cannot export whole class

Thomas Kuehne thomas-dloop at kuehne.cn
Wed Sep 13 15:35:27 PDT 2006


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TVMAN schrieb am 2006-08-31:

<snip>

> 2.
> can dmd generate a "pure" header file? that is, no any code in generated .di
> file.
> ----------------------
> void test()
> {
>   int a = 0;
> }
> ----------------------
> this function will not changed in .di file
>
> ----------------------
> void test()
> {
>   if ( .. )..;
>   int a = 0;
> }
> ----------------------
> this function will become
>
> void test();
>
> this is right

This is a bug, please file file it at
http://d.puremagic.com/issues/

> 3.
> "dmd -release -O ..." works not fine, when compile dwt's ole_com example,
> some useful code be "optimized out". code in oleclientsite.d:
> protected GUID* getClassID(char[] clientName) {
> 	// create a GUID struct to hold the result
> 	GUID* guid = new GUID();
>
> 	// create a null terminated array of wchar
> 	wchar* buffer = null;
> 	if (clientName !is null) {
> 		buffer = Converter.StrToWCHARz(clientName);
> 	}
> 	if (COM.CLSIDFromProgID(buffer, guid) != COM.S_OK){
> 		HRESULT result = COM.CLSIDFromString(buffer, guid);
> 		if (result != COM.S_OK)
> 			OLE.error(__FILE__, __LINE__,
> OLE.ERROR_INVALID_CLASSID, result);
> 	}
> 	return guid;
> }
>
> -------------------------------------
> 	if (clientName !is null) {
> 		buffer = Converter.StrToWCHARz(clientName);
> 	}
> ---------------------------------------
> this have optimizition error
>
> but
> -------------------------------------
> 	if (clientName != null) {
> 		buffer = Converter.StrToWCHARz(clientName);
> 	}
> ---------------------------------------
> have not optimizition error

What exactly is the optimizition error? (I'm not a Windows users.)

Please note that !is and != aren't synonyms:

#
# char[] clientName;
#
# if(clientName !is null){
#    writefln("!is");
# }
#
# if(clientName != null){
#    writefln("!=");
# }
#

Prints only "!is".

#
# char[] clientName = "ming";
#
# if(clientName !is null){
#    writefln("!is");
# }
#
# if(clientName != null){
#    writefln("!=");
# }
#

Prints "!is" and "!=".

Thomas


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