Compilation error when we have weird combos for this code

Author: trcrsired

benchmark/0016.endl/u8c_file_unlocked.cc

@@ -7,7 +7,7 @@ using namespace fast_io::io;
 int main()
 {
 	fast_io::timer tm(u8"u8c_file_unlocked");
-	fast_io::u8c_file_unlocked cf(u8"filebuf_file.txt", fast_io::open_mode::out);
+	fast_io::u8c_file_unlocked cf(u8"c_file_unlocked.txt", fast_io::open_mode::out);
 	for (std::size_t i{}; i != 10000000; ++i)
 	{
 		print(cf, u8"Hello World\n");

include/fast_io_core_impl/operations/writeimpl/basis.h

@@ -341,6 +341,11 @@ template <typename outstmtype>
 inline constexpr void write_all_bytes_cold_impl(outstmtype outsm, ::std::byte const *first, ::std::byte const *last)
 {
 	using char_type = typename outstmtype::output_char_type;
+	using char_type_const_ptr
+#if __has_cpp_attribute(__gnu__::__may_alias__)
+		[[__gnu__::__may_alias__]]
+#endif
+		= char_type const *;
 	if constexpr (::fast_io::operations::decay::defines::has_write_all_bytes_overflow_define<outstmtype>)
 	{
 		write_all_bytes_overflow_define(outsm, first, last);
@@ -363,7 +368,8 @@ inline constexpr void write_all_bytes_cold_impl(outstmtype outsm, ::std::byte co
 				::std::ptrdiff_t itdiff{last - first};
 				if (itdiff < bfddiff)
 				{
-					obuffer_set_curr(outsm, non_overlapped_copy_n(first, static_cast<::std::size_t>(itdiff), curr));
+					obuffer_set_curr(outsm, non_overlapped_copy_n(
+												reinterpret_cast<char_type_const_ptr>(first), static_cast<::std::size_t>(itdiff), curr));
 					return;
 				}
 			}