From: Junio C Hamano <junkio@cox.net>
Date: Thu, 29 Dec 2005 09:31:26 +0000 (-0800)
Subject: ?alloc: do not return NULL when asked for zero bytes
X-Git-Tag: v1.0.7^2~23
X-Git-Url: https://git.verplant.org/?a=commitdiff_plain;h=4e7a2eccc21c9029180585e43b3b941d0bdf8b3b;p=git.git

?alloc: do not return NULL when asked for zero bytes

Signed-off-by: Junio C Hamano <junkio@cox.net>
---

diff --git a/git-compat-util.h b/git-compat-util.h
index 0c98c993..c353b276 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -63,6 +63,8 @@ extern char *gitstrcasestr(const char *haystack, const char *needle);
 static inline void *xmalloc(size_t size)
 {
 	void *ret = malloc(size);
+	if (!ret && !size)
+		ret = malloc(1);
 	if (!ret)
 		die("Out of memory, malloc failed");
 	return ret;
@@ -71,6 +73,8 @@ static inline void *xmalloc(size_t size)
 static inline void *xrealloc(void *ptr, size_t size)
 {
 	void *ret = realloc(ptr, size);
+	if (!ret && !size)
+		ret = realloc(ptr, 1);
 	if (!ret)
 		die("Out of memory, realloc failed");
 	return ret;
@@ -79,6 +83,8 @@ static inline void *xrealloc(void *ptr, size_t size)
 static inline void *xcalloc(size_t nmemb, size_t size)
 {
 	void *ret = calloc(nmemb, size);
+	if (!ret && (!nmemb || !size))
+		ret = calloc(1, 1);
 	if (!ret)
 		die("Out of memory, calloc failed");
 	return ret;