/charset-def.c
strings/ctype-ucs2.c
strings/ctype-utf8.c
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no_error handling for select (used by INSERT ... SELECT) still needs to be fixed, but I will do that in a separate commit
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>=5.0
Buffer over-run on all platforms, crash on windows, wrong result on other platforms,
when rounding numbers which start with 999999999 and have
precision = 9 or 18 or 27 or 36 ...
mysql-test/r/type_newdecimal.result:
New test cases.
mysql-test/t/type_newdecimal.test:
New test cases.
sql/my_decimal.h:
Add sanity checking code, to catch buffer over/under-run.
strings/decimal.c:
The original initialization of intg1 (add 1 if buf[0] == DIG_MAX)
will set p1 to point outside the buffer, and the loop to copy the original value
while (buf0 < p0)
*(--p1) = *(--p0);
will overwrite memory outside the my_decimal object.
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Fixed up copyright messages.
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in RelWithDebInfo build
Fixed memory leak printing when doing 'mysqld --version', 'mysqld --debug --help' and 'mysqld --debug --help --verbose'
mysys/my_init.c:
Moved checking if we should call DBUG_END() before my_thread_end() as otherwise we will not free DBUG variables and files.
mysys/thr_lock.c:
Fixed compiler warning
sql/mysqld.cc:
Fixed memory leaks when using mysqld --help and mysqld --version
Added --debug as an option that works for all builds. For non debug builds we now get a warning.
strings/dtoa.c:
Fixed valgrind warning (c could contain data outside of the given string)
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