From 222e2a7620e6520ffaf4fc4e69d79c18da31542e Mon Sep 17 00:00:00 2001
From: "Zancanaro; Carlo" <czan8762@plang3.cs.usyd.edu.au>
Date: Mon, 24 Sep 2012 09:58:17 +1000
Subject: Add the clang library to the repo (with some of my changes, too).

---
 clang/test/SemaCXX/warn-unused-result.cpp | 44 +++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 clang/test/SemaCXX/warn-unused-result.cpp

(limited to 'clang/test/SemaCXX/warn-unused-result.cpp')

diff --git a/clang/test/SemaCXX/warn-unused-result.cpp b/clang/test/SemaCXX/warn-unused-result.cpp
new file mode 100644
index 0000000..d14fdf9
--- /dev/null
+++ b/clang/test/SemaCXX/warn-unused-result.cpp
@@ -0,0 +1,44 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+
+int f() __attribute__((warn_unused_result));
+
+struct S {
+  void t() const;
+};
+S g1() __attribute__((warn_unused_result));
+S *g2() __attribute__((warn_unused_result));
+S &g3() __attribute__((warn_unused_result));
+
+void test() {
+  f(); // expected-warning {{ignoring return value}}
+  g1(); // expected-warning {{ignoring return value}}
+  g2(); // expected-warning {{ignoring return value}}
+  g3(); // expected-warning {{ignoring return value}}
+
+  (void)f();
+  (void)g1();
+  (void)g2();
+  (void)g3();
+
+  if (f() == 0) return;
+
+  g1().t();
+  g2()->t();
+  g3().t();
+
+  int i = f();
+  S s1 = g1();
+  S *s2 = g2();
+  S &s3 = g3();
+  const S &s4 = g1();
+}
+
+struct X {
+ int foo() __attribute__((warn_unused_result));
+};
+
+void bah() {
+  X x, *x2;
+  x.foo(); // expected-warning {{ignoring return value}}
+  x2->foo(); // expected-warning {{ignoring return value}}
+}
-- 
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