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* objalloc.h (OBJALLOC_ALIGN): Define using offsetof.

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From-SVN: r45677
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Alan Modra 2001-09-18 13:39:40 +00:00 committed by Alan Modra
parent d71ebc326b
commit b9bc4bf6de
2 changed files with 9 additions and 6 deletions
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4
include/ChangeLog
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@ -1,3 +1,7 @@
2001-09-18 Alan Modra <amodra@bigpond.net.au>
* objalloc.h (OBJALLOC_ALIGN): Define using offsetof.
2001-09-17 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
* libiberty.h (concat_length, concat_copy, concat_copy2,

11
include/objalloc.h
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@ -1,5 +1,5 @@
/* objalloc.h -- routines to allocate memory for objects
Copyright 1997 Free Software Foundation, Inc.
Copyright 1997, 2001 Free Software Foundation, Inc.
Written by Ian Lance Taylor, Cygnus Solutions.
This program is free software; you can redistribute it and/or modify it
@ -56,12 +56,11 @@ struct objalloc_align { char x; double d; };
#ifndef offsetof
#include <stddef.h>
#endif
#define OBJALLOC_ALIGN \
((ptrdiff_t) ((char *) &((struct objalloc_align *) 0)->d - (char *) 0))
#else
#define OBJALLOC_ALIGN \
((long) ((char *) &((struct objalloc_align *) 0)->d - (char *) 0))
#endif
#ifndef offsetof
#define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER)
#endif
#define OBJALLOC_ALIGN offsetof (struct objalloc_align, d)
/* Create an objalloc structure. Returns NULL if malloc fails. */