Hi,

this code crashes with a segfault. I need help to understand what might be wrong with it.

import std.array;
import std.algorithm;

void main() {
  auto names = ["file1.txt", "file2.txt", "file3.txt"];  // let these files exist
  auto files = names.map!(f => File(f, "r"))().array();
}

Thanks,

Stephan

Stephan Schiffels:

> this code crashes with a segfault. I need help to understand what might be wrong with it.
>
> import std.array;
> import std.algorithm;
>
> void main() {
>   auto names = ["file1.txt", "file2.txt", "file3.txt"];  // let these files exist
>   auto files = names.map!(f => File(f, "r"))().array();
> }

If I use the latest 2.063beta5 compiler, and I also import std.stdio, then I see no crash on Windows32.

Bye,
bearophile

On Wednesday, 22 May 2013 at 08:38:14 UTC, Stephan Schiffels wrote:
> Hi,
>
> this code crashes with a segfault. I need help to understand what might be wrong with it.
>
> import std.array;
> import std.algorithm;
>
> void main() {
>   auto names = ["file1.txt", "file2.txt", "file3.txt"];  // let these files exist
>   auto files = names.map!(f => File(f, "r"))().array();
> }
>
> Thanks,
>
> Stephan

A quick gdb run shows that it's segfaulting at the exit of the program, when the GC runs its final full collection.

On Wednesday, 22 May 2013 at 11:07:39 UTC, bearophile wrote:
> Stephan Schiffels:
>
>> this code crashes with a segfault. I need help to understand what might be wrong with it.
>>
>> import std.array;
>> import std.algorithm;
>>
>> void main() {
>>  auto names = ["file1.txt", "file2.txt", "file3.txt"];  // let these files exist
>>  auto files = names.map!(f => File(f, "r"))().array();
>> }
>
> If I use the latest 2.063beta5 compiler, and I also import std.stdio, then I see no crash on Windows32.
>
> Bye,
> bearophile

With git master on linux x64 I get a segfault, see my other
comment.

On Wednesday, 22 May 2013 at 11:09:49 UTC, John Colvin wrote:
> On Wednesday, 22 May 2013 at 11:07:39 UTC, bearophile wrote:
>> Stephan Schiffels:
>>
>>> this code crashes with a segfault. I need help to understand what might be wrong with it.
>>>
>>> import std.array;
>>> import std.algorithm;
>>>
>>> void main() {
>>> auto names = ["file1.txt", "file2.txt", "file3.txt"];  // let these files exist
>>> auto files = names.map!(f => File(f, "r"))().array();
>>> }
>>
>> If I use the latest 2.063beta5 compiler, and I also import std.stdio, then I see no crash on Windows32.
>>
>> Bye,
>> bearophile
>
> With git master on linux x64 I get a segfault, see my other
> comment.

OK, thanks for confirming. I updated to the latest git master and still get a segfault. I'll file a bug report.

Stephan