fix binding of bool type in mysql driver

MYSQL_TYPE_TINY should be used for binding bool input value.
MYSQL_TYPE_LONG might be too big for bool, resulting in bools being
saved in the database as int 127. The problem was not specific to
the vendor's BOOL column type.

http://dev.mysql.com/doc/refman/5.0/en/numeric-type-overview.html
http://dev.mysql.com/doc/refman/5.0/en/c-api-prepared-statement-type-codes.html

Added generic autotest to make sure that binding bool works. All
drivers should pass this test.

Task-number: QTBUG-27763
Change-Id: I4e69f8e3b32fffb702ec9fa8a80ff5c50dea954b
Reviewed-by: Andy Shaw <andy.shaw@digia.com>
Reviewed-by: Bill King <bill.king@nokia.com>
(cherry picked from qt5/qtbase commit 593b8f7f0b35ddc424d8ccbd5df11fcf2442858e))

1 files changed, 6 insertions, 1 deletions

diff --git a/src/sql/drivers/mysql/qsql_mysql.cpp b/src/sql/drivers/mysql/qsql_mysql.cpp
index 3e00ce2..b820c86 100644
--- a/src/sql/drivers/mysql/qsql_mysql.cpp
+++ b/src/sql/drivers/mysql/qsql_mysql.cpp
@@ -991,11 +991,16 @@ bool QMYSQLResult::exec()
                     break; }
                 case QVariant::UInt:
                 case QVariant::Int:
-                case QVariant::Bool:
                     currBind->buffer_type = MYSQL_TYPE_LONG;
                     currBind->buffer = data;
                     currBind->buffer_length = sizeof(int);
                     currBind->is_unsigned = (val.type() != QVariant::Int);
+                break;
+                case QVariant::Bool:
+                    currBind->buffer_type = MYSQL_TYPE_TINY;
+                    currBind->buffer = data;
+                    currBind->buffer_length = sizeof(bool);
+                    currBind->is_unsigned = false;
                     break;
                 case QVariant::Double:
                     currBind->buffer_type = MYSQL_TYPE_DOUBLE;