From 6a1b0b342c9e9c94f36a27550ea1ba8aee1c8ed8 Mon Sep 17 00:00:00 2001
From: whitequark <whitequark@whitequark.org>
Date: Sun, 2 Aug 2015 05:49:15 +0300
Subject: [PATCH] libdyld: handle existing but undefined symbols during lookup.

---
 software/libdyld/dyld.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/software/libdyld/dyld.c b/software/libdyld/dyld.c
index 112f2e04..da531b6d 100644
--- a/software/libdyld/dyld.c
+++ b/software/libdyld/dyld.c
@@ -171,5 +171,9 @@ void *dyld_lookup(const char *symbol, struct dyld_info *info) {
         index = info->hash.chain[index];
     }
 
-    return (void*)(info->base + info->symtab[index].st_value);
+    Elf32_Addr value = info->symtab[index].st_value;
+    if(value != 0)
+        return (void*)(info->base + value);
+    else
+        return NULL;
 }
-- 
2.30.2