From b6ce80fafb54016082f21e46dda4a8d497855198 Mon Sep 17 00:00:00 2001
From: Bruno Haible <bruno@clisp.org>
Date: Fri, 4 Mar 2005 12:28:13 +0000
Subject: [PATCH] Set errno when malloc() fails.

---
 lib/pagealign_alloc.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/pagealign_alloc.c b/lib/pagealign_alloc.c
index 531bd6a56f..848367064d 100644
--- a/lib/pagealign_alloc.c
+++ b/lib/pagealign_alloc.c
@@ -149,7 +149,12 @@ pagealign_alloc (size_t size)
   size_t pagesize = getpagesize ();
   void *unaligned_ptr = malloc (size + pagesize - 1);
   if (unaligned_ptr == NULL)
-    return NULL;
+    {
+      /* Set errno.  We don't know whether malloc already set errno: some
+	 implementations of malloc do, some don't.  */
+      errno = ENOMEM;
+      return NULL;
+    }
   ret = (char *) unaligned_ptr
         + ((- (unsigned long) unaligned_ptr) & (pagesize - 1));
   new_memnode (ret, unaligned_ptr);
-- 
2.30.2