From ca083a764f14233dfd7f97436629020901bd23a6 Mon Sep 17 00:00:00 2001
From: Sergei Golubchik <sergii@pisem.net>
Date: Thu, 12 Dec 2013 18:14:14 +0100
Subject: [PATCH] my_addr_resolve: don't resolve unknown addresses to ??:0(??),
 but return an error instead

(better to have an address in the output than ??:0)
---
 mysys/my_addr_resolve.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/mysys/my_addr_resolve.c b/mysys/my_addr_resolve.c
index e5a3a5fe13b..90e6f43f390 100644
--- a/mysys/my_addr_resolve.c
+++ b/mysys/my_addr_resolve.c
@@ -153,6 +153,10 @@ int my_addr_resolve(void *ptr, my_addr_loc *loc)
   while (*s != ':')
     s++;
   *s++= 0;
+
+  if (strcmp(loc->file, "??") == 0)
+    return 1;
+
   loc->line= 0;
   while (isdigit(*s))
     loc->line = loc->line * 10 + (*s++ - '0');