Add an explicit move constructor to SrcBuffer

MSVC can't synthesize the explicit one.  Instead it tries to emit a copy
ctor which would call the deleted copy ctor of unique_ptr.

llvm-svn: 216244

1 files changed, 5 insertions, 0 deletions

diff --git a/llvm/include/llvm/Support/SourceMgr.h b/llvm/include/llvm/Support/SourceMgr.h
index 19dad6b6ac5..f9e114b67cb 100644
--- a/llvm/include/llvm/Support/SourceMgr.h
+++ b/llvm/include/llvm/Support/SourceMgr.h
@@ -51,6 +51,11 @@ private:
 
     /// This is the location of the parent include, or null if at the top level.
     SMLoc IncludeLoc;
+
+    SrcBuffer() {}
+
+    SrcBuffer(SrcBuffer &&O)
+        : Buffer(std::move(O.Buffer)), IncludeLoc(O.IncludeLoc) {}
   };
 
   /// This is all of the buffers that we are reading from.