[jira] [Resolved] (TRAFODION-2725) SQL types are REAL, FLOAT, and DOUBLE. Some values are inserted, a stack overflow occurs when SQLGetData is executed.

["liu ming (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TRAFODION-2725?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

liu ming resolved TRAFODION-2725.
---------------------------------
    Resolution: Fixed

> SQL types are REAL, FLOAT, and DOUBLE. Some values are inserted, a stack overflow occurs when SQLGetData is executed.
> ---------------------------------------------------------------------------------------------------------------------
>
>                 Key: TRAFODION-2725
>                 URL: https://issues.apache.org/jira/browse/TRAFODION-2725
>             Project: Apache Trafodion
>          Issue Type: Bug
>          Components: client-odbc-windows
>    Affects Versions: 2.2-incubating
>            Reporter: 苏锦佩
>             Fix For: 2.2-incubating
>
>
> The inserted value is -2.22507e-308, and the SQLGetData receive buffer is greater than 256，when the double column data is fetched, the program sends a crash.
> example:
> TCHAR tempbuf[256] = {0};
> SQLExecDirect(hstmt, (SQLTCHAR*)"CREATE TABLE TB_DOUBLE (ID INT, C DOUBLE PRECISION)", SQL_NTS);
> SQLExecDirect(hstmt, (SQLTCHAR*)"INSERT INTO TB_DOUBLE VALUES (1,-2.22507e-308)", SQL_NTS);
> SQLExecDirect(hstmt, (SQLTCHAR*)"SELECT * FROM TB_DOUBLE", SQL_NTS);
> SQLNumResultCols(hstmt, &numOfCols);
> SQLFetch(hstmt);
> for(i = 1; i <= numOfCols; i++){
> SQLGetData(hstmt,(SWORD)i,SQL_C_CHAR,tempbuf,sizeof(tempbuf),&len);
> ｝



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