commit 803292c631c8e80a0596a011a901e72c8e0e0edc
from: rsc <devnull@localhost>
date: Tue Jan 18 20:53:12 2005 UTC

proccreate race

commit - 1c8159def559fc9bcf5070d90901c84f996ab59a
commit + 803292c631c8e80a0596a011a901e72c8e0e0edc
blob - b154ce6e0530e2b5c2592c483d11e1f5add92d27
blob + ff22bbaa89a940009c4b32ff8d61363e8a8ba698
--- src/libthread/thread.c
+++ src/libthread/thread.c
@@ -171,13 +171,15 @@ threadcreate(void (*fn)(void*), void *arg, uint stack)
 int
 proccreate(void (*fn)(void*), void *arg, uint stack)
 {
+	int id;
 	_Thread *t;
 	Proc *p;
 
 	p = procalloc();
 	t = _threadcreate(p, fn, arg, stack);
+	id = t->id;	/* t might be freed after _procstart */
 	_procstart(p, scheduler);
-	return t->id;
+	return id;
 }
 
 void