From 016f0595bb08cb9ddb420f66f5b3dc582be1adcf Mon Sep 17 00:00:00 2001
From: =?utf8?q?Jos=C3=A9=20Fonseca?= <jose.r.fonseca@gmail.com>
Date: Thu, 19 Apr 2012 17:21:23 +0100
Subject: [PATCH] Preserve non-NULL arrays, even when length is zero.

---
 retrace/retrace.hpp | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/retrace/retrace.hpp b/retrace/retrace.hpp
index c1e556a..4ee1a61 100644
--- a/retrace/retrace.hpp
+++ b/retrace/retrace.hpp
@@ -101,9 +101,8 @@ public:
 
     inline void *
     alloc(size_t size) {
-        if (!size) {
-            return NULL;
-        }
+        /* Always return valid address, even when size is zero */
+        size = std::max(size, sizeof(uintptr_t));
 
         uintptr_t * buf = static_cast<uintptr_t *>(malloc(sizeof(uintptr_t) + size));
         if (!buf) {
-- 
2.7.4