c++: Add test for fixed PR [PR101592]

Fixed by my c++/99701 patch.

	PR c++/101592

gcc/testsuite/ChangeLog:

	* g++.dg/warn/Wlogical-op-3.C: New test.

diff --git a/gcc/testsuite/g++.dg/warn/Wlogical-op-3.C b/gcc/testsuite/g++.dg/warn/Wlogical-op-3.C
new file mode 100644 (file)
index 0000000..50b09d5
--- /dev/null
+++ b/gcc/testsuite/g++.dg/warn/Wlogical-op-3.C
@@ -0,0 +1,12 @@
+// PR c++/101592
+// { dg-do compile { target c++11 } }
+// { dg-options "-O2 -Wlogical-op" }
+
+decltype(nullptr) foo ();
+
+bool
+bar ()
+{
+  return foo () > nullptr // { dg-error "ordered comparison" }
+    || foo () < nullptr; // { dg-error "ordered comparison" }
+}