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| author | Miles Bader <miles@gnu.org> | 1996-04-06 01:51:07 +0000 |
|---|---|---|
| committer | Miles Bader <miles@gnu.org> | 1996-04-06 01:51:07 +0000 |
| commit | 786db2208ef0e9eae365c56764f3050b73e23e56 (patch) | |
| tree | ef1864a486bf0b5752abfa0166fdd8a9d8a2e076 /sysdeps/mach | |
| parent | aa0e1b599cc4d836067fb1157ee16315f2f62439 (diff) | |
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*** empty log message ***
Fri Apr 5 17:43:41 1996 Miles Bader <miles@gnu.ai.mit.edu>
* sysdeps/mach/hurd/i386/sigreturn.c (__sigreturn): Store
MACH_PORT_DEAD in the thread reply-port variable before destroying
the signal handler's reply port to avoid infinite recursion.
* sysdeps/mach/hurd/mig-reply.c (__mig_dealloc_reply_port): Only
attempt to destroy PORT if it's a valid port name.
Diffstat (limited to 'sysdeps/mach')
| -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) |