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digitalmars.D.bugs - [Issue 5143] New: Static array of function literals

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=5143

           Summary: Static array of function literals
           Product: D
           Version: D2
          Platform: x86
        OS/Version: Windows
            Status: NEW
          Keywords: rejects-valid
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody puremagic.com
        ReportedBy: bearophile_hugs eml.cc


--- Comment #0 from bearophile_hugs eml.cc 2010-10-31 06:15:06 PDT ---
This code works correctly with DMD 2.050:


void f1(int a) {}
static void function(int a)[] foo = [&f1];
void main() {}


But this doesn't compile:


static void function(int a)[] foo = [function(int a) {}];
void main() {}


The error message:

test.d(1): Error: non-constant expression __funcliteral1

I think this second version of the code too is correct.

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next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=5143


Adrian Matoga <epi atari8.info> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |epi atari8.info


--- Comment #1 from Adrian Matoga <epi atari8.info> 2010-10-31 07:33:54 PDT ---
upvoted!

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prev sibling next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=5143


Denis Derman <denis.spir gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |denis.spir gmail.com


--- Comment #2 from Denis Derman <denis.spir gmail.com> 2010-10-31 13:07:38 PDT
---
The bug report states an issue about func arrays, but:

    // ok
    void f () {} ;
    static void function() foo = &f ;

    // not ok
    static void function() foo = function void() {};

--> Error: non-constant expression __funcliteral1
It seems to me the issue is that one cannot initialise a function variable with
the expression of a function. (Array or not.)
What does the compiler expect there? What does the error mean? As we have
function literals, they should, I guess, be usable where other literals are
accepted.

Note:
    auto foo = function void() {};
throws the same error.

Denis

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prev sibling next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=5143


Denis Derman <denis.spir gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |http://d.puremagic.com/issu
                   |                            |es/show_bug.cgi?id=2634


--- Comment #3 from Denis Derman <denis.spir gmail.com> 2010-10-31 13:18:01 PDT
---
(In reply to comment #2)

This is already filed as bug 2634 "Function literals are non-constant".
http://d.puremagic.com/issues/show_bug.cgi?id=2634.

Denis

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prev sibling parent d-bugmail puremagic.com writes:
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bearophile_hugs eml.cc changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |DUPLICATE


--- Comment #4 from bearophile_hugs eml.cc 2010-10-31 13:47:12 PDT ---
*** This issue has been marked as a duplicate of issue 2634 ***

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