Optimize xmalloc, xcalloc, xrealloc, and xstrdup

Add alloc_size attribute and apply consistently the malloc attribute
to xmalloc, xcalloc, xrealloc, and xstrdup.

2 files changed, 8 insertions, 10 deletions

diff --git a/nscd/mem.c b/nscd/mem.c
index fcea6dbd03..8ba2ef6f85 100644
--- a/nscd/mem.c
+++ b/nscd/mem.c
@@ -1,5 +1,5 @@
 /* Cache memory handling.
-   Copyright (C) 2004, 2005, 2006, 2008, 2009 Free Software Foundation, Inc.
+   Copyright (C) 2004-2006, 2008, 2009, 2012 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2004.
 
@@ -35,11 +35,6 @@
 #include "nscd.h"
 
 
-/* Wrapper functions with error checking for standard functions.  */
-extern void *xmalloc (size_t n);
-extern void *xcalloc (size_t n, size_t s);
-
-
 static int
 sort_he (const void *p1, const void *p2)
 {
diff --git a/nscd/nscd.h b/nscd/nscd.h
index fdaf01bfbe..9ac4379b80 100644
--- a/nscd/nscd.h
+++ b/nscd/nscd.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 1998-2001, 2003-2009, 2011 Free Software Foundation, Inc.
+/* Copyright (c) 1998-2001, 2003-2009, 2011, 2012 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Thorsten Kukuk <kukuk@suse.de>, 1998.
 
@@ -201,9 +201,12 @@ extern gid_t old_gid;
 /* Prototypes for global functions.  */
 
 /* Wrapper functions with error checking for standard functions.  */
-extern void *xmalloc (size_t n);
-extern void *xcalloc (size_t n, size_t s);
-extern void *xrealloc (void *o, size_t n);
+extern void *xmalloc (size_t n)
+  __attribute_malloc__ __attribute_alloc_size (1);
+extern void *xcalloc (size_t n, size_t s)
+  __attribute_malloc__ __attribute_alloc_size (1, 2);
+extern void *xrealloc (void *o, size_t n)
+  __attribute_malloc__ __attribute_alloc_size (2);
 
 /* nscd.c */
 extern void termination_handler (int signum) __attribute__ ((__noreturn__));