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digitalmars.D.bugs - [Issue 10199] New: labels cannot be used without a statement

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=10199

           Summary: labels cannot be used without a statement
           Product: D
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody puremagic.com
        ReportedBy: monarchdodra gmail.com


--- Comment #0 from monarchdodra gmail.com 2013-05-29 03:05:54 PDT ---
Basically, if I have a "end:" label, that is followed by nothing (because,
well, end; the function is over), it is considered wrong:

//-----
void main()
{
    goto end;
    end: //main.d(5): Error: found '}' instead of statement
}
//-----

Workaround is to use a dummy statement:

//-----
void main()
{
    goto end;
    end: ; //OK: Found a statement
}
//-----

I'd also note that the workaround should be considered a bug, just the same way
you aren't allowed to use an empty statement after a if/else/for/while.

I think the workaround should be turned down, in favor of:

//-----
void main()
{
    goto end;
    end: {} //OK: Found an (explicitly empty) statement
}
//-----

But this point is minor, the problem is that a label *can't* be used without an
identifier.

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parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=10199


Alex Rønne Petersen <alex lycus.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |alex lycus.org
         Resolution|                            |INVALID


--- Comment #1 from Alex Rønne Petersen <alex lycus.org> 2013-05-29 12:09:07
CEST ---
This is by design. Labels in D aren't just "labels", they are labelled
statements; not the same thing as in C. You're supposed to use `{}` to denote
an empty statement to jump to. `;` being allowed is a legacy artifact that will
(hopefully!) be killed eventually.

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