From 39ce03094edb3bc53ad671636355be53564a222d Mon Sep 17 00:00:00 2001
From: Richard Carlsson <richardc@klarna.com>
Date: Tue, 14 Apr 2015 15:16:25 +0200
Subject: Gracefully handle empty md5 field in module_info

---
 erts/emulator/beam/beam_load.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'erts')

diff --git a/erts/emulator/beam/beam_load.c b/erts/emulator/beam/beam_load.c
index 282aa71109..29d4dce3e2 100644
--- a/erts/emulator/beam/beam_load.c
+++ b/erts/emulator/beam/beam_load.c
@@ -5695,7 +5695,11 @@ md5_of_module(Process* p, /* Process whose heap to use. */
 	return THE_NON_VALUE;
     }
     code = modp->curr.code;
-    res = new_binary(p, (byte *) code[MI_MD5_PTR], MD5_SIZE);
+    if (code[MI_MD5_PTR] != 0) {
+      res = new_binary(p, (byte *) code[MI_MD5_PTR], MD5_SIZE);
+    } else {
+      res = am_undefined;
+    }
     return res;
 }
 
-- 
cgit v1.2.3