1 files changed, 15 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/Wcxx-compat-18.c b/gcc/testsuite/gcc.dg/Wcxx-compat-18.c
new file mode 100644
index 000000000..9ae2d770a
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/Wcxx-compat-18.c
@@ -0,0 +1,15 @@
+/* { dg-do compile } */
+/* { dg-options "-Wc++-compat" } */
+enum E1 { A };
+enum E2 { B };
+int
+f1 (int i)
+{
+  return (int) (i ? A : B);	/* { dg-warning "invalid in C\[+\]\[+\]" } */
+}
+extern enum E1 f2();
+int
+f3 (int i)
+{
+  return (int) (i ? f2 () : B);	/* { dg-warning "invalid in C\[+\]\[+\]" } */
+}