1 files changed, 38 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/warn/Wunused-9.C b/gcc/testsuite/g++.dg/warn/Wunused-9.C
new file mode 100644
index 000000000..869888955
--- /dev/null
+++ b/gcc/testsuite/g++.dg/warn/Wunused-9.C
@@ -0,0 +1,38 @@
+// PR c++/11224
+// { dg-options "-Wunused" }
+
+struct someclass {
+
+  bool isEmpty() const { return true; }
+};
+
+int main()
+{
+  bool bOk = false;
+  someclass foo;
+
+  bOk == foo.isEmpty(); // { dg-warning "not used" }
+
+  return bOk;
+}
+
+int& f();
+
+void g() {
+  f() == 0; // { dg-warning "not used" }
+  f() != 1; // { dg-warning "not used" }
+  f() < 2; // { dg-warning "not used" }
+  f() > 3; // { dg-warning "not used" }
+  f() <= 4; // { dg-warning "not used" }
+  f() >= 5; // { dg-warning "not used" }
+  f() + 6; // { dg-warning "not used" }
+  f() - 7; // { dg-warning "not used" }
+  f() * 8; // { dg-warning "not used" }
+  f() / 9; // { dg-warning "not used" }
+  +f(); // { dg-warning "not used" }
+  -f(); // { dg-warning "not used" }
+  ++f();
+  --f();
+  f() = 10;
+  f() <<= 11; 
+}