gdb/testsuite/

* gdb.base/range-stepping.exp: Skip the rest of tests if the
	test fails.
	* lib/range-stepping-support.exp (exec_cmd_expect_vCont_count):
	Return 0 if the test passes, otherwise return 1.

gdb/testsuite/ChangeLog

@@ -1,3 +1,11 @@
+2013-05-24  Yao Qi  <yao@codesourcery.com>
+	    Pedro Alves  <palves@redhat.com>
+
+	* gdb.base/range-stepping.exp: Skip the rest of tests if the
+	test fails.
+	* lib/range-stepping-support.exp (exec_cmd_expect_vCont_count):
+	Return 0 if the test passes, otherwise return 1.
+
 2013-05-23  Doug Evans  <dje@google.com>
 
 	* boards/fission-dwp.exp: New file.

gdb/testsuite/gdb.base/range-stepping.exp

@@ -76,7 +76,15 @@ with_test_prefix "multi insns" {
     # <-- T05
     # --> vCont;rSTART,END  (range step)
     # <-- T05
-    exec_cmd_expect_vCont_count "next" 1 1
+    set result [exec_cmd_expect_vCont_count "next" 1 1]
+    if { $result } {
+	# This is the first range-stepping test, and the simplest
+	# one.  If it fails, probably the rest of the tests would
+	# fail too, and the huge number of rsp packets in the test
+	# with the time-consuming loop would blow up the gdb.log file.
+	# Skip the rest of the tests.
+	return
+    }
 
     set pc_after_stepping ""
     set msg "pc after stepping"

gdb/testsuite/lib/range-stepping-support.exp

@@ -14,7 +14,8 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 # Execute command CMD and check that GDB sends the expected number of
-# vCont;s and vCont;r packets.
+# vCont;s and vCont;r packets.  Returns 0 if the test passes,
+# otherwise returns 1.
 
 proc exec_cmd_expect_vCont_count { cmd exp_vCont_s exp_vCont_r } {
     global gdb_prompt
@@ -24,6 +25,7 @@ proc exec_cmd_expect_vCont_count { cmd exp_vCont_s exp_vCont_r } {
     set test "${cmd}: vCont;s=${exp_vCont_s} vCont;r=${exp_vCont_r}"
     set r_counter 0
     set s_counter 0
+    set ret 1
     gdb_test_multiple $cmd $test {
 	-re "vCont;s\[^\r\n\]*Packet received: T\[\[:xdigit:\]\]\[\[:xdigit:\]\]" {
 	    incr s_counter
@@ -40,6 +42,7 @@ proc exec_cmd_expect_vCont_count { cmd exp_vCont_s exp_vCont_r } {
 	-re "$gdb_prompt $" {
 	    if { $r_counter == ${exp_vCont_r} && $s_counter == ${exp_vCont_s} } {
 		pass $test
+		set ret 0
 	    } else {
 		fail $test
 	    }
@@ -47,4 +50,5 @@ proc exec_cmd_expect_vCont_count { cmd exp_vCont_s exp_vCont_r } {
     }
 
     gdb_test_no_output "set debug remote 0" ""
+    return $ret
 }