[terada@crock 060809]$ diff -u spamc/libspamc.c.save spamc/libspamc.c
--- spamc/libspamc.c.save       2006-07-26 07:02:19.000000000 +0900
+++ spamc/libspamc.c    2006-08-09 18:56:35.000000000 +0900
@@ -1639,23 +1639,30 @@
     va_list ap;
     char buf[LOG_BUFSIZ+1];
     int len = 0;
+    char *spamc_buf="spamc: ";

     va_start(ap, msg);

     if ((flags & SPAMC_LOG_TO_STDERR) != 0) {
         /* create a log-line buffer */
-        len = snprintf(buf, LOG_BUFSIZ, "spamc: ");
-        len += vsnprintf(buf+len, LOG_BUFSIZ-len, msg, ap);
+/*      len = snprintf(buf, LOG_BUFSIZ, "spamc: ");
+        len += vsnprintf(buf+len, LOG_BUFSIZ-len, msg, ap);       */
+        sprintf(buf, "%s", spamc_buf);  len = strlen(spamc_buf);
+        if(strlen(msg)>LOG_BUFSIZ-len) msg[LOG_BUFSIZ-len-1]='\0';
+        sprintf(buf+len, "%s", msg);    len+= strlen(msg);

         /* avoid buffer overflow */
         if (len > (LOG_BUFSIZ-2)) { len = (LOG_BUFSIZ-3); }
+/*      len += snprintf(buf+len, LOG_BUFSIZ-len, "\n");        */
+       sprintf(buf+len, "\n");  len += 1;

-        len += snprintf(buf+len, LOG_BUFSIZ-len, "\n");
         buf[LOG_BUFSIZ] = '\0';     /* ensure termination */
         (void) write (2, buf, len);

     } else {
-        vsnprintf(buf, LOG_BUFSIZ, msg, ap);
+/*      vsnprintf(buf, LOG_BUFSIZ, msg, ap); */
+        if(strlen(msg)>LOG_BUFSIZ) msg[LOG_BUFSIZ-1]='\0';
+        sprintf(buf, "%s", msg);
         buf[LOG_BUFSIZ] = '\0';     /* ensure termination */
 #ifndef _WIN32
         syslog (level, "%s", buf);