[Bug gdb/24069] gdb on OSX Mojave hangs in darwin_decode_message

[siwei.he at mail dot utoronto.ca]

https://sourceware.org/bugzilla/show_bug.cgi?id=24069

--- Comment #40 from Louis He <siwei.he at mail dot utoronto.ca> ---
Comment on attachment 13951
  --> https://sourceware.org/bugzilla/attachment.cgi?id=13951
The patch for PR-24069

>From 951136540042788b78ef4aec8895a889a3b083f1 Mon Sep 17 00:00:00 2001
From: Louis-He <1726110778@qq.com>
Date: Wed, 2 Feb 2022 14:51:43 -0500
Subject: [PATCH] gdb: A potential fix for PR-24069

After this fix, the possibility of successful run on mac os increases. However,
it is still possible that the gdb hangs. A workaround is issue "control+c" and
the gdb will continue running as expected. The root cause of the bug hasn't
been identified, and this fix is a temporary patch to PR-24069.
---
 gdb/darwin-nat.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/gdb/darwin-nat.c b/gdb/darwin-nat.c
index d96ce1a6c65..844dbf499fe 100644
--- a/gdb/darwin-nat.c
+++ b/gdb/darwin-nat.c
@@ -1102,8 +1102,17 @@ darwin_nat_target::decode_message (mach_msg_header_t
*hdr,
                  status->set_ignore ();
                  return minus_one_ptid;
                }
+
              if (WIFEXITED (wstatus))
-               status->set_exited (WEXITSTATUS (wstatus));
+               {
+                 status->set_exited (WEXITSTATUS (wstatus));
+               }
+             else if (WIFSTOPPED (wstatus))
+               {
+                 status->set_ignore ();
+                 inferior_debug (4, _("darwin_wait: pid %d received
WIFSTOPPED\n"), res_pid);
+                 return minus_one_ptid;
+               }
              else
                {
                  status->set_signalled
-- 
2.32.0 (Apple Git-132)

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