Always zero all elements of siginfo_t throughout.

* cygtls.h (_cygtls::thread_context): Declare new field.
(_cygtls::thread_id): Ditto.
(_cygtls::signal_exit): Move into this class.
(_cygtls::copy_context): Declare new function.
(_cygtls::signal_debugger): Ditto.
* cygtls.cc (_cygtls::init_thread): Fill out thread id field.
* exceptions.cc (exception): Change message when exception info is unknown.
Copy context to thread local storage.
(_cygtls::handle_exceptions): Avoid double test for fault_guarded.  Reflect
move of signal_exit to _cygtls class.
(sigpacket::process): Copy context to thread local storage.
(_cygtls::signal_exit): Move to _cygtls class.  Call signal_debugger to notify
debugger of exiting signal (WIP).  Call stackdump here (WIP).
(_cygtls::copy_context): Define new function.
(_cygtls::signal_debugger): Ditto.
* tlsoffsets.h: Regenerate.
* include/cygwin.h (_fpstate): New internal structure.
(ucontext): Declare new structure (WIP).
(__COPY_CONTEXT_SIZE): New define.
* exceptions.cc (_cygtls::interrupt_setup): Clear "threadkill" field when there
is no sigwaiting thread.
(setup_handler): Move event handling into interrupt_setup.

1 files changed, 1 insertions, 2 deletions

diff --git a/winsup/cygwin/thread.cc b/winsup/cygwin/thread.cc
index 8ad16c3c8..d7b2a1fa2 100644
--- a/winsup/cygwin/thread.cc
+++ b/winsup/cygwin/thread.cc
@@ -2870,12 +2870,11 @@ pthread_kill (pthread_t thread, int sig)
   if (!pthread::is_good_object (&thread))
     return EINVAL;
 
-  siginfo_t si;
+  siginfo_t si = {0};
   si.si_signo = sig;
   si.si_code = SI_USER;
   si.si_pid = myself->pid;
   si.si_uid = myself->uid;
-  si.si_errno = 0;
   thread->cygtls->set_threadkill ();
   int rval = sig ? sig_send (NULL, si, thread->cygtls) : 0;