* dcrt0.cc (jit_debug): New global.

(initial_env): Set jit_debug when we are automatically starting a gdb process.
* dtable.cc (dtable::get_debugger_info): Don't tty tricks when we are being
debugged by our own captive gdb, as determined by jit_debug == true.
(dtable::init_std_file_from_handle): Detect errors when initializing a tty
early rather than at random points later.
* fhandler.h (fhandler_*::init): Return int to indicate success/failure.
* fhandler.cc (fhandler_base::init): Reflect change in return value.
* pipe.cc (fhandler_pipe::init): Ditto.
(fhandler_pipe::create_selectable): Don't say we're retrying when we aren't.
* fhandler_console.cc (fhandler_console::init): Ditto.  Return success/failure.
* fhandler_serial.cc (fhandler_serial::init): Ditto.
* fhandler_tty.cc (fhandler_tty_slave::init): Ditto.
(fhandler_tty_slave::open): Make debugging output more detailed.
* tty.cc (tty_list::terminate): Don't close I/O handles before all slaves have
checked in.
(tty::slave_alive): Make a non-inlined function.  Check if tty pipe handles can
be created as an additional exists check.
* tty.h (tty::slave_alive): Just define here.

1 files changed, 7 insertions, 4 deletions

diff --git a/winsup/cygwin/dtable.cc b/winsup/cygwin/dtable.cc
index e63a9b5e1..08b04f091 100644
--- a/winsup/cygwin/dtable.cc
+++ b/winsup/cygwin/dtable.cc
@@ -109,7 +109,8 @@ dtable::extend (int howmuch)
 void
 dtable::get_debugger_info ()
 {
-  if (being_debugged ())
+  extern bool jit_debug;
+  if (!jit_debug && being_debugged ())
     {
       char std[3][sizeof ("/dev/ttyNNNN")];
       std[0][0] = std[1][0] = std [2][0] = '\0';
@@ -383,9 +384,11 @@ dtable::init_std_file_from_handle (int fd, HANDLE handle)
 	 This needs further investigation but the workaround not to close
 	 the handles will have a marginal hit of three extra handles per
 	 process at most. */
-      fh->init (dev == FH_CONSOLE && wincap.has_console_handle_problem ()
-      		? INVALID_HANDLE_VALUE : handle, access, bin);
-      set_std_handle (fd);
+      if (fh->init (dev == FH_CONSOLE && wincap.has_console_handle_problem ()
+		     ? INVALID_HANDLE_VALUE : handle, access, bin))
+	set_std_handle (fd);
+      else
+	api_fatal ("couldn't initialize fd %d for %s", fd, fh->get_name ());
       paranoid_printf ("fd %d, handle %p", fd, handle);
     }
 }