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digitalmars.D.bugs - [Issue 8723] New: Error: function called with argument types:

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=8723

           Summary: Error: function called with argument types:
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody puremagic.com
        ReportedBy: maxim maxim-fomin.ru


--- Comment #0 from Maxim Fomin <maxim maxim-fomin.ru> 2012-09-25 05:30:35 PDT
---
void foo();

void foo()
{

}

void main()
{
    foo(); // here
}

----------------------

hello.d(10): Error: function hello.foo called with argument types:
    (())
matches both:
    hello.foo()
and:
    hello.foo()
-----------------------

Clearly it is a bug.

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next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=8723


Jonathan M Davis <jmdavisProg gmx.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jmdavisProg gmx.com


--- Comment #1 from Jonathan M Davis <jmdavisProg gmx.com> 2012-09-25 09:51:18
PDT ---
Why is that clearly a bug? You gave two functions with identical function
signatures. The only time that you give function prototypes in D are when
you're _not_ providing the source (e.g. inside of .di files or version(D_Ddoc)
blocks).

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--- Comment #2 from Maxim Fomin <maxim maxim-fomin.ru> 2012-09-25 11:35:45 PDT
---
(In reply to comment #1)

 Why is that clearly a bug? You gave two functions with identical function
 signatures. The only time that you give function prototypes in D are when
 you're _not_ providing the source (e.g. inside of .di files or version(D_Ddoc)
 blocks).


No, I gave one function prototype (declaration) and one function definition
with similar name and type. The former has to be binded to the latter. This is
how C works and D should follow it in this regard. There is no reason for
assuming that prototypes and definitions are separated between different
modules and no reason for making feigned ambiguity between function body and
its own declaration.

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--- Comment #3 from Maxim Fomin <maxim maxim-fomin.ru> 2012-09-25 11:37:57 PDT
---
By the way, following code is not compiled either (for the same reason):

struct S;

struct S {}

void main()
{

}

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bearophile_hugs eml.cc changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bearophile_hugs eml.cc


--- Comment #4 from bearophile_hugs eml.cc 2012-09-25 12:12:49 PDT ---
According to D specs I think there are no bugs here. So at best those are two
enhancement requests.

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--- Comment #5 from Jonathan M Davis <jmdavisProg gmx.com> 2012-09-25 13:10:26
PDT ---
And why on earth would you _need_ a prototype? This isn't C. We're not forced
to declare functions higher up in a file before using them. Ideally, prototypes
wouldn't even _exist_. They're an artifact of C's poor compilation model.

Unfortunately, they're necessary for .di files, so we have them, but there's no
reason whatsoever to be declaring a prototype in a .d file.

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Maxim Fomin <maxim maxim-fomin.ru> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |enhancement


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Andrej Mitrovic <andrej.mitrovich gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |andrej.mitrovich gmail.com
         Resolution|                            |INVALID


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Oct 21 2012