MSDN code is incorrect?

Hi, ALL,
The code sample at this link contains an error:

Code:

void printStatementResult(SQLHSTMT hstmt)

{

   int bufferSize = 1024, i;

   SQLRETURN retCode;

   SQLSMALLINT numColumn = 0, bufferLenUsed;

   SQLPOINTER* columnLabels = (SQLPOINTER *)malloc( numColumn * sizeof(SQLPOINTER*) );

   struct DataBinding* columnData = (struct DataBinding*)malloc( numColumn * sizeof(struct DataBinding) );



   retCode = SQLNumResultCols(hstmt, &numColumn);



   printf( "Columns from that table:\n" );

   for ( i = 0 ; i < numColumn ; i++ )

   {

      columnLabels[i] = (SQLPOINTER)malloc( bufferSize*sizeof(char) );



      retCode = SQLColAttribute(hstmt, (SQLUSMALLINT)i + 1, SQL_DESC_LABEL, columnLabels[i], (SQLSMALLINT)bufferSize, &bufferLenUsed, NULL);

      wprintf( L"Column %d: %s\n", i, (wchar_t*)columnLabels[i] );

   }

// more code

}

The numColumn variable is set to 0 and it is local. Then the value of 0 is used in the malloc call, which creates an array of 0 length in the next 2 lines.

I think the call to SQLNumResultCols() should be done before the calls to malloc().

Any idea why it was done like this?

Thank you.