From b3c5295256b43dd753255e0dc0f876d613c19323 Mon Sep 17 00:00:00 2001
From: Sheldon Hearn <sheldonh@FreeBSD.org>
Date: Wed, 22 Dec 1999 17:04:46 +0000
Subject: Document the current behaviour with respect to the handling of errno.

Approved by:	phk
---
 lib/libc/stdlib/malloc.3 | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'lib/libc/stdlib')

diff --git a/lib/libc/stdlib/malloc.3 b/lib/libc/stdlib/malloc.3
index 764bad1033de..f4e75e2f748f 100644
--- a/lib/libc/stdlib/malloc.3
+++ b/lib/libc/stdlib/malloc.3
@@ -264,7 +264,10 @@ The
 and
 .Fn calloc
 functions return a pointer to the allocated memory if successful; otherwise
-a NULL pointer is returned.
+a NULL pointer is returned and
+.Va errno
+is set to
+.Er ENOMEM .
 .Pp
 The
 .Fn realloc
@@ -277,6 +280,10 @@ if successful; otherwise a NULL pointer is returned, in which case the
 memory referenced by
 .Fa ptr
 is still available and intact.
+In the case of memory allocation failure,
+.Va errno
+is set to
+.Er ENOMEM .
 .Pp
 The
 .Fn free
-- 
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