1 files changed, 22 insertions, 0 deletions
diff --git a/unittests/ADT/ArrayRefTest.cpp b/unittests/ADT/ArrayRefTest.cpp
index 6cbadd6bc228..b5b71f06f65b 100644
--- a/unittests/ADT/ArrayRefTest.cpp
+++ b/unittests/ADT/ArrayRefTest.cpp
@@ -65,6 +65,21 @@ TEST(ArrayRefTest, DropBack) {
   ArrayRef<int> AR1(TheNumbers);
   ArrayRef<int> AR2(TheNumbers, AR1.size() - 1);
   EXPECT_TRUE(AR1.drop_back().equals(AR2));
+
+  // Check that drop_back accepts size_t-sized numbers.
+  ArrayRef<char> AR3((const char *)0x10000, SIZE_MAX - 0x10000);
+  EXPECT_EQ(1U, AR3.drop_back(AR3.size() - 1).size());
+}
+
+TEST(ArrayRefTest, DropFront) {
+  static const int TheNumbers[] = {4, 8, 15, 16, 23, 42};
+  ArrayRef<int> AR1(TheNumbers);
+  ArrayRef<int> AR2(&TheNumbers[2], AR1.size() - 2);
+  EXPECT_TRUE(AR1.drop_front(2).equals(AR2));
+
+  // Check that drop_front accepts size_t-sized numbers.
+  ArrayRef<char> AR3((const char *)0x10000, SIZE_MAX - 0x10000);
+  EXPECT_EQ(1U, AR3.drop_front(AR3.size() - 1).size());
 }
 
 TEST(ArrayRefTest, Equals) {
@@ -94,6 +109,13 @@ TEST(ArrayRefTest, EmptyEquals) {
   EXPECT_TRUE(ArrayRef<unsigned>() == ArrayRef<unsigned>());
 }
 
+TEST(ArrayRefTest, Slice) {
+  // Check that slice accepts size_t-sized numbers.
+  ArrayRef<char> AR((const char *)0x10000, SIZE_MAX - 0x10000);
+  EXPECT_EQ(1U, AR.slice(AR.size() - 1).size());
+  EXPECT_EQ(AR.size() - 1, AR.slice(1, AR.size() - 1).size());
+}
+
 TEST(ArrayRefTest, ConstConvert) {
   int buf[4];
   for (int i = 0; i < 4; ++i)