Fix horrific CFG bug where '@autoreleasepool' would be put in a dangling block in the CFG.

llvm-svn: 152163

1 files changed, 17 insertions, 0 deletions

diff --git a/clang/test/SemaObjC/warn-unreachable.m b/clang/test/SemaObjC/warn-unreachable.m
new file mode 100644
index 00000000000..832cbd23d27
--- /dev/null
+++ b/clang/test/SemaObjC/warn-unreachable.m
@@ -0,0 +1,17 @@
+// RUN: %clang %s -fsyntax-only -Xclang -verify -fblocks -Wunreachable-code -Wno-unused-value -Wno-covered-switch-default
+
+// This previously triggered a warning from -Wunreachable-code because of
+// a busted CFG.
+typedef signed char BOOL;
+BOOL radar10989084() {
+  @autoreleasepool {  // no-warning
+    return __objc_yes;
+  }
+}
+
+// Test the warning works.
+void test_unreachable() {
+  return;
+  return; // expected-warning {{will never be executed}}
+}
+