Index: kernel/arch/arm32/include/asm.h
===================================================================
--- kernel/arch/arm32/include/asm.h	(revision c22e964a598c0c20654391f6a11e7333830cbf37)
+++ kernel/arch/arm32/include/asm.h	(revision 39e8406404efea86e341847c0720d5d65bed7959)
@@ -96,5 +96,5 @@
 }
 
-extern void cpu_halt(void);
+extern void cpu_halt(void) __attribute__((noreturn));
 extern void asm_delay_loop(uint32_t t);
 extern void userspace_asm(uintptr_t ustack, uintptr_t uspace_uarg,