gh-125161: return non zero value in pthread_self on wasi (#125303)

diff --git a/Python/thread_pthread_stubs.h b/Python/thread_pthread_stubs.h
index 4741e594e52e656c4280a56646da04c6fd342328..458f8fc5951720fb947385a6d57e09a8518332d5 100644 (file)
--- a/Python/thread_pthread_stubs.h
+++ b/Python/thread_pthread_stubs.h
@@ -1,5 +1,9 @@
 #include "cpython/pthread_stubs.h"
 
+typedef struct py_stub_tls_entry py_tls_entry;
+
+#define py_tls_entries (_PyRuntime.threads.stubs.tls_entries)
+
 // mutex
 int
 pthread_mutex_init(pthread_mutex_t *restrict mutex,
@@ -105,7 +109,7 @@ pthread_join(pthread_t thread, void** value_ptr)
 
 PyAPI_FUNC(pthread_t) pthread_self(void)
 {
-    return 0;
+    return (pthread_t)(uintptr_t)&py_tls_entries;
 }
 
 int
@@ -134,10 +138,6 @@ pthread_attr_destroy(pthread_attr_t *attr)
 }
 
 
-typedef struct py_stub_tls_entry py_tls_entry;
-
-#define py_tls_entries (_PyRuntime.threads.stubs.tls_entries)
-
 int
 pthread_key_create(pthread_key_t *key, void (*destr_function)(void *))
 {