Fix invalid shift operator overload in Scalar

Summary: This also fixes an infinite recursion between lldb_private::operator>> () and Scalar::operator>>= ().

Reviewers: sagar, tberghammer, labath

Subscribers: lldb-commits

Differential Revision: http://reviews.llvm.org/D16868

Patch by Marianne Mailhot-Sarrasin

llvm-svn: 260239

1 files changed, 32 insertions, 0 deletions

diff --git a/lldb/unittests/Core/ScalarTest.cpp b/lldb/unittests/Core/ScalarTest.cpp
new file mode 100644
index 00000000000..63c0daa424e
--- /dev/null
+++ b/lldb/unittests/Core/ScalarTest.cpp
@@ -0,0 +1,32 @@
+//===-- ScalarTest.cpp ------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#if defined(_MSC_VER) && (_HAS_EXCEPTIONS == 0)
+// Workaround for MSVC standard library bug, which fails to include <thread> when
+// exceptions are disabled.
+#include <eh.h>
+#endif
+
+#include "gtest/gtest.h"
+
+#include "lldb/Core/Scalar.h"
+
+using namespace lldb_private;
+
+TEST(ScalarTest, RightShiftOperator)
+{
+    int a = 0x00001000;
+    int b = 0xFFFFFFFF;
+    int c = 4;
+    Scalar a_scalar(a);
+    Scalar b_scalar(b);
+    Scalar c_scalar(c);
+    ASSERT_EQ(a >> c, a_scalar >> c_scalar);
+    ASSERT_EQ(b >> c, b_scalar >> c_scalar);
+}