diff -Naur idle-lisa-emu-code-r26/cpu/debug.c idle-lisa-emu-code-r26-patched/cpu/debug.c
--- idle-lisa-emu-code-r26/cpu/debug.c	2018-01-30 01:08:30.000000000 +0300
+++ idle-lisa-emu-code-r26-patched/cpu/debug.c	2024-12-15 21:38:05.553397485 +0300
@@ -1132,6 +1132,7 @@
         sprintf(buf, "LINE F   %04x", inst_stream[0]);
         return 1;
     }
+	return 0;
 }
 
 
diff -Naur idle-lisa-emu-code-r26/debug/trace.c idle-lisa-emu-code-r26-patched/debug/trace.c
--- idle-lisa-emu-code-r26/debug/trace.c	2021-05-18 16:02:28.000000000 +0300
+++ idle-lisa-emu-code-r26-patched/debug/trace.c	2024-12-15 21:36:54.026395480 +0300
@@ -68,11 +68,13 @@
 	if (logStream!=NULL) {
 		log=logStream;
 	}
+	return 0;
 }
 
 int
 deinit_trace(void) {
 	if (trace_init_flag) free(trace_log_tab);
+	return 0;
 }
 
 // utility func 
@@ -91,6 +93,7 @@
 
 int
 do_notrace(char *fmt,...) {
+	return 0;
 }
 
 // helper function to format messages
diff -Naur idle-lisa-emu-code-r26/main_sdl.cpp idle-lisa-emu-code-r26-patched/main_sdl.cpp
--- idle-lisa-emu-code-r26/main_sdl.cpp	2022-10-01 19:39:06.000000000 +0300
+++ idle-lisa-emu-code-r26-patched/main_sdl.cpp	2024-12-15 21:38:50.703398751 +0300
@@ -648,6 +648,7 @@
               }
         lisa_screen_cur=lisa_screen_next;
         lisa_screen_next=(lisa_screen_cur+1)&1;
+	return 0;
 }
 
 static int full=0;
@@ -865,6 +866,7 @@
       dump_regs();
       unscare_mouse();
       ask_bkpt=0;    
+	return 0;
       // disass_debugger();
       // regs_debugger();
       // refresh_mmu_box();
diff -Naur idle-lisa-emu-code-r26/mmu/mmu.c idle-lisa-emu-code-r26-patched/mmu/mmu.c
--- idle-lisa-emu-code-r26/mmu/mmu.c	2021-05-18 16:02:28.000000000 +0300
+++ idle-lisa-emu-code-r26-patched/mmu/mmu.c	2024-12-15 21:37:44.654396899 +0300
@@ -938,6 +938,7 @@
                     mmuSTATUS&=(~8);
                     m68ki_bus_error(address, MODE_READ);
              }
+	return 0;
 }
 INLINE uint16 LisaGetW(uint32 address)
 {
@@ -978,6 +979,7 @@
                     mmuSTATUS&=(~8);
                     m68ki_bus_error(address, MODE_READ);
              }
+	return 0;
 }
 
 uint16 LisaGetWDebug(uint32 address)
diff -Naur idle-lisa-emu-code-r26/time/timer.c idle-lisa-emu-code-r26-patched/time/timer.c
--- idle-lisa-emu-code-r26/time/timer.c	2015-09-19 02:13:18.000000000 +0300
+++ idle-lisa-emu-code-r26-patched/time/timer.c	2024-12-15 21:35:44.889393542 +0300
@@ -51,6 +51,7 @@
 	timer_tab[g_timer_num].start=g_timer_clock;
 	timer_tab[g_timer_num].expire=idle_timer_add(g_timer_clock,delta);	
 	g_timer_num++;
+	return 0;
 }
 
 void idle_timer_update_clock(idle_time delta) {