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digitalmars.D.bugs - integral constant must be scalar type, not void

reply Stewart Gordon <smjg_1998 yahoo.com> writes:
Using DMD 0.129, Windows 98SE.

----------
void[10] data;
----------
d:\data\stewart\d\tests\bugs>dmd integral_void.d
integral constant must be scalar type, not void
----------

Both missing filename and line number, and completely meaningless in the 
context.  The code looks valid to me, judging by the fact that .length 
and slicing work on dynamic void[].

(DStress seems to be down at the mo - unless it's my Internet connection 
playing silly donkeys....)

Stewart.

-- 
My e-mail is valid but not my primary mailbox.  Please keep replies on 
on the 'group where everyone may benefit.
Aug 16 2005
parent reply =?ISO-8859-1?Q?Thomas_K=FChne?= <thomas-dloop kuehne.THISISSPAM.cn> writes:
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Stewart Gordon schrieb:

 (DStress seems to be down at the mo - unless it's my Internet connection
 playing silly donkeys....)


Seems to be your connection.

Please try the webinterface of the backup:
http://svn.berlios.de/viewcvs/*checkout*/dstress/www/dstress.html

Thomas
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Aug 16 2005
parent reply Stewart Gordon <smjg_1998 yahoo.com> writes:
Thomas Kühne wrote:

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 Hash: SHA1
 
 Stewart Gordon schrieb:
 

 (DStress seems to be down at the mo - unless it's my Internet connection
 playing silly donkeys....)


 
 Seems to be your connection.
 
 Please try the webinterface of the backup:
 http://svn.berlios.de/viewcvs/*checkout*/dstress/www/dstress.html


Thank you.  It seems to work at the moment....

So, is the testcase I just gave you in there?  I can't seem to find it 
and you haven't posted a link....

But I did notice a typo:

module dtsress.run.v.void_01;
         ^^

Stewart.

-- 
My e-mail is valid but not my primary mailbox.  Please keep replies on 
on the 'group where everyone may benefit.
Aug 17 2005
parent reply =?UTF-8?B?VGhvbWFzIEvDvGhuZQ==?= writes:
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Stewart Gordon schrieb:

 So, is the testcase I just gave you in there?  I can't seem to find it
 and you haven't posted a link....



 ----------
 void[10] data;
 ----------
 d:\data\stewart\d\tests\bugs>dmd integral_void.d
 integral constant must be scalar type, not void
 ----------

 Both missing filename and line number, and completely meaningless in
 the context.  The code looks valid to me, judging by the fact that
 .length and slicing work on dynamic void[].


The following code is illegal:
	void[10] a;
	void b;

Reason: void.init is undefined

You might use:
	void[10] c = void;

Added to DStress as
http://dstress.kuehne.cn/nocompile/v/void_02_A.d
http://dstress.kuehne.cn/nocompile/v/void_02_B.d
http://dstress.kuehne.cn/run/v/void_02_C.d


 But I did notice a typo:
 
 module dtsress.run.v.void_01;
         ^^


Thanks, fixed

Thomas

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Aug 17 2005
parent reply Stewart Gordon <smjg_1998 yahoo.com> writes:
Thomas Kühne wrote:

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 Stewart Gordon schrieb:
 

 So, is the testcase I just gave you in there? I can't seem to find 
 it and you haven't posted a link....


 

 ----------
 void[10] data;
 ----------
 d:\data\stewart\d\tests\bugs>dmd integral_void.d
 integral constant must be scalar type, not void
 ----------
 
 Both missing filename and line number, and completely meaningless 
 in the context. The code looks valid to me, judging by the fact 
 that .length and slicing work on dynamic void[].


 
 The following code is illegal:
 	void[10] a;
 	void b;
 
 Reason: void.init is undefined


<snip>

So why is the length of a void[] writable?

----------
import std.stdio;

void[] data;

void main() {
     data.length = 10;
     foreach (ubyte b; cast(ubyte[]) data) {
         writefln(b);
     }
}
----------

Stewart.

-- 
My e-mail is valid but not my primary mailbox.  Please keep replies on 
on the 'group where everyone may benefit.
Aug 20 2005
parent =?ISO-8859-1?Q?Thomas_K=FChne?= <thomas-dloop kuehne.cn> writes:
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Stewart Gordon schrieb:


 Thomas Kühne wrote:
 

 Stewart Gordon schrieb:


 So, is the testcase I just gave you in there? I can't seem to find it
 and you haven't posted a link....



 ----------
 void[10] data;
 ----------
 d:\data\stewart\d\tests\bugs>dmd integral_void.d
 integral constant must be scalar type, not void
 ----------

 Both missing filename and line number, and completely meaningless in
 the context. The code looks valid to me, judging by the fact that
 .length and slicing work on dynamic void[].



 The following code is illegal:
     void[10] a;
     void b;

 Reason: void.init is undefined


 
 <snip>
 
 So why is the length of a void[] writable?
 
 ----------
 import std.stdio;
 
 void[] data;
 
 void main() {
     data.length = 10;
     foreach (ubyte b; cast(ubyte[]) data) {
         writefln(b);
     }
 }
 ----------


http://www.digitalmars.com/d/arrays.html




Decreasing the void[]'s length is legal, but increasing isn't.
Currently dynamic void's are useless as they can only contain zero elements.

solution A:
define void.init

solution B:
a combination of change length and VoidInitializer for the new array
elements

e.g.
	void[] data;
	data.length(10, void);


http://dstress.kuehne.cn/nocompile/a/array_initialization_19.d

Thomas

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Aug 27 2005