From 441b64b467e17d62056c3cf7eae9e9a381644db7 Mon Sep 17 00:00:00 2001
From: David Mendenhall <dpmendenhall@gmail.com>
Date: Mon, 20 Apr 2020 15:00:48 -0700
Subject: add NULL check to malloc_usable_size

---
 libdislocator/libdislocator.so.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'libdislocator/libdislocator.so.c')

diff --git a/libdislocator/libdislocator.so.c b/libdislocator/libdislocator.so.c
index 72d280e6..19e84d9f 100644
--- a/libdislocator/libdislocator.so.c
+++ b/libdislocator/libdislocator.so.c
@@ -466,7 +466,7 @@ void *reallocarray(void *ptr, size_t elem_len, size_t elem_cnt) {
 
 size_t malloc_usable_size(void *ptr) {
 
-   return PTR_L(ptr);
+   return ptr ? PTR_L(ptr) : 0;
 
 }
 
-- 
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