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-rw-r--r--libcxx/include/__config4
1 files changed, 4 insertions, 0 deletions
diff --git a/libcxx/include/__config b/libcxx/include/__config
index 1fe96d0ba08..7f6fbf07b58 100644
--- a/libcxx/include/__config
+++ b/libcxx/include/__config
@@ -34,7 +34,11 @@
#endif
#if defined(_LIBCPP_ABI_UNSTABLE) || _LIBCPP_ABI_VERSION >= 2
+// Change short string represention so that string data starts at offset 0,
+// improving its alignment in some cases.
#define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
+// Fix deque iterator type in order to support incomplete types.
+#define _LIBCPP_ABI_INCOMPLETE_TYPES_IN_DEQUE
#endif
#define _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_X##_LIBCPP_Y
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