I am making an attempt convert Lua to D. This is less about the conversion and more about exploring the tooling to make it happen.

I have chosen to do this file by file and attempting to start with linint. I wanted to make use of dpp, however I hit a segmentation fault and reduced dependency.

https://github.com/JesseKPhillips/lua/blob/dpp/init/linit.d

I wasn't able to get a core dump for debugging. Anyone willing to give some advice or solution? I have gone through a number of compilers and better.

I have implemented a build pipeline but didn't incorporate the D portion at this time.

On Thursday, 5 March 2020 at 07:44:21 UTC, Jesse Phillips wrote:
> I am making an attempt convert Lua to D. This is less about the conversion and more about exploring the tooling to make it happen.
>
> I have chosen to do this file by file and attempting to start with linint. I wanted to make use of dpp, however I hit a segmentation fault and reduced dependency.
>
> https://github.com/JesseKPhillips/lua/blob/dpp/init/linit.d
>
> I wasn't able to get a core dump for debugging. Anyone willing to give some advice or solution? I have gone through a number of compilers and better.
>
> I have implemented a build pipeline but didn't incorporate the D portion at this time.

I am only guessing, but I think the problem is line 87.
Arrays and slices in D contain a length field and thus do not need to be null terminated.
The foreach at line 96 iterates on all valid indices and thus in the last iteration you call luaL_requiref(L, null, null, 1).

Try changing

static const luaL_Reg[] loadedlibs = [
  ...
  {LUA_DBLIBNAME, &luaopen_debug},
  {null, null}
];

to

static const luaL_Reg[] loadedlibs = [
  ...
  {LUA_DBLIBNAME, &luaopen_debug}
];

On Thursday, 5 March 2020 at 16:54:35 UTC, AB wrote:
> I am only guessing, but I think the problem is line 87.
> Arrays and slices in D contain a length field and thus do not need to be null terminated.
> The foreach at line 96 iterates on all valid indices and thus in the last iteration you call luaL_requiref(L, null, null, 1).
>
> Try changing
>
> static const luaL_Reg[] loadedlibs = [
>   ...
>   {LUA_DBLIBNAME, &luaopen_debug},
>   {null, null}
> ];
>
> to
>
> static const luaL_Reg[] loadedlibs = [
>   ...
>   {LUA_DBLIBNAME, &luaopen_debug}
> ];

I knew I was blind, thank you. Segfault is gone.

Now I should look at getting the CI up and Test failure fixed.

On Saturday, 7 March 2020 at 01:14:14 UTC, Jesse Phillips wrote:

> Now I should look at getting the CI up and Test failure fixed.

Test failures were my local system and related to the stack overflow tests.

I have the build pipeline up and running but hit a couple of snags.
https://github.com/JesseKPhillips/lua/runs/493866555?check_suite_focus=true

* Couldn't use dpp in the build because I couldn't install libclang-dev on the runner (ubuntu repository issue)
* The compiler couldn't locate libphobos

I think I'll be able to make use of dpp locally though.