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/Preprocessor/expr_liveness.c | 52 +++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 clang/test/Preprocessor/expr_liveness.c

(limited to 'clang/test/Preprocessor/expr_liveness.c')

diff --git a/clang/test/Preprocessor/expr_liveness.c b/clang/test/Preprocessor/expr_liveness.c
new file mode 100644
index 0000000..c3b6421
--- /dev/null
+++ b/clang/test/Preprocessor/expr_liveness.c
@@ -0,0 +1,52 @@
+/* RUN: %clang_cc1 -E %s -DNO_ERRORS -Werror -Wundef
+   RUN: not %clang_cc1 -E %s
+ */
+
+#ifdef NO_ERRORS
+/* None of these divisions by zero are in live parts of the expression, do not
+   emit any diagnostics. */
+
+#define MACRO_0 0
+#define MACRO_1 1
+
+#if MACRO_0 && 10 / MACRO_0
+foo
+#endif
+
+#if MACRO_1 || 10 / MACRO_0
+bar
+#endif
+
+#if 0 ? 124/0 : 42
+#endif
+
+// PR2279
+#if 0 ? 1/0: 2
+#else
+#error
+#endif
+
+// PR2279
+#if 1 ? 2 ? 3 : 4 : 5
+#endif
+
+// PR2284
+#if 1 ? 0: 1 ? 1/0: 1/0
+#endif
+
+#else
+
+
+/* The 1/0 is live, it should error out. */
+#if 0 && 1 ? 4 : 1 / 0
+baz
+#endif
+
+
+#endif
+
+// rdar://6505352
+// -Wundef should not warn about use of undefined identifier if not live.
+#if (!defined(XXX) || XXX > 42)
+#endif
+
-- 
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