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Hi! If a linuxthreads programs is spawned from a threaded NPTL program (such as gnome-terminal, konsole etc.), bad things happen as since 2003-03-25 NPTL blocks __SIGRTMIN+1, so all LT threads but the manager (which does SIG_SETMASK at the very end) never receive __pthread_sig_cancel. 2003-04-03 Jakub Jelinek <jakub at redhat dot com> * pthread.c (pthread_initialize): Unblock __pthread_sig_cancel in case the parent blocked it. --- linuxthreads/pthread.c.jj 2003-04-03 07:16:43.000000000 -0500 +++ linuxthreads/pthread.c 2003-04-03 08:38:29.000000000 -0500 @@ -550,6 +550,10 @@ static void pthread_initialize(void) sigemptyset(&mask); sigaddset(&mask, __pthread_sig_restart); sigprocmask(SIG_BLOCK, &mask, NULL); + /* And unblock __pthread_sig_cancel if it has been blocked. */ + sigdelset(&mask, __pthread_sig_restart); + sigaddset(&mask, __pthread_sig_cancel); + sigprocmask(SIG_UNBLOCK, &mask, NULL); /* Register an exit function to kill all other threads. */ /* Do it early so that user-registered atexit functions are called before pthread_*exit_process. */ Jakub
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