func: void bad() wchar_t * data ; map < int , wchar_t * > dataMap ; wchar_t * dataBadBuffer = ( wchar_t * ) ALLOCA ( 50 * sizeof ( wchar_t ) ) ; data = dataBadBuffer; data [ 0 ] = L '\0' dataMap [ 0 ] = data; dataMap [ 1 ] = data; dataMap [ 2 ] = data; badSink ( dataMap ); void badSink(map<int, wchar_t *> dataMap) wchar_t * data = dataMap [ 2 ] ; wchar_t source [ 100 ] ; wmemset ( source , L 'C' , 100 - 1 source [ 100 - 1 ] = L '\0' memcpy ( data , source , 100 * sizeof ( wchar_t ) ); printWLine ( data ); void printWLine (const wchar_t * line) if ( line != NULL )  wprintf ( L "%ls\n" , line ) 