Add MemoryBufferRef(MemoryBuffer&) constructor.

patch by Jonathan Anderson!

llvm-svn: 253311

1 files changed, 9 insertions, 0 deletions

diff --git a/llvm/unittests/Support/MemoryBufferTest.cpp b/llvm/unittests/Support/MemoryBufferTest.cpp
index ffb809aa207..ffbd74dc4c0 100644
--- a/llvm/unittests/Support/MemoryBufferTest.cpp
+++ b/llvm/unittests/Support/MemoryBufferTest.cpp
@@ -170,6 +170,15 @@ TEST_F(MemoryBufferTest, getOpenFileReopened) {
 }
 
 
+TEST_F(MemoryBufferTest, reference) {
+  OwningBuffer MB(MemoryBuffer::getMemBuffer(data));
+  MemoryBufferRef MBR(*MB);
+
+  EXPECT_EQ(MB->getBufferStart(), MBR.getBufferStart());
+  EXPECT_EQ(MB->getBufferIdentifier(), MBR.getBufferIdentifier());
+}
+
+
 TEST_F(MemoryBufferTest, slice) {
   // Create a file that is six pages long with different data on each page.
   int FD;