Re: Default param, is this legal
* Stuart Redmann, on 14.07.2010 14:26:
On 7/14/2010 Francesco S. Carta wrote:
You're using a keyword as an identifier, hence that code cannot be
compiled, I don't need to try it in order to know it.
Now tell me that you actually copied and pasted it from the code you
compiled - I don't want to appear harsh, but "post the exact code you're
feeding to the compiler" has not two meanings.
On 14 Jul. Simon wrote:
What do you think I did?
Don't you think by know you should get off your mighty horse, put it in
the complier and admit that maybe, just maybe, you are wrong.
Out of curiosity I compiled the code from Simon with VC2008, and it
compiles the misplaced keyword "default" just fine. That's obviously a
bug.
@Francesco:
@Alf: Both of you should re-read the Hitchhiker's Guide to the
Galaxy, especially the part about Wonko the Sane.
@Simon: You were right. However, since this is a newsgroup, and you
are trying to get some advice from others, you should never, ever get
mad at somebody who is spending time/effort to answer you. Not even if
they do. Else you may quickly end up on other people's ignore list.
Just my 2cents.
This is embarassing -- for Microsoft.
<example>
C:\test> type x.cpp
class MyClass
{
public:
MyClass(){}
~MyClass(){}
};
const MyClass& GetMyClass( const MyClass& default = MyClass() )
{
throw -1;
}
int main()
{
}
C:\test> cl x.cpp
Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 13.10.6030 for 80x86
Copyright (C) Microsoft Corporation 1984-2002. All rights reserved.
x.cpp
x.cpp(8) : error C2143: syntax error : missing ')' before 'default'
x.cpp(8) : error C2143: syntax error : missing ';' before 'default'
x.cpp(8) : error C2059: syntax error : ')'
x.cpp(9) : error C2143: syntax error : missing ';' before '{'
x.cpp(9) : error C2447: '{' : missing function header (old-style formal list?)
C:\test> "c:\program files\Microsoft Visual Studio 9.0\Common7\Tools\vsvars32.bat"
Setting environment for using Microsoft Visual Studio 2008 x86 tools.
C:\test> cl x.cpp
Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 15.00.30729.01 for 80x86
Copyright (C) Microsoft Corporation. All rights reserved.
x.cpp
Microsoft (R) Incremental Linker Version 9.00.30729.01
Copyright (C) Microsoft Corporation. All rights reserved.
/out:x.exe
x.obj
C:\test> cl /W4 x.cpp
Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 15.00.30729.01 for 80x86
Copyright (C) Microsoft Corporation. All rights reserved.
x.cpp
x.cpp(8) : warning C4100: 'default' : unreferenced formal parameter
Microsoft (R) Incremental Linker Version 9.00.30729.01
Copyright (C) Microsoft Corporation. All rights reserved.
/out:x.exe
x.obj
C:\test> _
</example>
Uh oh.
Cheers,
- Alf
--
blog at <url: http://alfps.wordpress.com>