Tweak -Wuninitialized-experimental to not emit

a warning for uses of an uninitialized variable
when the use is a void cast, e.g. (void) x.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124278 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 11 insertions, 0 deletions

diff --git a/test/Sema/uninit-variables.c b/test/Sema/uninit-variables.c
index 200fc83b10..1bcfc8ad64 100644
--- a/test/Sema/uninit-variables.c
+++ b/test/Sema/uninit-variables.c
@@ -212,3 +212,14 @@ void test32() {
   (void) ^{ (void) test32_x; }; // no-warning
 }
 
+void test_33() {
+  int x; // no-warning
+  (void) x;
+}
+
+int test_34() {
+  int x; // expected-warning{{use of uninitialized variable 'x'}} expected-note{{add initialization to silence this warning}}
+  (void) x;
+  return x; // expected-note{{variable 'x' is possibly uninitialized when used here}}
+}
+