1 files changed, 18 insertions, 0 deletions
diff --git a/gcc/testsuite/gdc.test/compilable/must_use_opunary.d b/gcc/testsuite/gdc.test/compilable/must_use_opunary.d
new file mode 100644
index 00000000000..fc9650ebed5
--- /dev/null
+++ b/gcc/testsuite/gdc.test/compilable/must_use_opunary.d
@@ -0,0 +1,18 @@
+import core.attribute;
+
+@mustuse struct S
+{
+    ref S opUnary(string op)() return
+    {
+        return this;
+    }
+}
+
+void test()
+{
+    S s;
+    ++s;
+    --s;
+    s++;
+    s--;
+}