Add the clang library to the repo (with some of my changes, too).

1 files changed, 25 insertions, 0 deletions

diff --git a/clang/test/Preprocessor/overflow.c b/clang/test/Preprocessor/overflow.c
new file mode 100644
index 0000000..a921441
--- /dev/null
+++ b/clang/test/Preprocessor/overflow.c
@@ -0,0 +1,25 @@
+// RUN: %clang_cc1 -Eonly %s -verify -triple i686-pc-linux-gnu
+
+// Multiply signed overflow
+#if 0x7FFFFFFFFFFFFFFF*2 // expected-warning {{overflow}}
+#endif
+
+// Multiply unsigned overflow
+#if 0xFFFFFFFFFFFFFFFF*2
+#endif
+
+// Add signed overflow
+#if 0x7FFFFFFFFFFFFFFF+1 // expected-warning {{overflow}}
+#endif
+
+// Add unsigned overflow
+#if 0xFFFFFFFFFFFFFFFF+1
+#endif
+
+// Subtract signed overflow
+#if 0x7FFFFFFFFFFFFFFF- -1 // expected-warning {{overflow}}
+#endif
+
+// Subtract unsigned overflow
+#if 0xFFFFFFFFFFFFFFFF- -1 // expected-warning {{converted from negative value}}
+#endif