prefix warning messages with 'warn:'

diff --git a/lib/art/art_misc.c b/lib/art/art_misc.c
index 1927062..a7e0566 100644 (file)
--- a/lib/art/art_misc.c
+++ b/lib/art/art_misc.c
@@ -56,6 +56,7 @@ art_warn (const char *fmt, ...)
 {
   va_list ap;
 
+  fprintf(stderr, "warn: ");
   va_start (ap, fmt);
   vfprintf (stderr, fmt, ap);
   va_end (ap);