Replace the _noreturn macro with the C++ native attribute [[noreturn]]

kernel/src/Log.cpp

@@ -118,7 +118,7 @@ bool log_text_console_enabled()
 
 static bool g_check_already_failed = false;
 
-_noreturn bool __check_failed(const char* file, const char* line, const char* func, const char* expr)
+[[noreturn]] bool __check_failed(const char* file, const char* line, const char* func, const char* expr)
 {
     if (!g_check_already_failed)
     { // Avoid endlessly failing when trying to report a failed check.

luna/include/luna/Attributes.h

@@ -2,5 +2,4 @@
 
 #define _weak __attribute__((weak))
 #define _format(n, m) __attribute__((format(printf, n, m)))
-#define _align(x) __attribute__((aligned(x)))
+#define _align(x) __attribute__((aligned(x)))
-#define _noreturn __attribute__((noreturn))

luna/include/luna/Check.h

@@ -1,7 +1,7 @@
 #pragma once
 #include <luna/Attributes.h>
 
-extern _noreturn bool __check_failed(const char* file, const char* line, const char* func, const char* expr);
+[[noreturn]] extern bool __check_failed(const char* file, const char* line, const char* func, const char* expr);
 
 #ifndef STRINGIZE_VALUE_OF
 #define STRINGIZE(x) #x

luna/src/Check.cpp

@@ -1,6 +1,6 @@
 #include <luna/Attributes.h>
 
-_weak _noreturn bool __check_failed(const char*, const char*, const char*, const char*)
+_weak [[noreturn]] bool __check_failed(const char*, const char*, const char*, const char*)
 {
     __builtin_trap();
 }