1 files changed, 54 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/warn/Wunused-parm-2.C b/gcc/testsuite/g++.dg/warn/Wunused-parm-2.C
new file mode 100644
index 000000000..d4276c0a2
--- /dev/null
+++ b/gcc/testsuite/g++.dg/warn/Wunused-parm-2.C
@@ -0,0 +1,54 @@
+// { dg-do compile }
+// { dg-options "-Wunused -W" }
+
+template <int N>
+long
+f1 (unsigned long long x)
+{
+  unsigned long long a = 1;
+  const union { unsigned long long l; unsigned int p[2]; } b = { x };
+  const union { unsigned long long l; unsigned int p[2]; } c = { a };
+  return b.p[0] + c.p[0];
+}
+
+template <int N>
+int
+f2 (int x, int y)
+{
+  int a = 1;
+  int b[] = { 1, 2, x, a, 3, 4 };
+  return b[y];
+}
+
+template <int N>
+int
+f3 (int a)	// { dg-warning "unused parameter" }
+{
+  return 0;
+}
+
+template <int N>
+int
+f4 (int a)	// { dg-warning "set but not used" }
+{
+  a = 1;
+  return 0;
+}
+
+template <int N>
+int
+f5 (int a)
+{
+  a = 1;
+  return a;
+}
+
+void
+test ()
+{
+  (void) f1<0> (0);
+  (void) f2<0> (0, 0);
+  (void) f3<0> (0);
+  (void) f4<0> (0);
+  (void) f5<0> (0);
+}