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BUG#32580 (mysqlbinlog cannot read binlog event generated by user variable usage):

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The client program 'mysqlbinlog' crashed when trying to print a User_var_log_event holding
a floating-point value since the format specifier for my_b_printf() does not support
floating-point format specifiers.

This patch prints the floating-point number to an internal buffer, and then writes
that buffer to the output instead.


mysql-test/r/mysqlbinlog.result:
  Result file change.
mysql-test/t/mysqlbinlog.test:
  Adding test that mysqlbinlog can write and read back User_var_log_event
  for real, decimal, integer, and string. These are the only types supported
  for user variables.
sql/log_event.cc:
  Using my_sprintf() to print floating-point value of User_var_log_event value to a
  character buffer and then to the real output, since my_b_printf() does not
  support floating-point format. Also adding macro to give buffer size needed 
  for printing floating-point numbers in %g format.
This commit is contained in:
unknown
2007-11-23 14:41:41 +01:00
parent 64f6ce046f
commit dc8d5bc7ba
3 changed files with 65 additions and 1 deletions
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25
mysql-test/r/mysqlbinlog.result
View File

@@ -351,4 +351,29 @@ a b
1 root@localhost
DROP DATABASE mysqltest1;
DROP USER untrusted@localhost;
BUG#32580: mysqlbinlog cannot read binlog event with user variables
USE test;
SET BINLOG_FORMAT = STATEMENT;
FLUSH LOGS;
CREATE TABLE t1 (a_real FLOAT, an_int INT, a_decimal DECIMAL(5,2), a_string CHAR(32));
SET @a_real = rand(20) * 1000;
SET @an_int = 1000;
SET @a_decimal = CAST(rand(19) * 999 AS DECIMAL(5,2));
SET @a_string = 'Just a test';
INSERT INTO t1 VALUES (@a_real, @an_int, @a_decimal, @a_string);
FLUSH LOGS;
SELECT * FROM t1;
a_real 158.883
an_int 1000
a_decimal 907.79
a_string Just a test
DROP TABLE t1;
>> mysqlbinlog var/log/master-bin.000019 > var/tmp/bug32580.sql
>> mysql test < var/tmp/bug32580.sql
SELECT * FROM t1;
a_real 158.883
an_int 1000
a_decimal 907.79
a_string Just a test
DROP TABLE t1;
End of 5.1 tests