[libcxx] Fix for ALL undefined behavior in <list>.
Summary:
This patch fixes std::list for builtin pointer types in the current ABI version and fixes std::list for all fancy pointer types in the next ABI version. The patch was designed to minimize the amount of code needed to support both ABI configurations. Currently only ~5 lines of code differ.
Reviewers: danalbert, jroelofs, mclow.lists
Subscribers: dexonsmith, awi, cfe-commits
Differential Revision: http://reviews.llvm.org/D12299
llvm-svn: 256652
diff --git a/libcxx/include/__config b/libcxx/include/__config
index f141f4f..c0b1ef2 100644
--- a/libcxx/include/__config
+++ b/libcxx/include/__config
@@ -39,6 +39,8 @@
#define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
// Fix deque iterator type in order to support incomplete types.
#define _LIBCPP_ABI_INCOMPLETE_TYPES_IN_DEQUE
+// Fix undefined behavior in how std::list stores it's linked nodes.
+#define _LIBCPP_ABI_LIST_REMOVE_NODE_POINTER_UB
#endif
#define _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_X##_LIBCPP_Y