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digitalmars.D.bugs - [Issue 236] New: Class literal expression always says "base classes expected"

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=236

           Summary: Class literal expression always says "base classes
                    expected"
           Product: D
           Version: 0.162
          Platform: PC
        OS/Version: Windows
            Status: NEW
          Keywords: rejects-valid
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: bugzilla digitalmars.com
        ReportedBy: jarrett.billingsley gmail.com


I never ran into this before, and I kind of wonder why.

void delegate() foo()
{
        return &(new class
        {

                void dg()
                {
                        writefln("delegate!");
                }
        }).dg;
}

This gives the error "base classes expected" for the class literal.  I guess I
never ran into it because all the class literals I ever wrote derived from
other classes.  I tried this in several versions of DMD all the way back to
0.126, and they all give the same error.  According to the spec, base classes
are optional for class literals.  I should be able to write "new class {}" and
it should be fine.

The semantic equivalent works just fine:

void delegate() foo()
{
        class fofof
        {
                void dg()
                {
                        writefln("delegate!");
                }
        }

        return &(new fofof).dg;
}


-- 
Jul 02 2006
next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=236


jpelcis gmail.com changed:

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




------- Comment #1 from jpelcis gmail.com  2006-07-18 16:38 -------
Fixed DMD 0.163.


-- 
Jul 18 2006
prev sibling parent Thomas Kuehne <thomas-dloop kuehne.cn> writes:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

d-bugmail puremagic.com schrieb am 2006-07-02:
 http://d.puremagic.com/issues/show_bug.cgi?id=236

 I never ran into this before, and I kind of wonder why.

 void delegate() foo()
 {
         return &(new class
         {

                 void dg()
                 {
                         writefln("delegate!");
                 }
         }).dg;
 }

 This gives the error "base classes expected" for the class literal.  I guess I
 never ran into it because all the class literals I ever wrote derived from
 other classes.  I tried this in several versions of DMD all the way back to
 0.126, and they all give the same error.  According to the spec, base classes
 are optional for class literals.  I should be able to write "new class {}" and
 it should be fine.

 The semantic equivalent works just fine:

 void delegate() foo()
 {
         class fofof
         {
                 void dg()
                 {
                         writefln("delegate!");
                 }
         }

         return &(new fofof).dg;
 }

Added to DStress as http://dstress.kuehne.cn/run/c/class_26_A.d http://dstress.kuehne.cn/run/c/class_26_B.d Thomas -----BEGIN PGP SIGNATURE----- iD8DBQFE4Z86LK5blCcjpWoRAnVaAJ91paqlf+5cmbO8IhSRRAdOHuMnEQCdE8Lp /MUhZsGnq18Le2uppLjHkdE= =z9aB -----END PGP SIGNATURE-----
Aug 15 2006