https://bugs.gentoo.org/875674

--- xtrs-4.9d/trs_disk.c
+++ xtrs-4.9d/trs_disk.c
@@ -3137,7 +3137,7 @@
 }
 
 void
-real_restore(curdrive)
+real_restore(int curdrive)
 {
 #if __linux
   DiskState *d = &disk[curdrive];
--- xtrs-4.9d/trs_memory.c
+++ xtrs-4.9d/trs_memory.c
@@ -153,7 +153,7 @@
     memory_map = which + (trs_model << 4) + (romin << 2);
 }
 
-void mem_romin(state)
+void mem_romin(int state)
 {
     romin = (state & 1);
     memory_map = (memory_map & ~4) + (romin << 2);
--- xtrs-4.9d/trs_printer.c
+++ xtrs-4.9d/trs_printer.c
@@ -18,7 +18,7 @@
 #include "z80.h"
 #include "trs.h"
 
-void trs_printer_write(value)
+void trs_printer_write(int value)
 {
     if(value == 0x0D)
     {