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From: "vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/26614] New: UNRESOLVED: gdb.multi/multi-target.exp:
 continue: non-stop=on: inferior 5
Date: Mon, 14 Sep 2020 14:50:37 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D26614

            Bug ID: 26614
           Summary: UNRESOLVED: gdb.multi/multi-target.exp: continue:
                    non-stop=3Don: inferior 5
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gdb
          Assignee: unassigned at sourceware dot org
          Reporter: vries at gcc dot gnu.org
  Target Milestone: ---

[ On x86_64 laptop, with openSUSE Leap 15.2. ]

With this patch (not sure yet whether it's relevant) in place:
...
diff --git a/gdb/testsuite/lib/gdbserver-support.exp
b/gdb/testsuite/lib/gdbserver-support.
exp
index a2cc80f28d..7b9c0eef6e 100644
--- a/gdb/testsuite/lib/gdbserver-support.exp
+++ b/gdb/testsuite/lib/gdbserver-support.exp
@@ -451,8 +451,10 @@ proc gdbserver_exit { is_mi } {
            # We use expect rather than gdb_expect because
            # we want to suppress printing exception messages, otherwise,
            # remote_expect, invoked by gdb_expect, prints the exceptions.
+           set read_prompt 0
            expect {
                -i "$gdb_spawn_id" -re "$gdb_prompt $" {
+                   set read_prompt 1
                    exp_continue
                }
                -i "$server_spawn_id" eof {
@@ -463,6 +465,7 @@ proc gdbserver_exit { is_mi } {
                    warning "Timed out waiting for EOF in server after
$monitor_exit"
                }
            }
+           gdb_assert {$read_prompt}
        }
     }
     close_gdbserver
...
and running in parallel with:
...
$ stress -c 5
...
I ran into:
...
(gdb) PASS: gdb.multi/multi-target.exp: continue: non-stop=3Don: inferior 2
Remote debugging from host ::1, port 34088^M
Process build/gdb/testsuite/outputs/gdb.multi/multi-target/multi-target
created; pid =3D 8649^M
monitor exit^M
(gdb) Killing process(es): 8649^M
PASS: gdb.multi/multi-target.exp: continue: non-stop=3Don: $read_prompt
ERROR: GDB process no longer exists
GDB process exited with wait status 8627 exp14 0 0 CHILDKILLED SIGABRT SIGA=
BRT
UNRESOLVED: gdb.multi/multi-target.exp: continue: non-stop=3Don: inferior 5
...

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