GC issue? List.pool overwritten by allocated object

[Denis Feklushkin]

On Wednesday, 14 May 2025 at 09:11:13 UTC, Denis Feklushkin wrote:

> Okay, I think the question can be considered closed


However, I am still on this issue! :(
```
ERROR: AddressSanitizer: SEGV on unknown address 0x000100000006
```
I tried all 4 available TLS models: global-dynamic, 
local-dynamic, initial-exec,  local-exec. But I didn't build 
druntime with these models - only resulting binary.

Valgring says that memory block, returned by malloc(), has never 
been allocated dynamically:
```
$ valgrind --tool=memcheck ./pukan
[...]
==1218062==  Address 0x100000006 is not stack'd, malloc'd or 
(recently) free'd
```

`$fs_base` (a-la TLS pointer reported by GDB) is 
0x00007ffff7a50b40. And all other allocated and used values of my 
D code are lying nearby this value.

I also found that the problem with access to the 0x100000006 
pointer is quite common. And, it seems, always threads-related:

https://bbs.archlinux.org/viewtopic.php?id=210363 - here I 
couldn't track how they solved the problem
https://github.com/gluster/glusterfs/issues/2971 - crashed while 
`ltcmalloc` library init/fini related functions are called in two 
different threads during a library loaded/unloaded.The process is 
getting crashed during access of tls variables in heap profiler 
api

Adding fuel to the fire is the fact that the same `vulkan` 
library works for me without (any known) problems [in Danny 
Arends project](https://github.com/DannyArends/DImGui), which 
uses SDL2 instead of glfw. Loading the `vulkan` library itself 
happens by the same way in both projects - linking during the 
build process.