Re: Winelib stack overflow

[David Kahurani]

On Sun, Oct 9, 2022 at 12:03 PM Vitor Ramos  wrote:
> Hello,
>
> I am not sure if this is the appropriate channel but here we go.

The right channel for bugs is to report them at https://bugs.winehq.org/ ...
> I am trying to port a windows c++ application using winelib and I found an issue while using some c++ STL containers.
>
> Here is a minimal example:
>
> # winelib.dll.so
> #include <windows.h>
> #include <unordered_map>
> #include <string>
>
> extern "C"
> int f1(long z)
> {
>     std::unordered_map<int, std::string> y;
>     return 10;
> }
>
> spec file
> ```c++
> 2 stdcall f1(long)
>
> # Building winelib.dll.so
> winemaker --console --dll .
> winebuild --implib -E winedll.spec -o libwinedll.a
> winebuild --fake-module --dll -E winedll.spec -o winedll.dll
> make
>
> cp libwinedll.a winedll.dll.so /usr/local/lib/wine/x86_64-unix
> cp winedll.dll /home/$USER/.wine/drive_c/windows/system32
>
> win64 app
> #include <iostream>
>
> extern "C"{
> int f1(long z);
> }
>
> int main(){
>     int ret = f1(2);
>     std::cout << ret << std::endl;
> }
>
> # Building win64 app
> winemaker . -iwinedll
> make
>
> # Running
> wine64 win64app.exe.so
>
> # Output
> 0110:err:virtual:virtual_setup_exception stack overflow 2128 bytes in thread 0110 addr 0x17008c804 stack 0x207b0 (0x20000-0x21000-0x120000)

I see this error every once in a while and most of the time it doesn't
seem to affect the working of the program. Does it affect the working
of your program in this particular case?
> If I remove the "std::unordered_map<int, std::string> y" from the custom lib it runs normally.
>
> I suspect that wine uses too much of the stack to construct the object, but it's just a wild guess.
>
> Does anybody know what the issue could be?
> Is it possible to increase the stack size?
>
> Thanks.