Patches for gcc15.

Signed-off-by: André Malo <nd@perlig.de>
Reference: https://bugs.gentoo.org/945469
diff '--color=auto' -Nur djbdns-1.05~/alloc.c djbdns-1.05/alloc.c
--- djbdns-1.05~/alloc.c	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/alloc.c	2025-12-02 22:43:49.677462093 +0100
@@ -10,8 +10,7 @@
 #define space ((char *) realspace)
 static unsigned int avail = SPACE; /* multiple of ALIGNMENT; 0<=avail<=SPACE */
 
-/*@null@*//*@out@*/char *alloc(n)
-unsigned int n;
+/*@null@*//*@out@*/void *alloc(size_t n)
 {
   char *x;
   n = ALIGNMENT + n - (n & (ALIGNMENT - 1)); /* XXX: could overflow */
@@ -21,9 +20,9 @@
   return x;
 }
 
-void alloc_free(x)
-char *x;
+void alloc_free(void *x_)
 {
+  char *x = x_;
   if (x >= space)
     if (x < space + SPACE)
       return; /* XXX: assuming that pointers are flat */
diff '--color=auto' -Nur djbdns-1.05~/alloc.h djbdns-1.05/alloc.h
--- djbdns-1.05~/alloc.h	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/alloc.h	2025-12-02 22:43:49.677666536 +0100
@@ -1,8 +1,10 @@
+#include <stddef.h>
+
 #ifndef ALLOC_H
 #define ALLOC_H
 
-extern /*@null@*//*@out@*/char *alloc();
-extern void alloc_free();
-extern int alloc_re();
+extern /*@null@*//*@out@*/void *alloc(size_t);
+extern void alloc_free(void *);
+extern int alloc_re(void *, size_t, size_t);
 
 #endif
diff '--color=auto' -Nur djbdns-1.05~/alloc_re.c djbdns-1.05/alloc_re.c
--- djbdns-1.05~/alloc_re.c	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/alloc_re.c	2025-12-02 22:43:49.677764806 +0100
@@ -1,11 +1,9 @@
 #include "alloc.h"
 #include "byte.h"
 
-int alloc_re(x,m,n)
-char **x;
-unsigned int m;
-unsigned int n;
+int alloc_re(void *x_, size_t m, size_t n)
 {
+  char **x = x_;
   char *y;
  
   y = alloc(n);
diff '--color=auto' -Nur djbdns-1.05~/auto-str.c djbdns-1.05/auto-str.c
--- djbdns-1.05~/auto-str.c	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/auto-str.c	2025-12-02 22:43:49.677856118 +0100
@@ -4,6 +4,7 @@
 char bspace[256];
 buffer b = BUFFER_INIT(buffer_unixwrite,1,bspace,sizeof bspace);
 
+#define puts puts_
 void puts(const char *s)
 {
   if (buffer_puts(&b,s) == -1) _exit(111);
diff '--color=auto' -Nur djbdns-1.05~/axfr-get.c djbdns-1.05/axfr-get.c
--- djbdns-1.05~/axfr-get.c	2025-12-02 22:43:37.114107512 +0100
+++ djbdns-1.05/axfr-get.c	2025-12-02 22:43:49.677982306 +0100
@@ -360,7 +360,7 @@
 
   fd = open_trunc(fntmp);
   if (fd == -1) die_write();
-  buffer_init(&b,buffer_unixwrite,fd,bspace,sizeof bspace);
+  buffer_init(&b,(buffer_op)buffer_unixwrite,fd,bspace,sizeof bspace);
 
   if (!stralloc_copyb(&packet,"\0\0\0\0\0\1\0\0\0\0\0\0",12)) die_generate();
   if (!stralloc_catb(&packet,zone,zonelen)) die_generate();
diff '--color=auto' -Nur djbdns-1.05~/buffer.c djbdns-1.05/buffer.c
--- djbdns-1.05~/buffer.c	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/buffer.c	2025-12-02 22:43:49.678114373 +0100
@@ -1,6 +1,6 @@
 #include "buffer.h"
 
-void buffer_init(buffer *s,int (*op)(),int fd,char *buf,unsigned int len)
+void buffer_init(buffer *s, buffer_op op, int fd, char *buf, size_t len)
 {
   s->x = buf;
   s->fd = fd;
diff '--color=auto' -Nur djbdns-1.05~/buffer_get.c djbdns-1.05/buffer_get.c
--- djbdns-1.05~/buffer_get.c	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/buffer_get.c	2025-12-02 22:43:49.678243357 +0100
@@ -2,7 +2,7 @@
 #include "byte.h"
 #include "error.h"
 
-static int oneread(int (*op)(),int fd,char *buf,unsigned int len)
+static ssize_t oneread(buffer_op op, int fd, char *buf, size_t len)
 {
   int r;
 
@@ -13,7 +13,7 @@
   }
 }
 
-static int getthis(buffer *s,char *buf,unsigned int len)
+static ssize_t getthis(buffer *s, char *buf, size_t len)
 {
   if (len > s->p) len = s->p;
   s->p -= len;
@@ -22,9 +22,9 @@
   return len;
 }
 
-int buffer_feed(buffer *s)
+ssize_t buffer_feed(buffer *s)
 {
-  int r;
+  ssize_t r;
 
   if (s->p) return s->p;
   r = oneread(s->op,s->fd,s->x,s->n);
@@ -35,9 +35,9 @@
   return r;
 }
 
-int buffer_bget(buffer *s,char *buf,unsigned int len)
+ssize_t buffer_bget(buffer *s, char *buf, size_t len)
 {
-  int r;
+  ssize_t r;
  
   if (s->p > 0) return getthis(s,buf,len);
   if (s->n <= len) return oneread(s->op,s->fd,buf,s->n);
@@ -45,9 +45,9 @@
   return getthis(s,buf,len);
 }
 
-int buffer_get(buffer *s,char *buf,unsigned int len)
+ssize_t buffer_get(buffer *s, char *buf, size_t len)
 {
-  int r;
+  ssize_t r;
  
   if (s->p > 0) return getthis(s,buf,len);
   if (s->n <= len) return oneread(s->op,s->fd,buf,len);
@@ -60,7 +60,7 @@
   return s->x + s->n;
 }
 
-void buffer_seek(buffer *s,unsigned int len)
+void buffer_seek(buffer *s, size_t len)
 {
   s->n += len;
   s->p -= len;
diff '--color=auto' -Nur djbdns-1.05~/buffer.h djbdns-1.05/buffer.h
--- djbdns-1.05~/buffer.h	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/buffer.h	2025-12-02 22:43:49.678364797 +0100
@@ -1,27 +1,31 @@
+#include <stddef.h>
+#include <sys/types.h>
+
 #ifndef BUFFER_H
 #define BUFFER_H
 
+typedef ssize_t (*buffer_op)(int, void *, size_t);
 typedef struct buffer {
   char *x;
-  unsigned int p;
-  unsigned int n;
+  size_t p;
+  size_t n;
   int fd;
-  int (*op)();
+  buffer_op op;
 } buffer;
 
-#define BUFFER_INIT(op,fd,buf,len) { (buf), 0, (len), (fd), (op) }
+#define BUFFER_INIT(op,fd,buf,len) { (buf), 0, (len), (fd), ((buffer_op)(op)) }
 #define BUFFER_INSIZE 8192
 #define BUFFER_OUTSIZE 8192
 
-extern void buffer_init(buffer *,int (*)(),int,char *,unsigned int);
+extern void buffer_init(buffer *, buffer_op, int, char *, size_t);
 
 extern int buffer_flush(buffer *);
-extern int buffer_put(buffer *,const char *,unsigned int);
-extern int buffer_putalign(buffer *,const char *,unsigned int);
-extern int buffer_putflush(buffer *,const char *,unsigned int);
-extern int buffer_puts(buffer *,const char *);
-extern int buffer_putsalign(buffer *,const char *);
-extern int buffer_putsflush(buffer *,const char *);
+extern int buffer_put(buffer *, const char *, size_t);
+extern int buffer_putalign(buffer *,const char *, size_t);
+extern int buffer_putflush(buffer *,const char *, size_t);
+extern int buffer_puts(buffer *, const char *);
+extern int buffer_putsalign(buffer *, const char *);
+extern int buffer_putsflush(buffer *, const char *);
 
 #define buffer_PUTC(s,c) \
   ( ((s)->n != (s)->p) \
@@ -29,12 +33,12 @@
     : buffer_put((s),&(c),1) \
   )
 
-extern int buffer_get(buffer *,char *,unsigned int);
-extern int buffer_bget(buffer *,char *,unsigned int);
-extern int buffer_feed(buffer *);
+extern ssize_t buffer_get(buffer *, char *, size_t);
+extern ssize_t buffer_bget(buffer *, char *, size_t);
+extern ssize_t buffer_feed(buffer *);
 
 extern char *buffer_peek(buffer *);
-extern void buffer_seek(buffer *,unsigned int);
+extern void buffer_seek(buffer *, size_t);
 
 #define buffer_PEEK(s) ( (s)->x + (s)->n )
 #define buffer_SEEK(s,len) ( ( (s)->p -= (len) ) , ( (s)->n += (len) ) )
@@ -47,8 +51,8 @@
 
 extern int buffer_copy(buffer *,buffer *);
 
-extern int buffer_unixread(int,char *,unsigned int);
-extern int buffer_unixwrite(int,const char *,unsigned int);
+extern ssize_t buffer_unixread(int, void *, size_t);
+extern ssize_t buffer_unixwrite(int, const void *, size_t);
 
 extern buffer *buffer_0;
 extern buffer *buffer_0small;
diff '--color=auto' -Nur djbdns-1.05~/buffer_put.c djbdns-1.05/buffer_put.c
--- djbdns-1.05~/buffer_put.c	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/buffer_put.c	2025-12-02 22:43:49.678490334 +0100
@@ -3,12 +3,12 @@
 #include "byte.h"
 #include "error.h"
 
-static int allwrite(int (*op)(),int fd,const char *buf,unsigned int len)
+static int allwrite(buffer_op op, int fd, const char *buf, size_t len)
 {
-  int w;
+  ssize_t w;
 
   while (len) {
-    w = op(fd,buf,len);
+    w = op(fd,(char *)buf,len);
     if (w == -1) {
       if (errno == error_intr) continue;
       return -1; /* note that some data may have been written */
@@ -22,7 +22,7 @@
 
 int buffer_flush(buffer *s)
 {
-  int p;
+  size_t p;
  
   p = s->p;
   if (!p) return 0;
@@ -30,9 +30,9 @@
   return allwrite(s->op,s->fd,s->x,p);
 }
 
-int buffer_putalign(buffer *s,const char *buf,unsigned int len)
+int buffer_putalign(buffer *s, const char *buf, size_t len)
 {
-  unsigned int n;
+  size_t n;
  
   while (len > (n = s->n - s->p)) {
     byte_copy(s->x + s->p,n,buf); s->p += n; buf += n; len -= n;
@@ -44,9 +44,9 @@
   return 0;
 }
 
-int buffer_put(buffer *s,const char *buf,unsigned int len)
+int buffer_put(buffer *s, const char *buf, size_t len)
 {
-  unsigned int n;
+  size_t n;
  
   n = s->n;
   if (len > n - s->p) {
@@ -66,23 +66,23 @@
   return 0;
 }
 
-int buffer_putflush(buffer *s,const char *buf,unsigned int len)
+int buffer_putflush(buffer *s, const char *buf, size_t len)
 {
   if (buffer_flush(s) == -1) return -1;
   return allwrite(s->op,s->fd,buf,len);
 }
 
-int buffer_putsalign(buffer *s,const char *buf)
+int buffer_putsalign(buffer *s, const char *buf)
 {
   return buffer_putalign(s,buf,str_len(buf));
 }
 
-int buffer_puts(buffer *s,const char *buf)
+int buffer_puts(buffer *s, const char *buf)
 {
   return buffer_put(s,buf,str_len(buf));
 }
 
-int buffer_putsflush(buffer *s,const char *buf)
+int buffer_putsflush(buffer *s, const char *buf)
 {
   return buffer_putflush(s,buf,str_len(buf));
 }
diff '--color=auto' -Nur djbdns-1.05~/buffer_read.c djbdns-1.05/buffer_read.c
--- djbdns-1.05~/buffer_read.c	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/buffer_read.c	2025-12-02 22:43:49.678576265 +0100
@@ -1,7 +1,7 @@
 #include <unistd.h>
 #include "buffer.h"
 
-int buffer_unixread(int fd,char *buf,unsigned int len)
+ssize_t buffer_unixread(int fd, void *buf, size_t len)
 {
-  return read(fd,buf,len);
+  return read(fd,(char *)buf,len);
 }
diff '--color=auto' -Nur djbdns-1.05~/buffer_write.c djbdns-1.05/buffer_write.c
--- djbdns-1.05~/buffer_write.c	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/buffer_write.c	2025-12-02 22:43:49.678662799 +0100
@@ -1,7 +1,7 @@
 #include <unistd.h>
 #include "buffer.h"
 
-int buffer_unixwrite(int fd,const char *buf,unsigned int len)
+ssize_t buffer_unixwrite(int fd, const void *buf, size_t len)
 {
-  return write(fd,buf,len);
+  return write(fd,(const char *)buf,len);
 }
diff '--color=auto' -Nur djbdns-1.05~/byte_chr.c djbdns-1.05/byte_chr.c
--- djbdns-1.05~/byte_chr.c	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/byte_chr.c	2025-12-02 22:43:49.678749499 +0100
@@ -1,12 +1,9 @@
 #include "byte.h"
 
-unsigned int byte_chr(s,n,c)
-char *s;
-register unsigned int n;
-int c;
+unsigned int byte_chr(const char *s, register size_t n, int c)
 {
   register char ch;
-  register char *t;
+  register const char *t;
 
   ch = c;
   t = s;
diff '--color=auto' -Nur djbdns-1.05~/byte_copy.c djbdns-1.05/byte_copy.c
--- djbdns-1.05~/byte_copy.c	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/byte_copy.c	2025-12-02 22:43:49.678836184 +0100
@@ -1,10 +1,10 @@
 #include "byte.h"
 
-void byte_copy(to,n,from)
-register char *to;
-register unsigned int n;
-register char *from;
+void byte_copy(void *to_, register size_t n, const void *from_)
 {
+  register char *to = to_;
+  register const char *from = from_;
+
   for (;;) {
     if (!n) return; *to++ = *from++; --n;
     if (!n) return; *to++ = *from++; --n;
diff '--color=auto' -Nur djbdns-1.05~/byte_cr.c djbdns-1.05/byte_cr.c
--- djbdns-1.05~/byte_cr.c	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/byte_cr.c	2025-12-02 22:43:49.678921918 +0100
@@ -1,10 +1,10 @@
 #include "byte.h"
 
-void byte_copyr(to,n,from)
-register char *to;
-register unsigned int n;
-register char *from;
+void byte_copyr(void *to_, register size_t n, const void *from_)
 {
+  register char *to = to_;
+  register const char *from = from_;
+
   to += n;
   from += n;
   for (;;) {
diff '--color=auto' -Nur djbdns-1.05~/byte_diff.c djbdns-1.05/byte_diff.c
--- djbdns-1.05~/byte_diff.c	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/byte_diff.c	2025-12-02 22:43:49.679006562 +0100
@@ -1,9 +1,6 @@
 #include "byte.h"
 
-int byte_diff(s,n,t)
-register char *s;
-register unsigned int n;
-register char *t;
+int byte_diff(register const unsigned char *s, register size_t n, register const unsigned char *t)
 {
   for (;;) {
     if (!n) return 0; if (*s != *t) break; ++s; ++t; --n;
diff '--color=auto' -Nur djbdns-1.05~/byte.h djbdns-1.05/byte.h
--- djbdns-1.05~/byte.h	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/byte.h	2025-12-02 22:43:49.679094828 +0100
@@ -1,12 +1,13 @@
+#include <stddef.h>
+
 #ifndef BYTE_H
 #define BYTE_H
 
-extern unsigned int byte_chr();
-extern unsigned int byte_rchr();
-extern void byte_copy();
-extern void byte_copyr();
-extern int byte_diff();
-extern void byte_zero();
+extern unsigned int byte_chr(const char *, register size_t, int);
+extern void byte_copy(void *, register size_t, const void *);
+extern void byte_copyr(void *, register size_t, const void *);
+extern int byte_diff(register const unsigned char *, register size_t, register const unsigned char *);
+extern void byte_zero(void *, register size_t);
 
 #define byte_equal(s,n,t) (!byte_diff((s),(n),(t)))
 
diff '--color=auto' -Nur djbdns-1.05~/byte_zero.c djbdns-1.05/byte_zero.c
--- djbdns-1.05~/byte_zero.c	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/byte_zero.c	2025-12-02 22:43:49.679184094 +0100
@@ -1,9 +1,8 @@
 #include "byte.h"
 
-void byte_zero(s,n)
-char *s;
-register unsigned int n;
+void byte_zero(void *s_, register size_t n)
 {
+  char *s = s_;
   for (;;) {
     if (!n) break; *s++ = 0; --n;
     if (!n) break; *s++ = 0; --n;
diff '--color=auto' -Nur djbdns-1.05~/cdb_make.c djbdns-1.05/cdb_make.c
--- djbdns-1.05~/cdb_make.c	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/cdb_make.c	2025-12-02 22:43:49.679283267 +0100
@@ -14,7 +14,7 @@
   c->numentries = 0;
   c->fd = fd;
   c->pos = sizeof c->final;
-  buffer_init(&c->b,buffer_unixwrite,fd,c->bspace,sizeof c->bspace);
+  buffer_init(&c->b,(buffer_op)buffer_unixwrite,fd,c->bspace,sizeof c->bspace);
   return seek_set(fd,c->pos);
 }
 
diff '--color=auto' -Nur djbdns-1.05~/dnscache.c djbdns-1.05/dnscache.c
--- djbdns-1.05~/dnscache.c	2025-12-02 22:43:37.146897195 +0100
+++ djbdns-1.05/dnscache.c	2025-12-02 22:43:49.679393606 +0100
@@ -52,7 +52,7 @@
 static char buf[1024];
 uint64 numqueries = 0;
 
-static unsigned int truncate_len = 512;
+static unsigned long truncate_len = 512;
 
 static int udp53;
 
@@ -414,7 +414,7 @@
   socket_tryreservein(udp53,131072);
 
   byte_zero(seed,sizeof seed);
-  read(0,seed,sizeof seed);
+  (void)read(0,seed,sizeof seed);
   dns_random_init(seed);
   close(0);
 
diff '--color=auto' -Nur djbdns-1.05~/exit.h djbdns-1.05/exit.h
--- djbdns-1.05~/exit.h	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/exit.h	2025-12-02 22:43:49.679506642 +0100
@@ -1,6 +1,6 @@
 #ifndef EXIT_H
 #define EXIT_H
 
-extern void _exit();
+#include <unistd.h>
 
 #endif
diff '--color=auto' -Nur djbdns-1.05~/FILES djbdns-1.05/FILES
--- djbdns-1.05~/FILES	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/FILES	2025-12-02 22:43:49.679599711 +0100
@@ -225,7 +225,6 @@
 trydrent.c
 trylsock.c
 trypoll.c
-tryshsgr.c
 trysysel.c
 tryulong32.c
 tryulong64.c
diff '--color=auto' -Nur djbdns-1.05~/generic-conf.c djbdns-1.05/generic-conf.c
--- djbdns-1.05~/generic-conf.c	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/generic-conf.c	2025-12-02 22:43:49.679685284 +0100
@@ -43,7 +43,7 @@
   fn = s;
   fd = open_trunc(fn);
   if (fd == -1) fail();
-  buffer_init(&ss,buffer_unixwrite,fd,buf,sizeof buf);
+  buffer_init(&ss,(buffer_op)buffer_unixwrite,fd,buf,sizeof buf);
 }
 
 void outs(const char *s)
diff '--color=auto' -Nur djbdns-1.05~/hasshsgr.h1 djbdns-1.05/hasshsgr.h1
--- djbdns-1.05~/hasshsgr.h1	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/hasshsgr.h1	1970-01-01 01:00:00.000000000 +0100
@@ -1 +0,0 @@
-/* sysdep: -shortsetgroups */
diff '--color=auto' -Nur djbdns-1.05~/hasshsgr.h2 djbdns-1.05/hasshsgr.h2
--- djbdns-1.05~/hasshsgr.h2	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/hasshsgr.h2	1970-01-01 01:00:00.000000000 +0100
@@ -1,2 +0,0 @@
-/* sysdep: +shortsetgroups */
-#define HASSHORTSETGROUPS 1
diff '--color=auto' -Nur djbdns-1.05~/hier.c djbdns-1.05/hier.c
--- djbdns-1.05~/hier.c	2025-12-02 22:43:37.135670301 +0100
+++ djbdns-1.05/hier.c	2025-12-02 22:43:49.679872041 +0100
@@ -1,9 +1,11 @@
+#include <unistd.h>
+#include <sys/types.h>
 #include "auto_home.h"
 
 /* implemented in install.c and/or instcheck.c */
-void c(char*, char*, char*, int, int, int);
-void h(char*, int, int, int);
-void d(char*, char*, int, int, int);
+void c(const char*, const char*, const char*, uid_t, gid_t, mode_t);
+void h(const char*, uid_t, gid_t, mode_t);
+void d(const char*, const char*, uid_t, gid_t, mode_t);
 
 
 void hier()
diff '--color=auto' -Nur djbdns-1.05~/install.c djbdns-1.05/install.c
--- djbdns-1.05~/install.c	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/install.c	2025-12-02 22:43:49.680010735 +0100
@@ -13,11 +13,7 @@
 
 int fdsourcedir = -1;
 
-void h(home,uid,gid,mode)
-char *home;
-int uid;
-int gid;
-int mode;
+void h(const char *home, uid_t uid, gid_t gid, mode_t mode)
 {
   if (mkdir(home,0700) == -1)
     if (errno != error_exist)
@@ -28,12 +24,7 @@
     strerr_die4sys(111,FATAL,"unable to chmod ",home,": ");
 }
 
-void d(home,subdir,uid,gid,mode)
-char *home;
-char *subdir;
-int uid;
-int gid;
-int mode;
+void d(const char *home, const char *subdir, uid_t uid, gid_t gid, mode_t mode)
 {
   if (chdir(home) == -1)
     strerr_die4sys(111,FATAL,"unable to switch to ",home,": ");
@@ -51,13 +42,7 @@
 buffer ssin;
 buffer ssout;
 
-void c(home,subdir,file,uid,gid,mode)
-char *home;
-char *subdir;
-char *file;
-int uid;
-int gid;
-int mode;
+void c(const char *home, const char *subdir, const char *file, uid_t uid, gid_t gid, mode_t mode)
 {
   int fdin;
   int fdout;
@@ -78,7 +63,7 @@
   fdout = open_trunc(file);
   if (fdout == -1)
     strerr_die6sys(111,FATAL,"unable to write .../",subdir,"/",file,": ");
-  buffer_init(&ssout,buffer_unixwrite,fdout,outbuf,sizeof outbuf);
+  buffer_init(&ssout,(buffer_op)buffer_unixwrite,fdout,outbuf,sizeof outbuf);
 
   switch(buffer_copy(&ssout,&ssin)) {
     case -2:
@@ -101,14 +86,7 @@
     strerr_die6sys(111,FATAL,"unable to chmod .../",subdir,"/",file,": ");
 }
 
-void z(home,subdir,file,len,uid,gid,mode)
-char *home;
-char *subdir;
-char *file;
-int len;
-int uid;
-int gid;
-int mode;
+void z(const char *home, const char *subdir, const char *file, int len, uid_t uid, gid_t gid, mode_t mode)
 {
   int fdout;
 
@@ -120,7 +98,7 @@
   fdout = open_trunc(file);
   if (fdout == -1)
     strerr_die6sys(111,FATAL,"unable to write .../",subdir,"/",file,": ");
-  buffer_init(&ssout,buffer_unixwrite,fdout,outbuf,sizeof outbuf);
+  buffer_init(&ssout,(buffer_op)buffer_unixwrite,fdout,outbuf,sizeof outbuf);
 
   while (len-- > 0)
     if (buffer_put(&ssout,"",1) == -1)
@@ -139,7 +117,7 @@
     strerr_die6sys(111,FATAL,"unable to chmod .../",subdir,"/",file,": ");
 }
 
-int main()
+int main(void)
 {
   fdsourcedir = open_read(".");
   if (fdsourcedir == -1)
diff '--color=auto' -Nur djbdns-1.05~/instcheck.c djbdns-1.05/instcheck.c
--- djbdns-1.05~/instcheck.c	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/instcheck.c	2025-12-02 22:43:49.680136082 +0100
@@ -10,15 +10,7 @@
 #define FATAL "instcheck: fatal: "
 #define WARNING "instcheck: warning: "
 
-void perm(prefix1,prefix2,prefix3,file,type,uid,gid,mode)
-char *prefix1;
-char *prefix2;
-char *prefix3;
-char *file;
-int type;
-int uid;
-int gid;
-int mode;
+void perm(const char *prefix1, const char *prefix2, const char *prefix3, const char *file, mode_t type, uid_t uid, gid_t gid, mode_t mode)
 {
   struct stat st;
 
@@ -40,46 +32,26 @@
     strerr_warn6(WARNING,prefix1,prefix2,prefix3,file," has wrong type",0);
 }
 
-void h(home,uid,gid,mode)
-char *home;
-int uid;
-int gid;
-int mode;
+void h(const char *home, uid_t uid, gid_t gid, mode_t mode)
 {
   perm("","","",home,S_IFDIR,uid,gid,mode);
 }
 
-void d(home,subdir,uid,gid,mode)
-char *home;
-char *subdir;
-int uid;
-int gid;
-int mode;
+void d(const char *home, const char *subdir, uid_t uid, gid_t gid, mode_t mode)
 {
   if (chdir(home) == -1)
     strerr_die4sys(111,FATAL,"unable to switch to ",home,": ");
   perm("",home,"/",subdir,S_IFDIR,uid,gid,mode);
 }
 
-void p(home,fifo,uid,gid,mode)
-char *home;
-char *fifo;
-int uid;
-int gid;
-int mode;
+void p(const char *home, const char *fifo, uid_t uid, gid_t gid, mode_t mode)
 {
   if (chdir(home) == -1)
     strerr_die4sys(111,FATAL,"unable to switch to ",home,": ");
   perm("",home,"/",fifo,S_IFIFO,uid,gid,mode);
 }
 
-void c(home,subdir,file,uid,gid,mode)
-char *home;
-char *subdir;
-char *file;
-int uid;
-int gid;
-int mode;
+void c(const char *home, const char *subdir, const char *file, uid_t uid, gid_t gid, mode_t mode)
 {
   if (chdir(home) == -1)
     strerr_die4sys(111,FATAL,"unable to switch to ",home,": ");
@@ -88,20 +60,15 @@
   perm(".../",subdir,"/",file,S_IFREG,uid,gid,mode);
 }
 
-void z(home,file,len,uid,gid,mode)
-char *home;
-char *file;
-int len;
-int uid;
-int gid;
-int mode;
+void z(const char *home, const char *file, int len, uid_t uid, gid_t gid, mode_t mode)
 {
+  (void)len;  /* unused */
   if (chdir(home) == -1)
     strerr_die4sys(111,FATAL,"unable to switch to ",home,": ");
   perm("",home,"/",file,S_IFREG,uid,gid,mode);
 }
 
-int main()
+int main(void)
 {
   hier();
   _exit(0);
diff '--color=auto' -Nur djbdns-1.05~/Makefile djbdns-1.05/Makefile
--- djbdns-1.05~/Makefile	2025-12-02 22:43:37.154337056 +0100
+++ djbdns-1.05/Makefile	2025-12-02 22:43:49.680312281 +0100
@@ -510,12 +510,6 @@
 	  *) cat hasdevtcp.h1 ;; \
 	esac ) > hasdevtcp.h
 
-hasshsgr.h: \
-choose compile load tryshsgr.c hasshsgr.h1 hasshsgr.h2 chkshsgr \
-warn-shsgr
-	./chkshsgr || ( cat warn-shsgr; exit 1 )
-	./choose clr tryshsgr hasshsgr.h1 hasshsgr.h2 > hasshsgr.h
-
 hier.o: \
 compile hier.c auto_home.h
 	./compile hier.c
@@ -682,7 +676,7 @@
 dnstrace dnstracesort cachetest utime rts
 
 prot.o: \
-compile prot.c hasshsgr.h prot.h
+compile prot.c prot.h
 	./compile prot.c
 
 qlog.o: \
diff '--color=auto' -Nur djbdns-1.05~/prot.c djbdns-1.05/prot.c
--- djbdns-1.05~/prot.c	2025-12-02 22:43:37.135711312 +0100
+++ djbdns-1.05/prot.c	2025-12-02 22:43:49.680484591 +0100
@@ -1,21 +1,13 @@
 #include <grp.h>
-#include <unistd.h>
-#include "hasshsgr.h"
 #include "prot.h"
 
-int prot_gid(int gid)
+int prot_gid(gid_t gid)
 {
-#ifdef HASSHORTSETGROUPS
-  short x[2];
-  x[0] = gid; x[1] = 73; /* catch errors */
-  if (setgroups(1,x) == -1) return -1;
-#else
   if (setgroups(1,&gid) == -1) return -1;
-#endif
   return setgid(gid); /* _should_ be redundant, but on some systems it isn't */
 }
 
-int prot_uid(int uid)
+int prot_uid(uid_t uid)
 {
   return setuid(uid);
 }
diff '--color=auto' -Nur djbdns-1.05~/prot.h djbdns-1.05/prot.h
--- djbdns-1.05~/prot.h	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/prot.h	2025-12-02 22:43:49.680566680 +0100
@@ -1,7 +1,9 @@
 #ifndef PROT_H
 #define PROT_H
 
-extern int prot_gid(int);
-extern int prot_uid(int);
+#include <unistd.h>
+
+extern int prot_gid(gid_t);
+extern int prot_uid(uid_t);
 
 #endif
diff '--color=auto' -Nur djbdns-1.05~/scan.h djbdns-1.05/scan.h
--- djbdns-1.05~/scan.h	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/scan.h	2025-12-02 22:43:49.680657322 +0100
@@ -1,28 +1,9 @@
+#include <stddef.h>
+
 #ifndef SCAN_H
 #define SCAN_H
 
-extern unsigned int scan_uint(const char *,unsigned int *);
-extern unsigned int scan_xint(const char *,unsigned int *);
-extern unsigned int scan_nbbint(const char *,unsigned int,unsigned int,unsigned int,unsigned int *);
-extern unsigned int scan_ushort(const char *,unsigned short *);
-extern unsigned int scan_xshort(const char *,unsigned short *);
-extern unsigned int scan_nbbshort(const char *,unsigned int,unsigned int,unsigned int,unsigned short *);
-extern unsigned int scan_ulong(const char *,unsigned long *);
-extern unsigned int scan_xlong(const char *,unsigned long *);
-extern unsigned int scan_nbblong(const char *,unsigned int,unsigned int,unsigned int,unsigned long *);
-
-extern unsigned int scan_plusminus(const char *,int *);
-extern unsigned int scan_0x(const char *,unsigned int *);
-
-extern unsigned int scan_whitenskip(const char *,unsigned int);
-extern unsigned int scan_nonwhitenskip(const char *,unsigned int);
-extern unsigned int scan_charsetnskip(const char *,const char *,unsigned int);
-extern unsigned int scan_noncharsetnskip(const char *,const char *,unsigned int);
-
-extern unsigned int scan_strncmp(const char *,const char *,unsigned int);
-extern unsigned int scan_memcmp(const char *,const char *,unsigned int);
-
-extern unsigned int scan_long(const char *,long *);
-extern unsigned int scan_8long(const char *,unsigned long *);
+extern size_t scan_ulong(const char *,unsigned long *);
+extern size_t scan_xlong(const char *,unsigned long *);
 
 #endif
diff '--color=auto' -Nur djbdns-1.05~/scan_ulong.c djbdns-1.05/scan_ulong.c
--- djbdns-1.05~/scan_ulong.c	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/scan_ulong.c	2025-12-02 22:43:49.680737768 +0100
@@ -1,8 +1,8 @@
 #include "scan.h"
 
-unsigned int scan_ulong(register const char *s,register unsigned long *u)
+size_t scan_ulong(register const char *s,register unsigned long *u)
 {
-  register unsigned int pos = 0;
+  register size_t pos = 0;
   register unsigned long result = 0;
   register unsigned long c;
   while ((c = (unsigned long) (unsigned char) (s[pos] - '0')) < 10) {
diff '--color=auto' -Nur djbdns-1.05~/select.h2 djbdns-1.05/select.h2
--- djbdns-1.05~/select.h2	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/select.h2	2025-12-02 22:43:49.680813138 +0100
@@ -6,6 +6,5 @@
 #include <sys/types.h>
 #include <sys/time.h>
 #include <sys/select.h>
-extern int select();
 
 #endif
diff '--color=auto' -Nur djbdns-1.05~/server.c djbdns-1.05/server.c
--- djbdns-1.05~/server.c	2025-12-02 22:43:37.146971624 +0100
+++ djbdns-1.05/server.c	2025-12-02 22:43:49.680899783 +0100
@@ -84,7 +84,7 @@
 {
   char *x;
   int udp53;
-  unsigned int truncate_len = 512;
+  unsigned long truncate_len = 512;
 
   x = env_get("IP");
   if (!x)
diff '--color=auto' -Nur djbdns-1.05~/socket_conn.c djbdns-1.05/socket_conn.c
--- djbdns-1.05~/socket_conn.c	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/socket_conn.c	2025-12-02 22:43:49.680984062 +0100
@@ -26,7 +26,7 @@
 
   dummy = sizeof sa;
   if (getpeername(s,(struct sockaddr *) &sa,&dummy) == -1) {
-    read(s,&ch,1); /* sets errno */
+    (void)read(s,&ch,1); /* sets errno */
     return 0;
   }
   return 1;
diff '--color=auto' -Nur djbdns-1.05~/timeoutread.c djbdns-1.05/timeoutread.c
--- djbdns-1.05~/timeoutread.c	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/timeoutread.c	2025-12-02 22:43:49.681061544 +0100
@@ -3,7 +3,7 @@
 #include "iopause.h"
 #include "timeoutread.h"
 
-int timeoutread(int t,int fd,char *buf,int len)
+ssize_t timeoutread(int t,int fd,char *buf,size_t len)
 {
   struct taia now;
   struct taia deadline;
diff '--color=auto' -Nur djbdns-1.05~/timeoutread.h djbdns-1.05/timeoutread.h
--- djbdns-1.05~/timeoutread.h	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/timeoutread.h	2025-12-02 22:43:49.681137596 +0100
@@ -1,6 +1,6 @@
 #ifndef TIMEOUTREAD_H
 #define TIMEOUTREAD_H
 
-extern int timeoutread();
+extern ssize_t timeoutread(int, int, char *, size_t);
 
 #endif
diff '--color=auto' -Nur djbdns-1.05~/timeoutwrite.c djbdns-1.05/timeoutwrite.c
--- djbdns-1.05~/timeoutwrite.c	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/timeoutwrite.c	2025-12-02 22:43:49.681224643 +0100
@@ -3,7 +3,7 @@
 #include "iopause.h"
 #include "timeoutwrite.h"
 
-int timeoutwrite(int t,int fd,char *buf,int len)
+ssize_t timeoutwrite(int t, int fd, const char *buf, size_t len)
 {
   struct taia now;
   struct taia deadline;
diff '--color=auto' -Nur djbdns-1.05~/timeoutwrite.h djbdns-1.05/timeoutwrite.h
--- djbdns-1.05~/timeoutwrite.h	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/timeoutwrite.h	2025-12-02 22:43:49.681300449 +0100
@@ -1,6 +1,6 @@
 #ifndef TIMEOUTWRITE_H
 #define TIMEOUTWRITE_H
 
-extern int timeoutwrite();
+extern ssize_t timeoutwrite(int, int, const char *, size_t);
 
 #endif
diff '--color=auto' -Nur djbdns-1.05~/tinydns-data.c djbdns-1.05/tinydns-data.c
--- djbdns-1.05~/tinydns-data.c	2025-12-02 22:43:37.114329011 +0100
+++ djbdns-1.05/tinydns-data.c	2025-12-02 22:43:49.681438800 +0100
@@ -181,18 +181,26 @@
   strerr_die4x(111,FATAL,"unable to parse data line ",strnum,why);
 }
 
+static unsigned int scan_u32(const char *s,uint32 *u) {
+  unsigned long l;
+  unsigned int r=scan_ulong(s,&l);
+  if ((uint32)l != l) return 0;
+  if (r) *u=l;
+  return r;
+}
+
 int main()
 {
   int fddata;
-  int i;
-  int j;
+  unsigned int i;
+  unsigned int j;
   int k;
   char ch;
   unsigned long ttl;
   char ttd[8];
   char loc[2];
-  unsigned long u;
-  char ip[4];
+  uint32 u;
+  unsigned char ip[4];
   char type[2];
   char soa[20];
   char buf[4];
@@ -252,19 +260,19 @@
 	if (!dns_domain_fromdot(&d1,f[0].s,f[0].len)) nomem();
 
 	if (!stralloc_0(&f[3])) nomem();
-	if (!scan_ulong(f[3].s,&u)) uint32_unpack_big(defaultsoa,&u);
+	if (!scan_u32(f[3].s,&u)) uint32_unpack_big(defaultsoa,&u);
 	uint32_pack_big(soa,u);
 	if (!stralloc_0(&f[4])) nomem();
-	if (!scan_ulong(f[4].s,&u)) uint32_unpack_big(defaultsoa + 4,&u);
+	if (!scan_u32(f[4].s,&u)) uint32_unpack_big(defaultsoa + 4,&u);
 	uint32_pack_big(soa + 4,u);
 	if (!stralloc_0(&f[5])) nomem();
-	if (!scan_ulong(f[5].s,&u)) uint32_unpack_big(defaultsoa + 8,&u);
+	if (!scan_u32(f[5].s,&u)) uint32_unpack_big(defaultsoa + 8,&u);
 	uint32_pack_big(soa + 8,u);
 	if (!stralloc_0(&f[6])) nomem();
-	if (!scan_ulong(f[6].s,&u)) uint32_unpack_big(defaultsoa + 12,&u);
+	if (!scan_u32(f[6].s,&u)) uint32_unpack_big(defaultsoa + 12,&u);
 	uint32_pack_big(soa + 12,u);
 	if (!stralloc_0(&f[7])) nomem();
-	if (!scan_ulong(f[7].s,&u)) uint32_unpack_big(defaultsoa + 16,&u);
+	if (!scan_u32(f[7].s,&u)) uint32_unpack_big(defaultsoa + 16,&u);
 	uint32_pack_big(soa + 16,u);
 
 	if (!stralloc_0(&f[8])) nomem();
@@ -311,7 +319,7 @@
 
 	if (ip4_scan(f[1].s,ip)) {
 	  rr_start(DNS_T_A,ttl,ttd,loc);
-	  rr_add(ip,4);
+	  rr_add((const char*)ip,4);
 	  rr_finish(d2);
 	}
 
@@ -328,7 +336,7 @@
 
 	if (ip4_scan(f[1].s,ip)) {
 	  rr_start(DNS_T_A,ttl,ttd,loc);
-	  rr_add(ip,4);
+	  rr_add((const char*)ip,4);
 	  rr_finish(d1);
 
 	  if (line.s[0] == '=') {
@@ -356,7 +364,7 @@
 	if (!dns_domain_fromdot(&d2,f[2].s,f[2].len)) nomem();
 
 	if (!stralloc_0(&f[3])) nomem();
-	if (!scan_ulong(f[3].s,&u)) u = 0;
+	if (!scan_u32(f[3].s,&u)) u = 0;
 
 	rr_start(DNS_T_MX,ttl,ttd,loc);
 	uint16_pack_big(buf,u);
@@ -366,7 +374,7 @@
 
 	if (ip4_scan(f[1].s,ip)) {
 	  rr_start(DNS_T_A,ttl,ttd,loc);
-	  rr_add(ip,4);
+	  rr_add((const char*)ip,4);
 	  rr_finish(d2);
 	}
 	break;
@@ -387,13 +395,13 @@
 	if (!dns_domain_fromdot(&d2,f[2].s,f[2].len)) nomem();
 
 	if (!stralloc_0(&f[4])) nomem();
-	if (!scan_ulong(f[4].s,&u)) u = 0;
+	if (!scan_u32(f[4].s,&u)) u = 0;
 	uint16_pack_big(srv,u);
 	if (!stralloc_0(&f[5])) nomem();
-	if (!scan_ulong(f[5].s,&u)) u = 0;
+	if (!scan_u32(f[5].s,&u)) u = 0;
 	uint16_pack_big(srv + 2,u);
 	if (!stralloc_0(&f[3])) nomem();
-	if (!scan_ulong(f[3].s,&u)) nomem();
+	if (!scan_u32(f[3].s,&u)) nomem();
 	uint16_pack_big(srv + 4,u);
 
 	rr_start(DNS_T_SRV,ttl,ttd,loc);
@@ -455,7 +463,7 @@
 	locparse(&f[5],loc);
 
 	if (!stralloc_0(&f[1])) nomem();
-	scan_ulong(f[1].s,&u);
+	scan_u32(f[1].s,&u);
 	uint16_pack_big(type,u);
 	if (byte_equal(type,2,DNS_T_AXFR))
 	  syntaxerror(": type AXFR prohibited");
diff '--color=auto' -Nur djbdns-1.05~/tinydns-edit.c djbdns-1.05/tinydns-edit.c
--- djbdns-1.05~/tinydns-edit.c	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/tinydns-edit.c	2025-12-02 22:43:49.681607275 +0100
@@ -116,7 +116,7 @@
   fdnew = open_trunc(fnnew);
   if (fdnew == -1) die_write();
   if (fchmod(fdnew,st.st_mode & 0644) == -1) die_write();
-  buffer_init(&bnew,buffer_unixwrite,fdnew,bnewspace,sizeof bnewspace);
+  buffer_init(&bnew,(buffer_op)buffer_unixwrite,fdnew,bnewspace,sizeof bnewspace);
 
   switch(mode) {
     case '.': case '&':
diff '--color=auto' -Nur djbdns-1.05~/tryshsgr.c djbdns-1.05/tryshsgr.c
--- djbdns-1.05~/tryshsgr.c	2001-02-11 22:11:45.000000000 +0100
+++ djbdns-1.05/tryshsgr.c	1970-01-01 01:00:00.000000000 +0100
@@ -1,14 +0,0 @@
-int main()
-{
-  short x[4];
- 
-  x[0] = x[1] = 1;
-  if (getgroups(1,x) == 0) if (setgroups(1,x) == -1) _exit(1);
- 
-  if (getgroups(1,x) == -1) _exit(1);
-  if (x[1] != 1) _exit(1);
-  x[1] = 2;
-  if (getgroups(1,x) == -1) _exit(1);
-  if (x[1] != 2) _exit(1);
-  _exit(0);
-}
diff '--color=auto' -Nur djbdns-1.05~/utime.c djbdns-1.05/utime.c
--- djbdns-1.05~/utime.c	2025-12-02 22:43:37.135798404 +0100
+++ djbdns-1.05/utime.c	2025-12-02 22:44:19.625306556 +0100
@@ -8,10 +8,11 @@
 
 char *ustr;
 unsigned long u;
-time_t ut[2];
+struct utimbuf ut;
 
 int main(int argc,char **argv)
 {
+  (void)argc;  /* unused */
   fn = argv[1];
   if (!fn) _exit(100);
 
@@ -19,7 +20,7 @@
   if (!ustr) _exit(100);
   scan_ulong(ustr,&u);
 
-  ut[0] = ut[1] = u;
-  if (utime(fn,ut) == -1) _exit(111);
+  ut.actime = ut.modtime = u;
+  if (utime(fn,&ut) == -1) _exit(111);
   _exit(0);
 }