366    volatile Word* xargs = (volatile Word*) xargsV;  in mythread_wrapper()  local
367    void*(*fn)(void*) = (void*(*)(void*))xargs[0];  in mythread_wrapper()
368    void* arg         = (void*)xargs[1];  in mythread_wrapper()
374       hence deallocate xargs[] while we still need it, and (2) we  in mythread_wrapper()
381       disables checking on xargs[] before creating the child and  in mythread_wrapper()
387    xargs[2] = 0;  in mythread_wrapper()
388    /* Now we can no longer safely use xargs[]. */  in mythread_wrapper()
407    volatile Word xargs[3];  in pthread_create_WRK()  local
413    xargs[0] = (Word)start;  in pthread_create_WRK()
414    xargs[1] = (Word)arg;  in pthread_create_WRK()
415    xargs[2] = 1; /* serves as a spinlock -- sigh */  in pthread_create_WRK()
423    VALGRIND_HG_DISABLE_CHECKING(&xargs, sizeof(xargs));  in pthread_create_WRK()
427    CALL_FN_W_WWWW(ret, fn, thread,attr,mythread_wrapper,&xargs[0]);  in pthread_create_WRK()
434       while (xargs[2] != 0) {  in pthread_create_WRK()
436             xargs[2].  However, that can lead to starvation in the  in pthread_create_WRK()
449    VALGRIND_HG_ENABLE_CHECKING(&xargs, sizeof(xargs));  in pthread_create_WRK()
495    volatile Word xargs[3];  in thr_create_WRK()  local
501    xargs[0] = (Word)start;  in thr_create_WRK()
502    xargs[1] = (Word)arg;  in thr_create_WRK()
503    xargs[2] = 1; /* serves as a spinlock -- sigh */  in thr_create_WRK()
505    VALGRIND_HG_DISABLE_CHECKING(&xargs, sizeof(xargs));  in thr_create_WRK()
515       while (xargs[2] != 0) {  in thr_create_WRK()
523    VALGRIND_HG_ENABLE_CHECKING(&xargs, sizeof(xargs));  in thr_create_WRK()