#23155 [NEW]: The COM interface can't support pass by reference

From: wanght at hotmail dot com Operating system: Window 2K English PHP version: 4.3.1 PHP Bug Type: COM related Bug description: The COM interface can't support pass by reference I wrote a simple COM object using VC & ATL. Here a part of code HRESULT FetchValue([in, out]int* iValue, [out]int* iResult) STDMETHODIMP CSimpleCom::FetchValue(int* iValue, int* iResult) { int iTemp = *iValue + 10; *iValue = iTemp; *iResult = iTemp; return S_OK; } I wrote a PHP script to invoke this method. It can't get the new value from this function. <?php echo "Call Com Object<br>"; $instance = new COM("comtest.SimpleCom"); $value = 15; $result =10; $instance->FetchValue(&$value, &$result); echo "<b>Access function <i>void FetchValue(int*, int*): </i></b>"; echo "Output result: ".$result."<br>"; echo "Output value: ".$value."<br>"; $instance->release(); ?> After reading the source code, I found the function php_pval_to_variant in conversion.c didn't check if the variale is passed by reference. Am I right? Maybe this is the problem. By the way, this is a little bug in the COM interface function. php_VARIANT_call_function_handler (VARIANT.c) call function VariantInit(), and then call php_pval_to_variant_ex(conversion.c) --> php_pval_to_variant_ex2(conversion.c), the function VariantInit() has been called again. But in another invocation path do_COM_invoke(COM.c) -> php_pval_to_variant(conversion.c) -> php_pval_to_variant_ex2, the function VariantInit() is only invoked once. -- Edit bug report at http://bugs.php.net/?id=23155&edit=1 -- Try a CVS snapshot: http://bugs.php.net/fix.php?id=23155&r=trysnapshot Fixed in CVS: http://bugs.php.net/fix.php?id=23155&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=23155&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=23155&r=needtrace Try newer version: http://bugs.php.net/fix.php?id=23155&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=23155&r=support Expected behavior: http://bugs.php.net/fix.php?id=23155&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=23155&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=23155&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=23155&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=23155&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=23155&r=dst IIS Stability: http://bugs.php.net/fix.php?id=23155&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=23155&r=gnused