gcc12.patch

diff --git a/kernel/src/api/v4/tcb.h b/kernel/src/api/v4/tcb.h
index 21b10df..779aad5 100644
--- a/kernel/src/api/v4/tcb.h
+++ b/kernel/src/api/v4/tcb.h
@@ -763,13 +763,13 @@ INLINE arch_ktcb_t *tcb_t::get_arch()
 
 INLINE tcb_t * get_idle_tcb()
 {
-    extern tcb_t *__idle_tcb;
+    extern const tcb_t *__idle_tcb;
     return (tcb_t*)__idle_tcb;
 }
 
 INLINE tcb_t * get_dummy_tcb()
 {
-    extern tcb_t *__dummy_tcb;
+    extern const tcb_t *__dummy_tcb;
     return (tcb_t*)__dummy_tcb;
 }