Apply by doing:

Apply by doing:
cd "the directory containing your X11 source dir"
patch -p0 < 023_xlock.patch

To recompile and install xlock:

cd X11/xc/programs/xlockmore
xmkmf
make Makefiles
make && make install

Index: X11/xc/programs/xlockmore/xlock/xlock.c
===================================================================
RCS file: /cvs/X11/xc/programs/xlockmore/xlock/xlock.c,v
retrieving revision 1.5
diff -u -r1.5 xlock.c
--- X11/xc/programs/xlockmore/xlock/xlock.c 2000/04/15 09:46:00 1.5
+++ X11/xc/programs/xlockmore/xlock/xlock.c 2000/08/16 13:46:14
@@ -296,13 +296,13 @@

/* Put on the PROGCLASS.background/foreground resources. */
s = (char *) malloc(50);
- (void) strcpy(s, progclass);
- (void) strcat(s, ".background: black");
+ (void) strlcpy(s, progclass, 50);
+ (void) strlcat(s, ".background: black", 50);
defaults[i++] = s;

s = (char *) malloc(50);
- (void) strcpy(s, progclass);
- (void) strcat(s, ".foreground: white");
+ (void) strlcpy(s, progclass, 50);
+ (void) strlcat(s, ".foreground: white", 50);
defaults[i++] = s;

/* Copy the lines out of the `app_defaults' var and into this array. */
@@ -944,7 +944,7 @@
#if defined( HAVE_SYSLOG_H ) && defined( USE_SYSLOG )
extern Display *dsp;

- syslog(SYSLOG_WARNING, buf);
+ syslog(SYSLOG_WARNING, "%s", buf);
if (!nolock) {
if (strstr(buf, "unable to open display") == NULL)
syslogStop(XDisplayString(dsp));
@@ -953,7 +953,7 @@
closelog();
}
#else
- (void) fprintf(stderr, buf);
+ (void) fprintf(stderr, "%s", buf);
#endif
exit(1);
}