How to repeat(and it's self-explaining):
ODBC_TEST(unbound_null)
{
SQLHANDLE Ard;
OK_SIMPLE_STMT(Stmt, "SELECT NULL");
CHECK_STMT_RC(Stmt, SQLGetStmtAttr(Stmt, SQL_ATTR_APP_ROW_DESC, &Ard, 0, NULL));
CHECK_DESC_RC(Ard, SQLSetDescField(Ard, 1, SQL_DESC_TYPE, (SQLPOINTER)SQL_NUMERIC, 0));
CHECK_STMT_RC(Stmt, SQLFetch(Stmt));
CHECK_STMT_RC(Stmt, SQLFreeStmt(Stmt, SQL_CLOSE));
return OK;
}
This bug affects ADO, as similar sequence of actions is possible with CursorLocation adUseClient
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Bug
Major
The fix and the testcase have been pushed to odbc-3.0(ed92516) and odbc-2.0(d93b0b8)