From ac4d5f2514c00820d0beea4f8605f7de6933b4fe Mon Sep 17 00:00:00 2001
From: Tom Ryder <tom@sanctum.geek.nz>
Date: Fri, 25 Mar 2016 02:06:20 +1300
Subject: Add note/warning to mem.c

---
 tests/mem.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/tests/mem.c b/tests/mem.c
index c144bfc..b39e538 100644
--- a/tests/mem.c
+++ b/tests/mem.c
@@ -1,8 +1,15 @@
 #include <signal.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 
-/* mem.c -- Exhaust your memory */
+/**
+ * mem.c -- Exhaust your memory
+ *
+ * This won't do what you expect on Linux if you don't have a ulimit set.
+ * Uncomment the memset(3) call at the end of the loop to fill the pointer if
+ * you really want to actually use the memory. Do you trust your OOM though?
+ */
 int main(void){
     void *ptr = NULL;
     unsigned long mb = 5;
@@ -11,5 +18,6 @@ int main(void){
         if ((ptr = realloc(ptr, mb * 1000000)) == NULL) {
             raise(SIGABRT);
         }
+        /* memset(ptr, 0, mb * 1000000); */
     }
 }
-- 
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