Improve source-location information for implicitly-generated member call expressions

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@86989 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/ExprCXX.cpp b/lib/AST/ExprCXX.cpp
index 7c6fc41..0ba4608 100644
--- a/lib/AST/ExprCXX.cpp
+++ b/lib/AST/ExprCXX.cpp
@@ -323,6 +323,14 @@
   return 0;
 }
 
+SourceRange CXXMemberCallExpr::getSourceRange() const {
+  SourceLocation LocStart = getCallee()->getLocStart();
+  if (LocStart.isInvalid() && getNumArgs() > 0)
+    LocStart = getArg(0)->getLocStart();
+  return SourceRange(LocStart, getRParenLoc());
+}
+
+
 //===----------------------------------------------------------------------===//
 //  Named casts
 //===----------------------------------------------------------------------===//