Check for readline support in gdb.base/history-duplicates.exp.

2015-12-14  Sandra Loosemore  <sandra@codesourcery.com>

	gdb/testsuite/
	* gdb.base/history-duplicates.exp: Skip if no readline support.

2 files changed, 12 insertions, 1 deletions

diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index b46ccbd..56c3c47 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,5 +1,9 @@
 2015-12-14  Sandra Loosemore  <sandra@codesourcery.com>
 
+	* gdb.base/history-duplicates.exp: Skip if no readline support.
+
+2015-12-14  Sandra Loosemore  <sandra@codesourcery.com>
+
 	* gdb.base/gdbinit-history.exp: Skip for remote-host testing.
 
 2015-12-14  Sandra Loosemore  <sandra@codesourcery.com>
diff --git a/gdb/testsuite/gdb.base/history-duplicates.exp b/gdb/testsuite/gdb.base/history-duplicates.exp
index 11bb1ed..1c3c2c2 100644
--- a/gdb/testsuite/gdb.base/history-duplicates.exp
+++ b/gdb/testsuite/gdb.base/history-duplicates.exp
@@ -51,9 +51,16 @@ proc run_print_on_each_thing { things } {
     }
 }
 
-# By default the option is set to 0.
 gdb_exit
 gdb_start
+
+# These tests require readline support.
+if { ![readline_is_used] } {
+    unsupported "readline isn't used."
+    return -1
+}
+
+# By default the option is set to 0.
 gdb_test "show history remove-duplicates" "is 0\\."
 
 # Test the "unlimited" setting.