From 9263287a3604ab4f8c8cd2ed1dd3dc111dfd6039 Mon Sep 17 00:00:00 2001
From: Jeremy Allison <jra@samba.org>
Date: Sat, 28 Apr 2007 14:33:46 +0000
Subject: r22555: Ensure our paranoid malloc functions return NULL on size == 0
 so we have a known behavior. Jeremy. (This used to be commit
 27c0f2970842a6e07875c5591ded6352acf36a4e)

---
 source3/lib/util.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'source3/lib')

diff --git a/source3/lib/util.c b/source3/lib/util.c
index a9065816cf..1e64db38fc 100644
--- a/source3/lib/util.c
+++ b/source3/lib/util.c
@@ -942,6 +942,9 @@ BOOL yesno(char *p)
 
 void *malloc_(size_t size)
 {
+	if (size == 0) {
+		return NULL;
+	}
 #undef malloc
 	return malloc(size);
 #define malloc(s) __ERROR_DONT_USE_MALLOC_DIRECTLY
@@ -953,6 +956,9 @@ void *malloc_(size_t size)
 
 static void *calloc_(size_t count, size_t size)
 {
+	if (size == 0 || count == 0) {
+		return NULL;
+	}
 #undef calloc
 	return calloc(count, size);
 #define calloc(n,s) __ERROR_DONT_USE_CALLOC_DIRECTLY
@@ -981,6 +987,9 @@ void *malloc_array(size_t el_size, unsigned int count)
 		return NULL;
 	}
 
+	if (el_size == 0 || count == 0) {
+		return NULL;
+	}
 #if defined(PARANOID_MALLOC_CHECKER)
 	return malloc_(el_size*count);
 #else
@@ -1010,6 +1019,9 @@ void *calloc_array(size_t size, size_t nmemb)
 	if (nmemb >= MAX_ALLOC_SIZE/size) {
 		return NULL;
 	}
+	if (size == 0 || nmemb == 0) {
+		return NULL;
+	}
 #if defined(PARANOID_MALLOC_CHECKER)
 	return calloc_(nmemb, size);
 #else
-- 
cgit