r254846 - [AST] Use std::copy and std::fill to simplify some memcpy and memset calls. Also const-correct some methods being used since the std::copy catches the mismatch where memcpy didn't.

[Craig Topper via cfe-commits]

Author: ctopper
Date: Sat Dec  5 01:41:44 2015
New Revision: 254846

URL: http://llvm.org/viewvc/llvm-project?rev=254846&view=rev
Log:
[AST] Use std::copy and std::fill to simplify some memcpy and memset calls. Also const-correct some methods being used since the std::copy catches the mismatch where memcpy didn't.

Modified:
    cfe/trunk/include/clang/AST/Stmt.h

Modified: cfe/trunk/include/clang/AST/Stmt.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/AST/Stmt.h?rev=254846&r1=254845&r2=254846&view=diff
==============================================================================
--- cfe/trunk/include/clang/AST/Stmt.h (original)
+++ cfe/trunk/include/clang/AST/Stmt.h Sat Dec  5 01:41:44 2015
@@ -825,18 +825,20 @@ class AttributedStmt : public Stmt {
   AttributedStmt(SourceLocation Loc, ArrayRef<const Attr*> Attrs, Stmt *SubStmt)
     : Stmt(AttributedStmtClass), SubStmt(SubStmt), AttrLoc(Loc),
       NumAttrs(Attrs.size()) {
-    memcpy(getAttrArrayPtr(), Attrs.data(), Attrs.size() * sizeof(Attr *));
+    std::copy(Attrs.begin(), Attrs.end(), getAttrArrayPtr());
   }
 
   explicit AttributedStmt(EmptyShell Empty, unsigned NumAttrs)
     : Stmt(AttributedStmtClass, Empty), NumAttrs(NumAttrs) {
-    memset(getAttrArrayPtr(), 0, NumAttrs * sizeof(Attr *));
+    std::fill_n(getAttrArrayPtr(), NumAttrs, nullptr);
   }
 
-  Attr *const *getAttrArrayPtr() const {
-    return reinterpret_cast<Attr *const *>(this + 1);
+  const Attr *const *getAttrArrayPtr() const {
+    return reinterpret_cast<const Attr *const *>(this + 1);
+  }
+  const Attr **getAttrArrayPtr() {
+    return reinterpret_cast<const Attr **>(this + 1);
   }
-  Attr **getAttrArrayPtr() { return reinterpret_cast<Attr **>(this + 1); }
 
 public:
   static AttributedStmt *Create(const ASTContext &C, SourceLocation Loc,