[libc++] Remove <cstdlib> include from <exception>

Author: philnik777

libcxx/include/__exception/exception_ptr.h

@@ -11,14 +11,14 @@
 
 #include <__config>
 #include <__cstddef/nullptr_t.h>
+#include <__cstddef/size_t.h>
 #include <__exception/operations.h>
 #include <__memory/addressof.h>
 #include <__memory/construct_at.h>
 #include <__type_traits/decay.h>
 #include <__type_traits/is_pointer.h>
 #include <__utility/move.h>
 #include <__utility/swap.h>
-#include <cstdlib>
 #include <typeinfo>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
@@ -35,7 +35,7 @@ _LIBCPP_PUSH_MACROS
 namespace __cxxabiv1 {
 
 extern "C" {
-_LIBCPP_OVERRIDABLE_FUNC_VIS void* __cxa_allocate_exception(size_t) throw();
+_LIBCPP_OVERRIDABLE_FUNC_VIS void* __cxa_allocate_exception(std::size_t) throw();
 _LIBCPP_OVERRIDABLE_FUNC_VIS void __cxa_free_exception(void*) throw();
 
 struct __cxa_exception;

libcxx/include/exception

@@ -97,6 +97,10 @@ template <class E> void rethrow_if_nested(const E& e);
 #    include <new>
 #    include <type_traits>
 #  endif
+
+#  if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 23
+#    include <cstdlib>
+#  endif
 #endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
 
 #endif // _LIBCPP_EXCEPTION

libcxx/test/libcxx/transitive_includes/cxx26.csv

@@ -245,7 +245,6 @@ deque stdexcept
 deque tuple
 deque version
 exception cstdint
-exception cstdlib
 exception typeinfo
 exception version
 execution version