unique_ptrify CXXBasePaths::DeclsFound & remove the then-unnecessary user-defined dtor

Maybe this and the NumDeclsFound member should just be a std::vector
instead. (it could be a std::dynarray, but that missed standardization)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@245392 91177308-0d34-0410-b5e6-96231b3b80d8

include/clang/AST/CXXInheritance.h

@@ -155,7 +155,7 @@ class CXXBasePaths {
   /// \brief Array of the declarations that have been found. This
   /// array is constructed only if needed, e.g., to iterate over the
   /// results within LookupResult.
-  NamedDecl **DeclsFound;
+  std::unique_ptr<NamedDecl *[]> DeclsFound;
   unsigned NumDeclsFound;
   
   friend class CXXRecordDecl;
@@ -172,15 +172,12 @@ public:
   
   /// BasePaths - Construct a new BasePaths structure to record the
   /// paths for a derived-to-base search.
-  explicit CXXBasePaths(bool FindAmbiguities = true,
-                        bool RecordPaths = true,
+  explicit CXXBasePaths(bool FindAmbiguities = true, bool RecordPaths = true,
                         bool DetectVirtual = true)
-    : FindAmbiguities(FindAmbiguities), RecordPaths(RecordPaths),
-      DetectVirtual(DetectVirtual), DetectedVirtual(nullptr),
-      DeclsFound(nullptr), NumDeclsFound(0) { }
-  
-  ~CXXBasePaths() { delete [] DeclsFound; }
-  
+      : FindAmbiguities(FindAmbiguities), RecordPaths(RecordPaths),
+        DetectVirtual(DetectVirtual), DetectedVirtual(nullptr),
+        NumDeclsFound(0) {}
+
   paths_iterator begin() { return Paths.begin(); }
   paths_iterator end()   { return Paths.end(); }
   const_paths_iterator begin() const { return Paths.begin(); }

lib/AST/CXXInheritance.cpp

@@ -31,16 +31,16 @@ void CXXBasePaths::ComputeDeclsFound() {
     Decls.insert(Path->Decls.front());
 
   NumDeclsFound = Decls.size();
-  DeclsFound = new NamedDecl * [NumDeclsFound];
-  std::copy(Decls.begin(), Decls.end(), DeclsFound);
+  DeclsFound = llvm::make_unique<NamedDecl *[]>(NumDeclsFound);
+  std::copy(Decls.begin(), Decls.end(), DeclsFound.get());
 }
 
 CXXBasePaths::decl_range CXXBasePaths::found_decls() {
   if (NumDeclsFound == 0)
     ComputeDeclsFound();
 
-  return decl_range(decl_iterator(DeclsFound),
-                    decl_iterator(DeclsFound + NumDeclsFound));
+  return decl_range(decl_iterator(DeclsFound.get()),
+                    decl_iterator(DeclsFound.get() + NumDeclsFound));
 }
 
 /// isAmbiguous - Determines whether the set of paths provided is