Bug report

Bug description:

The following assert fails under a debug build with WASI:

It's probably due to the pthread stubs always returning 0 as the thread ID:

It can probably be solved by making the assertion conditional on `HAVE_PTHREAD_STUBS not being defined:

CPython versions tested on:

CPython main branch

Operating systems tested on:

Other

Linked PRs

• GH-110455: Guard assert(tstate->thread_id > 0) with #ifndef HAVE_PTHREAD_STUBS #110487
• [3.12] GH-110455: Guard assert(tstate->thread_id > 0) with GH-ifndef HAVE_PTHREAD_STUBS (GH-110487) #110491