vendor/clang/clang-release_32-r168974

1 files changed, 14 insertions, 0 deletions

diff --git a/test/Analysis/bitwise-ops.c b/test/Analysis/bitwise-ops.c
new file mode 100644
index 000000000000..bf282eca27d4
--- /dev/null
+++ b/test/Analysis/bitwise-ops.c
@@ -0,0 +1,14 @@
+// RUN: %clang_cc1 -analyze -analyzer-checker=core,debug.ExprInspection -verify %s
+
+void clang_analyzer_eval(int);
+#define CHECK(expr) if (!(expr)) return; clang_analyzer_eval(expr)
+
+void testPersistentConstraints(int x, int y) {
+  // Sanity check
+  CHECK(x); // expected-warning{{TRUE}}
+  CHECK(x & 1); // expected-warning{{TRUE}}
+  
+  // False positives due to SValBuilder giving up on certain kinds of exprs.
+  CHECK(1 - x); // expected-warning{{UNKNOWN}}
+  CHECK(x & y); // expected-warning{{UNKNOWN}}
+}
\ No newline at end of file