Hello!

Can somebody give a relevant example shows how to use C++ classes in D? I've used the exmaple from https://dlang.org/spec/cpp_interface.html but I get a segmentation fault as result of D application. My application shows "Program exited with code -11"

Thanks.

On Saturday, 1 April 2017 at 07:37:25 UTC, ANtlord wrote:
> Hello!
>
> Can somebody give a relevant example shows how to use C++ classes in D? I've used the exmaple from https://dlang.org/spec/cpp_interface.html but I get a segmentation fault as result of D application. My application shows "Program exited with code -11"
>
> Thanks.

This page has many examples. Which exactly do you try to run and how do you build it? Which compilers, OS?

On Saturday, 1 April 2017 at 16:39:28 UTC, FreeSlave wrote:
> This page has many examples. Which exactly do you try to run and how do you build it? Which compilers, OS?

My bad. I've tested example under caption Using C++ Classes From D. I used several combinations of compilers, and no one works for me.
OS: ArchLinux
D compilers: DMD 2.073.2, LDC 1.1.0
C++ compiler: gcc 6.3.1, clang 3.9

Also I've created reposotory contains test project. Anyone can take a look on that for clearance. https://github.com/ANtlord/cpp_to_d_test

On Sunday, 2 April 2017 at 09:58:19 UTC, ANtlord wrote:
> On Saturday, 1 April 2017 at 16:39:28 UTC, FreeSlave wrote:
>> This page has many examples. Which exactly do you try to run and how do you build it? Which compilers, OS?
>
> My bad. I've tested example under caption Using C++ Classes From D. I used several combinations of compilers, and no one works for me.
> OS: ArchLinux
> D compilers: DMD 2.073.2, LDC 1.1.0
> C++ compiler: gcc 6.3.1, clang 3.9
>
> Also I've created reposotory contains test project. Anyone can take a look on that for clearance. https://github.com/ANtlord/cpp_to_d_test

I've tested also on Ubuntu 16.04 and DMD v2.073.1 with gcc 5.4.0

On Sunday, 2 April 2017 at 09:58:19 UTC, ANtlord wrote:
> On Saturday, 1 April 2017 at 16:39:28 UTC, FreeSlave wrote:
>> This page has many examples. Which exactly do you try to run and how do you build it? Which compilers, OS?
>
> My bad. I've tested example under caption Using C++ Classes From D. I used several combinations of compilers, and no one works for me.
> OS: ArchLinux
> D compilers: DMD 2.073.2, LDC 1.1.0
> C++ compiler: gcc 6.3.1, clang 3.9
>
> Also I've created reposotory contains test project. Anyone can take a look on that for clearance. https://github.com/ANtlord/cpp_to_d_test

Now I see. 'Using C++ Classes From D' crashes for me too. It also returns the wrong value from 'field' method. Should be 5, but it returns 0. Probably regression.

On Sunday, 2 April 2017 at 16:02:06 UTC, FreeSlave wrote:
> On Sunday, 2 April 2017 at 09:58:19 UTC, ANtlord wrote:
>> On Saturday, 1 April 2017 at 16:39:28 UTC, FreeSlave wrote:
>>> This page has many examples. Which exactly do you try to run and how do you build it? Which compilers, OS?
>>
>> My bad. I've tested example under caption Using C++ Classes From D. I used several combinations of compilers, and no one works for me.
>> OS: ArchLinux
>> D compilers: DMD 2.073.2, LDC 1.1.0
>> C++ compiler: gcc 6.3.1, clang 3.9
>>
>> Also I've created reposotory contains test project. Anyone can take a look on that for clearance. https://github.com/ANtlord/cpp_to_d_test
>
> Now I see. 'Using C++ Classes From D' crashes for me too. It also returns the wrong value from 'field' method. Should be 5, but it returns 0. Probably regression.

Funny thing: If I replace interface with abstract class, it works as it should.

On Sunday, 2 April 2017 at 16:03:51 UTC, FreeSlave wrote:
> On Sunday, 2 April 2017 at 16:02:06 UTC, FreeSlave wrote:
>> On Sunday, 2 April 2017 at 09:58:19 UTC, ANtlord wrote:
>>> [...]
>>
>> Now I see. 'Using C++ Classes From D' crashes for me too. It also returns the wrong value from 'field' method. Should be 5, but it returns 0. Probably regression.
>
> Funny thing: If I replace interface with abstract class, it works as it should.

Reported issue: https://issues.dlang.org/show_bug.cgi?id=17293

On Sunday, 2 April 2017 at 16:03:51 UTC, FreeSlave wrote:
>
> Funny thing: If I replace interface with abstract class, it works as it should.

Also I noticed that removing inheritance in library and in application makes unexpected results. When I try to output field `field` I get incorrect random value. It looks like that the field is got by wrong address. For clearance I created branch `removed-inheritance`.