[PATCH v3 4/5] btrace, testsuite: fix extended-remote non-stop test

[Markus Metzger <markus.t.metzger@intel.com>]

With --target_board=native-extended-gdbserver non-stop tests are failing with

    UNTESTED: gdb.btrace/non-stop.exp: failed to run to main

Fix that by adding '-ex "set non-stop on"' to GDBFLAGS before restarting.

2017-01-30  Markus Metzger  <markus.t.metzger@intel.com>

testsuite/
	* gdb.btrace/non-stop.exp: Add '-ex "set non-stop on"' to GDBFLAGS.
---
 gdb/testsuite/gdb.btrace/non-stop.exp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/gdb/testsuite/gdb.btrace/non-stop.exp b/gdb/testsuite/gdb.btrace/non-stop.exp
index cda15e2..a671b9c 100644
--- a/gdb/testsuite/gdb.btrace/non-stop.exp
+++ b/gdb/testsuite/gdb.btrace/non-stop.exp
@@ -25,9 +25,11 @@ if {[gdb_compile_pthreads "$srcdir/$subdir/$srcfile" "$binfile" executable {debu
     untested "failed to prepare"
     return -1
 }
-clean_restart $testfile
 
-gdb_test_no_output "set non-stop on"
+save_vars { GDBFLAGS } {
+    append GDBFLAGS " -ex \"set non-stop on\""
+    clean_restart $testfile
+}
 
 if ![runto_main] {
     untested "failed to run to main"
-- 
1.8.3.1