fix cstr_len build issue on C++20

cppfastio · Apr 28, 2024 · 3b4f396 · 3b4f396
1 parent dff48a3
commit 3b4f396
Showing 1 changed file with 4 additions and 4 deletions.
diff --git a/include/fast_io_core_impl/freestanding/cstr_len.h b/include/fast_io_core_impl/freestanding/cstr_len.h
@@ -31,13 +31,13 @@ inline constexpr ::std::size_t dummy_cstr_nlen(char_type const *cstr, ::std::siz
 template <::std::integral char_type>
 inline constexpr ::std::size_t cstr_len(char_type const *cstr) noexcept
 {
-#if __cpp_consteval >= 202106L
+#ifdef __cpp_if_consteval
 	if consteval
 	{
 		return details::dummy_cstr_len(cstr);
 	}
 #else
-	if (::std::is_constant_evaluated())
+	if (__builtin_is_constant_evaluated())
 	{
 		return details::dummy_cstr_len(cstr);
 	}
@@ -66,13 +66,13 @@ inline constexpr ::std::size_t cstr_len(char_type const *cstr) noexcept
 template <::std::integral char_type>
 inline constexpr ::std::size_t cstr_nlen(char_type const *cstr, ::std::size_t n) noexcept
 {
-#if __cpp_consteval >= 202106L
+#ifdef __cpp_if_consteval
 	if consteval
 	{
 		return details::dummy_cstr_nlen(cstr, n);
 	}
 #else
-	if (::std::is_constant_evaluated())
+	if (__builtin_is_constant_evaluated())
 	{
 		return details::dummy_cstr_nlen(cstr, n);
 	}