SmallVector: return a valid iterator for the rare case of inserting an empty range into a SmallVector.

Patch by Johannes Schaub!

llvm-svn: 158643

1 files changed, 7 insertions, 0 deletions

diff --git a/llvm/unittests/ADT/SmallVectorTest.cpp b/llvm/unittests/ADT/SmallVectorTest.cpp
index c2542d6..8f6d2f4 100644
--- a/llvm/unittests/ADT/SmallVectorTest.cpp
+++ b/llvm/unittests/ADT/SmallVectorTest.cpp
@@ -353,6 +353,9 @@ TEST_F(SmallVectorTest, InsertRepeatedTest) {
   makeSequence(theVector, 10, 15);
   theVector.insert(theVector.begin() + 1, 2, Constructable(16));
   assertValuesInOrder(theVector, 8u, 10, 16, 16, 11, 12, 13, 14, 15);
+
+  EXPECT_EQ(theVector.end(),
+            theVector.insert(theVector.end(), 0, Constructable(42)));
 }
 
 // Insert range.
@@ -362,6 +365,10 @@ TEST_F(SmallVectorTest, InsertRangeTest) {
   makeSequence(theVector, 1, 3);
   theVector.insert(theVector.begin() + 1, 3, Constructable(77));
   assertValuesInOrder(theVector, 6u, 1, 77, 77, 77, 2, 3);
+
+  EXPECT_EQ(theVector.end(), theVector.insert(theVector.end(),
+                                              theVector.begin(),
+                                              theVector.begin()));
 }
 
 // Comparison tests.