diff options
Diffstat (limited to 'sysdeps/mach/hurd/i386/sigreturn.c')
| -rw-r--r-- | sysdeps/mach/hurd/i386/sigreturn.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/sysdeps/mach/hurd/i386/sigreturn.c b/sysdeps/mach/hurd/i386/sigreturn.c index 0e5ccfc9f5..d47b863fe1 100644 --- a/sysdeps/mach/hurd/i386/sigreturn.c +++ b/sysdeps/mach/hurd/i386/sigreturn.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1991, 1992, 1994, 1995 Free Software Foundation, Inc. +/* Copyright (C) 1991, 1992, 1994, 1995, 1996 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -80,7 +80,17 @@ __sigreturn (struct sigcontext *scp) reply_port = (mach_port_t *) __hurd_threadvar_location (_HURD_THREADVAR_MIG_REPLY); if (*reply_port) - __mach_port_destroy (__mach_task_self (), *reply_port); + { + mach_port_t port = *reply_port; + + /* Assigning MACH_PORT_DEAD here tells libc's mig_get_reply_port not to + get another reply port, but avoids mig_dealloc_reply_port trying to + deallocate it after the receive fails (which it will, because the + reply port will be bogus, whether we do this or not). */ + *reply_port = MACH_PORT_DEAD; + + __mach_port_destroy (__mach_task_self (), port); + } *reply_port = scp->sc_reply_port; if (scp->sc_fpused) |