Hi all.
The following code makes the compiler segfault:
import std.stdio, std.string;
void main()
{
writefln(split("A b"));
}
-- 
---
Life is either tragedy or comedy.
 Usually it's your choice. You can whine or you can laugh.
--Animorphs

On Fri, 22 Jul 2005 17:52:14 -0400, Ameer Armaly wrote:

> Hi all.
> The following code makes the compiler segfault:
> import std.stdio, std.string;
> void main()
> {
> writefln(split("A b"));
> }

The split() function returns a set of slices into its parameter. If you are running on Linux, the string literal is in protected RAM so writes to it will fail.

When I run your test on Windows, I just get a bad format code message.

Here is my version of your test to make it work ...


import std.stdio, std.string;
void main()
{
    foreach(char[] s; split("A b".dup))
        writefln(s);
}


-- 
Derek Parnell
Melbourne, Australia
23/07/2005 8:59:00 PM

"Ameer Armaly" <ameer_armaly@hotmail.com> wrote in message news:dbrprs$1pb6$1@digitaldaemon.com...
> Hi all.
> The following code makes the compiler segfault:
> import std.stdio, std.string;
> void main()
> {
> writefln(split("A b"));
> }

I think you wanted to post this to D.bugs and not D.announce.
On Windows the compiler didn't seg-v (since you say seg-v I assume you're on
Linux, though) but it does give a FormatError when you run the program.
That's because general dynamic arrays are not handled by
std.format.doFormat. I've fixed up doFormat to write the string
[s_1,s_2,...,s_N] where s_k is the result of calling doFormat recursively on
the kth element of the array. Right now I have it working for dynamic
arrays. I'll try to get static and associative arrays going and send the
result to Walter.

In article <dbteao$6oa$1@digitaldaemon.com>, Ben Hinkle says...
>
>"Ameer Armaly" <ameer_armaly@hotmail.com> wrote in message news:dbrprs$1pb6$1@digitaldaemon.com...
>> Hi all.
>> The following code makes the compiler segfault:
>> import std.stdio, std.string;
>> void main()
>> {
>> writefln(split("A b"));
>> }
>
>I think you wanted to post this to D.bugs and not D.announce.
>On Windows the compiler didn't seg-v (since you say seg-v I assume you're on
>Linux, though) but it does give a FormatError when you run the program.
>That's because general dynamic arrays are not handled by
>std.format.doFormat. I've fixed up doFormat to write the string
>[s_1,s_2,...,s_N] where s_k is the result of calling doFormat recursively on
>the kth element of the array. Right now I have it working for dynamic
>arrays. I'll try to get static and associative arrays going and send the
>result to Walter.
>

With DMD v0.128, this code doesn't segfault on either Windows or Linux during compilation and 'Error: std.format formatArg' is the result when it is run on either.

- Dave

Derek Parnell wrote:
> On Fri, 22 Jul 2005 17:52:14 -0400, Ameer Armaly wrote:
> 
>> Hi all.
>> The following code makes the compiler segfault:
>> import std.stdio, std.string;
>> void main()
>> {
>> writefln(split("A b"));
>> }
> 
> The split() function returns a set of slices into its parameter. If you are
> running on Linux, the string literal is in protected RAM so writes to it
> will fail. 
<snip>

Why would this code cause a write to the string literal?

Stewart.

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