An old patch from Dan Lukes <dan at obluda.cz>:

 + Include netinet/in.h for ntohl()
 * Since the return value was tested separately, cast the values to
   size_t in order to shut up compiler warnings.
 + Raise WARNS= level to 6

PR:	bin/71666

2 files changed, 6 insertions, 2 deletions

diff --git a/usr.sbin/btxld/Makefile b/usr.sbin/btxld/Makefile
index 32cf99d..6ca452e 100644
--- a/usr.sbin/btxld/Makefile
+++ b/usr.sbin/btxld/Makefile
@@ -4,4 +4,6 @@ PROG=	btxld
 MAN=	btxld.8
 SRCS=	btxld.c elfh.c
 
+WARNS?=	6
+
 .include <bsd.prog.mk>
diff --git a/usr.sbin/btxld/btxld.c b/usr.sbin/btxld/btxld.c
index 7acf842..f255fa5 100644
--- a/usr.sbin/btxld/btxld.c
+++ b/usr.sbin/btxld/btxld.c
@@ -39,6 +39,8 @@ static const char rcsid[] =
 #undef __LDPGSZ
 #define __LDPGSZ	4096
 
+#include <netinet/in.h>
+
 #include <a.out.h>
 #include <err.h>
 #include <errno.h>
@@ -250,7 +252,7 @@ btxld(const char *iname)
     }
     btx.btx_pgctl -= cwr;
     btx.btx_entry = Eflag ? centry : ihdr.entry;
-    if (snprintf(name, sizeof(name), "%s.tmp", oname) >= sizeof(name))
+    if ((size_t)snprintf(name, sizeof(name), "%s.tmp", oname) >= sizeof(name))
 	errx(2, "%s: Filename too long", oname);
     if ((fdo = open(name, O_CREAT | O_TRUNC | O_WRONLY, 0666)) == -1)
 	err(2, "%s", name);
@@ -480,7 +482,7 @@ writex(int fd, const void *buf, size_t nbyte)
 
     if ((n = write(fd, buf, nbyte)) == -1)
 	err(2, "%s", tname);
-    if (n != nbyte)
+    if ((size_t)n != nbyte)
 	errx(2, "%s: Short write", tname);
 }