ODBC-207 Fix multi-statement param realloc #29
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Example use case: Prepare the following SQL statement: "INSERT INTO tbl (a,b) VALUES (?,?); SELECT 1 FROM tbl WHERE c = ?" First execution of prepared statement will work, second execution will segfault or cause memory corruption.
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Hello Joshua, Thank you for your contribution! Similar to other open source projects, the MariaDB Corporation needs to have shared ownership of all code that is included in the MariaDB C/ODBC distribution. The easiest way to achieve this is by submitting your code under the BSD-new license. The other alternative is to sign the code contribution agreement which can be found here: https://mariadb.com/kb/en/mariadb/mca/ Please indicate in a comment below that you are contributing your new code of the whole pull request, including one or several files that are either new files or modified ones, under the BSD-new license or that you have filled out the contribution agreement and sent it. Best regards, |
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I am contributing my new code of the whole pull request, including one or several files that are either new files or modified ones, under the BSD-new license. |
Example use case:
Prepare the following SQL statement:
"INSERT INTO tbl (a,b) VALUES (?,?); SELECT 1 FROM tbl WHERE c = ?"
First execution of prepared statement will work, second execution will segfault or cause memory corruption.
Fix is simply to reallocate parameter storage every time the number of parameters changes.