1 files changed, 26 insertions, 0 deletions
diff --git a/test/SemaCXX/warn-unused-label-error.cpp b/test/SemaCXX/warn-unused-label-error.cpp
new file mode 100644
index 0000000000000..66b616f3cf284
--- /dev/null
+++ b/test/SemaCXX/warn-unused-label-error.cpp
@@ -0,0 +1,26 @@
+// RUN: %clang_cc1 -fsyntax-only -Wunused-variable -Wunused-label -verify %s
+
+static int unused_local_static;
+
+namespace PR8455 {
+  void f() {
+    A: // expected-warning {{unused label 'A'}}
+      __attribute__((unused)) int i; // attribute applies to variable
+    B: // attribute applies to label
+      __attribute__((unused)); int j; // expected-warning {{unused variable 'j'}}
+  }
+
+  void g() {
+    C: // unused label 'C' will not appear here because an error has occurred
+      __attribute__((unused))
+      #pragma weak unused_local_static  // expected-error {{expected ';' after __attribute__}}
+      ;
+  }
+
+  void h() {
+    D: // expected-warning {{unused label 'D'}}
+      #pragma weak unused_local_static
+      __attribute__((unused))  // expected-warning {{declaration does not declare anything}}
+      ;
+  }
+}