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[creduce-dev] Patch for yet another LLVM trunk API change

DeclContext iterators using_directives_begin() and
using_directives_end() were replaced with iterator_range
using_directives().
C++11 is now required, so I hope the range-based for-loops are
acceptable.

diff --git a/clang_delta/RemoveUnusedFunction.cpp b/clang_delta/RemoveUnusedFunction.cpp
index f69c261435be..405cc5030385 100644
--- a/clang_delta/RemoveUnusedFunction.cpp
+++ b/clang_delta/RemoveUnusedFunction.cpp
@@ -654,9 +654,8 @@ RemoveUnusedFunction::lookupFunctionDeclShallow(const DeclarationName &DName,
     }
   }
 
-  for (DeclContext::udir_iterator I = Ctx->using_directives_begin(),
-       E = Ctx->using_directives_end(); I != E; ++I) {
-    const NamespaceDecl *ND = (*I)->getNominatedNamespace();
+  for (auto *I : Ctx->using_directives()) {
+    const NamespaceDecl *ND = I->getNominatedNamespace();
     // avoid infinite recursion
     if (ND->getLookupParent() == Ctx)
       return NULL;
diff --git a/clang_delta/Transformation.cpp b/clang_delta/Transformation.cpp
index 3068b14ce3d8..b440f9bfa33a 100644
--- a/clang_delta/Transformation.cpp
+++ b/clang_delta/Transformation.cpp
@@ -579,9 +579,8 @@ const FunctionDecl *Transformation::lookupFunctionDecl(
     }
   }
 
-  for (DeclContext::udir_iterator I = Ctx->using_directives_begin(),
-       E = Ctx->using_directives_end(); I != E; ++I) {
-    const NamespaceDecl *ND = (*I)->getNominatedNamespace();
+  for (auto *I : Ctx->using_directives()) {
+    const NamespaceDecl *ND = I->getNominatedNamespace();
     // avoid infinite recursion
     if (ND->getLookupParent() == Ctx)
       return NULL;
-- 
Markus