diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 0164558d07d..23a41d4bd7c 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2018-08-30  Andrew Burgess  <andrew.burgess@embecosm.com>
+
+	* gdb.base/funcargs.c (use_a): New function.
+	(recurse): Call use_a.
+
 2018-08-29  Keith Seitz  <keiths@redhat.com>
 
 	* gdb.compile/compile-cplus-anonymous.cc: New file.
diff --git a/gdb/testsuite/gdb.base/funcargs.c b/gdb/testsuite/gdb.base/funcargs.c
index 600792f0a7e..d5ff19218c6 100644
--- a/gdb/testsuite/gdb.base/funcargs.c
+++ b/gdb/testsuite/gdb.base/funcargs.c
@@ -424,6 +424,12 @@ void hitbottom ()
 {
 }
 
+void use_a (SVAL a)
+{
+  /* Trick the compiler into thinking A is important.  */
+  volatile SVAL dummy = a;
+}
+
 void recurse (SVAL a, int depth)
 {
   a.s = a.i = a.l = --depth;
@@ -431,6 +437,9 @@ void recurse (SVAL a, int depth)
     hitbottom ();
   else
     recurse (a, depth);
+
+  /* Ensure A is not discarded after the above calls.  */
+  use_a (a);
 }
 
 void test_struct_args ()