# HG changeset patch
# User Bruno Haible <bruno@clisp.org>
# Date 1242177449 -7200
# Node ID 18a6ae3e0516181fe3fac7f336fb3a9272ce22fb
# Parent  1c79166ed6a43d2460560ab810afe8b26ec7c755
Revert "Use module 'alignof'." commit.

diff --git a/ChangeLog b/ChangeLog
--- a/ChangeLog
+++ b/ChangeLog
@@ -54,12 +54,6 @@
 
 2009-05-08  Bruno Haible  <bruno@clisp.org>
 
-	Use module 'alignof'.
-	* lib/malloca.h: Include alignof.h.
-	(sa_alignof): Remove macro.
-	(sa_alignment_*): Use the alignof macro.
-	* modules/malloca (Depends-on): Add alignof.
-
 	New module 'alignof'.
 	* lib/alignof.h: New file.
 	* modules/alignof: New file.
diff --git a/lib/malloca.h b/lib/malloca.h
--- a/lib/malloca.h
+++ b/lib/malloca.h
@@ -1,5 +1,5 @@
 /* Safe automatic memory allocation.
-   Copyright (C) 2003-2007, 2009 Free Software Foundation, Inc.
+   Copyright (C) 2003-2007 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2003.
 
    This program is free software; you can redistribute it and/or modify
@@ -23,8 +23,6 @@
 #include <stddef.h>
 #include <stdlib.h>
 
-#include "alignof.h"
-
 
 #ifdef __cplusplus
 extern "C" {
@@ -94,16 +92,34 @@
 
 /* ------------------- Auxiliary, non-public definitions ------------------- */
 
+/* Determine the alignment of a type at compile time.  */
+#if defined __GNUC__
+# define sa_alignof __alignof__
+#elif defined __cplusplus
+  template <class type> struct sa_alignof_helper { char __slot1; type __slot2; };
+# define sa_alignof(type) offsetof (sa_alignof_helper<type>, __slot2)
+#elif defined __hpux
+  /* Work around a HP-UX 10.20 cc bug with enums constants defined as offsetof
+     values.  */
+# define sa_alignof(type) (sizeof (type) <= 4 ? 4 : 8)
+#elif defined _AIX
+  /* Work around an AIX 3.2.5 xlc bug with enums constants defined as offsetof
+     values.  */
+# define sa_alignof(type) (sizeof (type) <= 4 ? 4 : 8)
+#else
+# define sa_alignof(type) offsetof (struct { char __slot1; type __slot2; }, __slot2)
+#endif
+
 enum
 {
 /* The desired alignment of memory allocations is the maximum alignment
    among all elementary types.  */
-  sa_alignment_long = alignof (long),
-  sa_alignment_double = alignof (double),
+  sa_alignment_long = sa_alignof (long),
+  sa_alignment_double = sa_alignof (double),
 #if HAVE_LONG_LONG_INT
-  sa_alignment_longlong = alignof (long long),
+  sa_alignment_longlong = sa_alignof (long long),
 #endif
-  sa_alignment_longdouble = alignof (long double),
+  sa_alignment_longdouble = sa_alignof (long double),
   sa_alignment_max = ((sa_alignment_long - 1) | (sa_alignment_double - 1)
 #if HAVE_LONG_LONG_INT
 		      | (sa_alignment_longlong - 1)
diff --git a/modules/malloca b/modules/malloca
--- a/modules/malloca
+++ b/modules/malloca
@@ -10,7 +10,6 @@
 m4/longlong.m4
 
 Depends-on:
-alignof
 alloca-opt
 
 configure.ac: