dblaikie added inline comments.
================
Comment at: include/clang/Driver/Compilation.h:54
@@ +53,3 @@
+ /// to consumers; it's here just to manage ownership.
+ std::vector<std::unique_ptr<Action>> OwningActions;
+
----------------
Seems like this name isn't quite right ("OwningActions" sounds like "these are
the actions that own <something>") - perhaps "AllActions"? (maybe
"ActionHolder"? Not sure)
================
Comment at: include/clang/Driver/Compilation.h:118
@@ +117,3 @@
+ template <typename T, typename... Args> T *MakeAction(Args &&... Arg) {
+ static_assert(std::is_convertible<T *, Action *>::value,
+ "T must be derived from Action.");
----------------
Did you find this static_assert to be particularly helpful? Similar errors
(though somewhat more verbose) would be produced during the push_back call a
few lines down anyway.
================
Comment at: include/clang/Driver/Compilation.h:120
@@ +119,3 @@
+ "T must be derived from Action.");
+ std::unique_ptr<T> A = llvm::make_unique<T>(std::forward<Args>(Arg)...);
+ T* RawPtr = A.get();
----------------
Up to you, but we usually just drop the "std::unique_ptr<T>" in favor of "auto"
when the RHS has "make_unique".
http://reviews.llvm.org/D15911
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