Re: Bug in the objective-c++ compiler?

• Subject: Re: Bug in the objective-c++ compiler?
• From: Scott Thompson <email@hidden>
• Date: Wed, 15 Jun 2005 16:13:58 -0500
• Delivered-to: email@hidden
• Delivered-to: email@hidden

For the following simple C++ code (nothing else) and using Xcode 2.1 with gcc4:

namespace Toto {
    enum Protocol {eOther};
    Protocol getProtocol(void) {return eOther;}
}

Can anyone tell me why I'm getting the following error message with the objective-c++ compiler:

main.mm:3: error: 'Toto::Protocol' referred to as 'struct'
main.mm:2: error: 'Toto::Protocol' has a previous declaration here

It appears as if there is a predefined "struct Protocol" in objective-c, and that the objective-c++ compiler is confusing it with Toto::Protocol wich is an enum type.

If I replace the word "Protocol" by anything else, the error message disappears. Also, if I compile with gcc3.3 instead of gcc4, there is not problem.

Is "Protocol" a new reserved keyword in objective-c?

Many thanks in advance,

FWIW, if I copy your text into a new project and rename the file to "test.cpp" I don't receive a message from this code.

Of course, the code is valid in cpp. But copy it in a file called test.mm (or force the compiler to use objective-c++ mode) and you will get the error messages. If you look above (in my error messages), you will see that the error occured in a file called main.mm.

Cheers!

Not that you should have to write the code this way, but try this:

namespace Toto {
    typedef enum tagProtocol { eOther } Protocol;

    Protocol getProtocol(void) {return eOther;}
}

Scott
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