Implement -Wunused-label.

llvm-svn: 114315

2 files changed, 10 insertions, 2 deletions

diff --git a/clang/test/Sema/warn-unused-label.c b/clang/test/Sema/warn-unused-label.c
new file mode 100644
index 00000000000..b5979be264f
--- /dev/null
+++ b/clang/test/Sema/warn-unused-label.c
@@ -0,0 +1,8 @@
+// RUN: %clang_cc1 -fsyntax-only -Wunused-label -verify %s
+
+void f() {
+  a:
+  goto a;
+  b: // expected-warning{{unused}}
+  return;
+}
diff --git a/clang/test/Sema/warn-unused-value.c b/clang/test/Sema/warn-unused-value.c
index 7c36b6983e7..876eb9e4823 100644
--- a/clang/test/Sema/warn-unused-value.c
+++ b/clang/test/Sema/warn-unused-value.c
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -fsyntax-only -verify -Wunused-value %s
+// RUN: %clang_cc1 -fsyntax-only -verify -Wunused-value -Wunused-label %s
 // RUN: %clang_cc1 -fsyntax-only -verify -Wunused %s
 // RUN: %clang_cc1 -fsyntax-only -verify -Wall %s
 
@@ -53,7 +53,7 @@ void pr4806() {
   *pi;              // expected-warning {{expression result unused}}
   *pj;
 
-  foo_label:
+  foo_label:        // expected-warning {{unused label}}
   i;                // expected-warning {{expression result unused}}
 }