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[pushed] Fix gdbserver_reconnect_p handling


Commit 6423214f (testsuite: Don't use expect_background to reap
gdbserver) broke a couple tests that set gdbserver_reconnect_p and
restart gdb before reconnecting, because a gdb_exit (e.g., through
clean_restart) exits gdbserver unconditionally.

Fixes, with --target_board=native-gdbserver:

 -FAIL: gdb.trace/mi-tracepoint-changed.exp: reconnect: break-info 1
 +PASS: gdb.trace/mi-tracepoint-changed.exp: reconnect: tracepoint created
 +PASS: gdb.trace/mi-tracepoint-changed.exp: reconnect: tracepoint on marker is installed
 +PASS: gdb.trace/mi-tracepoint-changed.exp: reconnect: break-info 1

 -FAIL: gdb.trace/mi-tsv-changed.exp: upload: tsv1 created
 -FAIL: gdb.trace/mi-tsv-changed.exp: upload: tsv2 created
 +PASS: gdb.trace/mi-tsv-changed.exp: upload: tsv1 created
 +PASS: gdb.trace/mi-tsv-changed.exp: upload: tsv2 created

gdb/testsuite/
2015-04-16  Pedro Alves  <palves@redhat.com>

	* lib/gdbserver-support.exp (gdb_exit): If gdbserver_reconnect_p
	is set, don't exit gdbserver.
---
 gdb/testsuite/ChangeLog                 | 5 +++++
 gdb/testsuite/lib/gdbserver-support.exp | 8 ++++++++
 2 files changed, 13 insertions(+)

diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 0f2d552..7739325 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2015-04-16  Pedro Alves  <palves@redhat.com>
+
+	* lib/gdbserver-support.exp (gdb_exit): If gdbserver_reconnect_p
+	is set, don't exit gdbserver.
+
 2015-04-16  Andreas Arnez  <arnez@linux.vnet.ibm.com>
 
 	* gdb.arch/s390-vregs.S (change_vrs): Replace exrl by an
diff --git a/gdb/testsuite/lib/gdbserver-support.exp b/gdb/testsuite/lib/gdbserver-support.exp
index b3140c2..6c3401c 100644
--- a/gdb/testsuite/lib/gdbserver-support.exp
+++ b/gdb/testsuite/lib/gdbserver-support.exp
@@ -351,6 +351,14 @@ if { [info procs gdbserver_gdb_exit] == "" } {
 proc gdb_exit {} {
     global gdb_spawn_id server_spawn_id inferior_spawn_id
     global gdb_prompt
+    global gdbserver_reconnect_p
+
+    # Leave GDBserver running if we're exiting GDB in order to
+    # reconnect to the same instance of GDBserver again.
+    if {[info exists gdbserver_reconnect_p] && $gdbserver_reconnect_p} {
+	gdbserver_orig_gdb_exit
+	return
+    }
 
     if {[info exists gdb_spawn_id] && [info exists server_spawn_id]} {
 	# GDB may be terminated in an expected way or an unexpected way,
-- 
1.9.3


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