--- a/lib/misc/gdbm.c	2011-06-18 07:24:06.000000000 -0300
+++ b/lib/misc/gdbm.c	2023-04-22 14:28:35.200400436 -0300
@@ -103,7 +103,7 @@
 
 extern gdbm_error gdbm_errno;
 extern int errno;
-static char *gdbm_error_message = "";
+static const char *gdbm_error_message = "";
 
 static SYMDESCR RW_Syms[] = {
     { "reader", GDBM_READER },
@@ -144,7 +144,7 @@
     return TYPE(x) == T_Gdbm_fh ? True : False;
 }
 
-static void Fatal_Func (char *s) {
+static void Fatal_Func (const char *s) {
     gdbm_error_message = s;
     fprintf (stderr, "gdbm error: %s\n", s);
 }
--- a/src/heap-gen.c	2011-06-18 07:24:06.000000000 -0300
+++ b/src/heap-gen.c	2023-04-22 14:14:51.977052826 -0300
@@ -872,7 +872,7 @@
  * determines whether the object is immutable.
  */
 
-Object Alloc_Object (size, type, konst) {
+Object Alloc_Object (int size, int type, int konst) {
     Object obj;
     register addrarith_t s = /* size in words */
         ((size + sizeof(Object) - 1) / sizeof(Object)) + 1;
--- a/lib/xwidgets/xaw/list.c	2011-06-18 07:41:13.000000000 -0300
+++ b/lib/xwidgets/xaw/list.c	2023-04-22 14:32:58.923738362 -0300
@@ -2,14 +2,15 @@
 #include <X11/Xaw/List.h>
 
 
-static char **Get_List (Object x) {
+static const char **Get_List (Object x) {
     register int i, n;
-    register char *s, **l;
+    register char *s;
+    register const char **l;
     Alloca_Begin;
 
     Check_List (x);
     n = Fast_Length (x);
-    l = (char **)XtMalloc ((n+1) * sizeof (char *));
+    l = (const char **)XtMalloc ((n+1) * sizeof (char *));
     for (i = 0; i < n; i++, x = Cdr (x)) {
         Get_Strsym_Stack (Car (x), s);
         l[i] = XtNewString (s);