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D53952.id.diff
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D53952.id.diff
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diff --git a/include/uchar.h b/include/uchar.h
--- a/include/uchar.h
+++ b/include/uchar.h
@@ -32,6 +32,11 @@
#include <sys/cdefs.h>
#include <sys/_types.h>
+#if __ISO_C_VISIBLE >= 2023 && !defined(_CHAR8_T_DECLARED)
+typedef unsigned char char8_t;
+#define _CHAR8_T_DECLARED
+#endif
+
#ifndef _CHAR16_T_DECLARED
typedef __char16_t char16_t;
#define _CHAR16_T_DECLARED
diff --git a/sys/sys/stdatomic.h b/sys/sys/stdatomic.h
--- a/sys/sys/stdatomic.h
+++ b/sys/sys/stdatomic.h
@@ -54,6 +54,9 @@
#ifdef __GCC_ATOMIC_CHAR_LOCK_FREE
#define ATOMIC_CHAR_LOCK_FREE __GCC_ATOMIC_CHAR_LOCK_FREE
#endif
+#if __ISO_C_VISIBLE >= 2023 && defined(__GCC_ATOMIC_CHAR8_T_LOCK_FREE)
+#define ATOMIC_CHAR8_T_LOCK_FREE __GCC_ATOMIC_CHAR8_T_LOCK_FREE
+#endif
#ifdef __GCC_ATOMIC_CHAR16_T_LOCK_FREE
#define ATOMIC_CHAR16_T_LOCK_FREE __GCC_ATOMIC_CHAR16_T_LOCK_FREE
#endif
@@ -199,6 +202,9 @@
typedef _Atomic(unsigned long) atomic_ulong;
typedef _Atomic(long long) atomic_llong;
typedef _Atomic(unsigned long long) atomic_ullong;
+#if __ISO_C_VISIBLE >= 2023
+typedef _Atomic(unsigned char) atomic_char8_t;
+#endif
typedef _Atomic(__char16_t) atomic_char16_t;
typedef _Atomic(__char32_t) atomic_char32_t;
typedef _Atomic(___wchar_t) atomic_wchar_t;
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