Issue with `gettid` in macOS

### Setup - MacOS Sequoia 15.3 - NVIM v0.10.4 - Build type: Release - LuaJIT 2.1.1736781742 ### Summary When I start neovim with `NVIM_PROFILE=1`, there's a long trace with basically this piece of information: ``` Error executing lua callback: ....local/share/nvim/lazy/profile.nvim/lua/profile/util.lua:33: dlsym(RTLD_DEFAULT, gettid): symbol not found ``` Here we can see the failing call. https://github.com/stevearc/profile.nvim/blob/f2d2cf5eae9ba3b9ca6bc148507d153f3e6ae282/lua/profile/util.lua#L33 ### Workaround In case there's someone else with the same problem reading this, I was able to fix this by creating a `gettid.c` file with the following contents: ```c #include <sys/types.h> #include <pthread.h> #include <stdint.h> pid_t gettid(void) { uint64_t tid; pthread_threadid_np(NULL, &tid); return (pid_t)tid; } ``` Compiling it with ```bash gcc -shared -fPIC gettid.c -o libgettid.so ``` And using it like: ```bash DYLD_INSERT_LIBRARIES=$PWD/libgettid.so NVIM_PROFILE=1 nvim ``` This is not a permanent solution, that's why I haven't submitted a PR for this issue. I've been trying different solutions in `util.lua` using `vim.loop.getpid()` and `pthread_self`, but I haven't found a definitive solution so far.