When creating the declaration reference for implicit copy-construction

of a base class, give it real source-location information. Fixes PR7017.

llvm-svn: 102916

clang/lib/Sema/SemaDeclCXX.cpp

@@ -1501,7 +1501,7 @@ BuildImplicitBaseInitializer(Sema &SemaRef, CXXConstructorDecl *Constructor,
     
     Expr *CopyCtorArg = 
       DeclRefExpr::Create(SemaRef.Context, 0, SourceRange(), Param, 
-                          SourceLocation(), ParamType, 0);
+                          Constructor->getLocation(), ParamType, 0);
     
     // Cast to the base class to avoid ambiguities.
     QualType ArgTy =