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digitalmars.D.learn - Possible problem with new array

reply bearophile <bearophileHUGS lycos.com> writes:
The following code:



void main() {

  int[1] a = [10];

  int i;

  int[] b = new int[a[i]];

}



Generates this error (DMD V.1.028):

need size of rightmost array, not type a[i]



Is this a DMD bug or an error of mine?



Thank you,

bear hugs,

bearophile
May 01 2008
next sibling parent reply boyd <gaboonviper gmx.net> writes:
I've been trying to work with the D2 xml module. It compiles fine, but  =

when I run it I get an access violation. Am I doing something wrong?

module main;

import std.stdio;
import std.file;
import std.xml;

int main(){
     string s =3D cast(string)std.file.read("widget.xml");

     check(s);
     auto doc =3D new Document(s);
     writefln(doc);

     return 0;
}

Cheers,
Boyd
May 02 2008
parent reply Gide Nwawudu <gide btinternet.com> writes:
On Fri, 02 May 2008 09:34:00 +0200, boyd <gaboonviper gmx.net> wrote:


I've been trying to work with the D2 xml module. It compiles fine, but  
when I run it I get an access violation. Am I doing something wrong?

module main;

import std.stdio;
import std.file;
import std.xml;

int main(){
     string s = cast(string)std.file.read("widget.xml");

     check(s);
     auto doc = new Document(s);
     writefln(doc);

     return 0;
}

Cheers,
Boyd



If widget.xml is malformed, it crashes. Probably a bug.

Tested with the following; the first errors, the second version  is
ok.

[widget.xml]
<?xml version="1.0"?><widget>
[/widget.xml]

[widget.xml]
<?xml version="1.0"?><widget></widget>
[/widget.xml]

Gide
May 02 2008
parent boyd <gaboonviper gmx.net> writes:
Except that the check(s) function that is supposed to check this, didn't=
  =

give any errors.

I found the bug though. Apparently if a closed <node/> is written inside=
  =

another node, an access violation occurs.

works:
	<?xml version=3D"1.0"?><tag/>

doesn't work:
	<?xml version=3D"1.0"?><something><tag/></something>

I'll post this on bugzilla. Thanks for trying to help though.

Cheers,
Boyd

-------
On Fri, 02 May 2008 14:38:36 +0200, Gide Nwawudu <gide btinternet.com>  =

wrote:


 On Fri, 02 May 2008 09:34:00 +0200, boyd <gaboonviper gmx.net> wrote:


 I've been trying to work with the D2 xml module. It compiles fine, bu=







 when I run it I get an access violation. Am I doing something wrong?

 module main;

 import std.stdio;
 import std.file;
 import std.xml;

 int main(){
     string s =3D cast(string)std.file.read("widget.xml");

     check(s);
     auto doc =3D new Document(s);
     writefln(doc);

     return 0;
 }

 Cheers,
 Boyd



 If widget.xml is malformed, it crashes. Probably a bug.

 Tested with the following; the first errors, the second version  is
 ok.

 [widget.xml]
 <?xml version=3D"1.0"?><widget>
 [/widget.xml]

 [widget.xml]
 <?xml version=3D"1.0"?><widget></widget>
 [/widget.xml]

 Gide
May 02 2008
prev sibling parent Gide Nwawudu <gide btinternet.com> writes:
On Thu, 01 May 2008 20:50:05 -0400, bearophile
<bearophileHUGS lycos.com> wrote:


The following code:



void main() {

  int[1] a = [10];

  int i;

  int[] b = new int[a[i]];

}



Generates this error (DMD V.1.028):

need size of rightmost array, not type a[i]



Is this a DMD bug or an error of mine?



It doesn't compile on D2.013 either, looks like a bug. The workaround
is to put a[i] in parenthesis.


  int[] b = new int[a[i]];




Gide
May 02 2008