From FEDORA_PATCHES Mon Sep 17 00:00:00 2001

From: Fedora GDB patches <invalid@email.com>

Date: Fri, 27 Oct 2017 21:07:50 +0200

Subject: gdb-6.8-quit-never-aborts.patch

;; Make the GDB quit processing non-abortable to cleanup everything properly.

;;=fedora: It was useful only after gdb-6.8-attach-signalled-detach-stopped.patch .

We may abort the process of detaching threads with multiple SIGINTs - which are

being sent during a testcase terminating its child GDB.

Some of the threads may not be properly PTRACE_DETACHed which hurts if they

should have been detached with SIGSTOP (as they are accidentally left running

on the debugger termination).

diff --git a/gdb/defs.h b/gdb/defs.h

--- a/gdb/defs.h

+++ b/gdb/defs.h

@@ -168,6 +168,10 @@ extern void default_quit_handler (void);

 /* Flag that function quit should call quit_force.  */

 extern volatile int sync_quit_force_run;

+#ifdef NEED_DETACH_SIGSTOP

+extern int quit_flag_cleanup;

+#endif

+

 extern void quit (void);

 /* Helper for the QUIT macro.  */

diff --git a/gdb/extension.c b/gdb/extension.c

--- a/gdb/extension.c

+++ b/gdb/extension.c

@@ -823,6 +823,11 @@ check_quit_flag (void)

   int i, result = 0;

   const struct extension_language_defn *extlang;

+#ifdef NEED_DETACH_SIGSTOP

+  if (quit_flag_cleanup)

+    return 0;

+#endif

+

   ALL_ENABLED_EXTENSION_LANGUAGES (i, extlang)

     {

       if (extlang->ops->check_quit_flag != NULL)

diff --git a/gdb/top.c b/gdb/top.c

--- a/gdb/top.c

+++ b/gdb/top.c

@@ -1703,7 +1703,13 @@ quit_force (int *exit_arg, int from_tty)

   qt.from_tty = from_tty;

+#ifndef NEED_DETACH_SIGSTOP

   /* We want to handle any quit errors and exit regardless.  */

+#else

+  /* We want to handle any quit errors and exit regardless but we should never

+     get user-interrupted to properly detach the inferior.  */

+  quit_flag_cleanup = 1;

+#endif

   /* Get out of tfind mode, and kill or detach all inferiors.  */

   try

diff --git a/gdb/utils.c b/gdb/utils.c

--- a/gdb/utils.c

+++ b/gdb/utils.c

@@ -102,6 +102,13 @@ static std::chrono::steady_clock::duration prompt_for_continue_wait_time;

 static bool debug_timestamp = false;

+#ifdef NEED_DETACH_SIGSTOP

+/* Nonzero means we are already processing the quitting cleanups and we should

+   no longer get aborted.  */

+

+int quit_flag_cleanup;

+#endif

+

 /* True means that strings with character values >0x7F should be printed

    as octal escapes.  False means just print the value (e.g. it's an

    international character, and the terminal or window can cope.)  */