Make sure vsnprintf() exists before using it. Add fallbacks.

diff --git a/libraries/liblutil/setproctitle.c b/libraries/liblutil/setproctitle.c
index 8c5ed0700c30d896ff7dc7a481b09d4f1802c7dc..b2a590b6121f9d9b83ae75c188ec9ac7bc619912 100644 (file)
--- a/libraries/liblutil/setproctitle.c
+++ b/libraries/liblutil/setproctitle.c
@@ -54,8 +54,15 @@ va_dcl
        va_start(ap);
 #endif
 
+#ifdef HAVE_VSNPRINTF
        buf[sizeof(buf) - 1] = '\0';
        vsnprintf( buf, sizeof(buf)-1, fmt, ap );
+#elif HAVE_VPRINTF
+       vsprintf( buf, fmt, ap ); /* hope it's not too long */
+#else
+       /* use doprnt() */
+       chokeme = "choke me!  I don't have a doprnt() manual handy";
+#endif
 
        va_end(ap);