Index: include/__locale
===================================================================
--- include/__locale
+++ include/__locale
@@ -201,6 +201,8 @@
     friend class locale::__imp;
 };
 
+_LIBCPP_NORETURN _LIBCPP_FUNC_VIS void __throw_runtime_error(const char*);
+
 template <class _Facet>
 inline _LIBCPP_INLINE_VISIBILITY
 locale::locale(const locale& __other, _Facet* __f)
@@ -1229,8 +1231,6 @@
 _LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS codecvt_byname<wchar_t, char, mbstate_t>)
 _LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS codecvt_byname<char16_t, char, mbstate_t>)
 _LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS codecvt_byname<char32_t, char, mbstate_t>)
-
-_LIBCPP_NORETURN _LIBCPP_FUNC_VIS void __throw_runtime_error(const char*);
 
 template <size_t _Np>
 struct __narrow_to_utf8
Index: include/stdexcept
===================================================================
--- include/stdexcept
+++ include/stdexcept
@@ -182,9 +182,6 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-// in the dylib
-_LIBCPP_NORETURN _LIBCPP_FUNC_VIS void __throw_runtime_error(const char*);
-
 _LIBCPP_NORETURN inline _LIBCPP_ALWAYS_INLINE
 void __throw_logic_error(const char*__msg)
 {