diff options
| author | Alan Modra <modra@gmail.com> | 2001-09-18 13:59:28 +0400 |
|---|---|---|
| committer | Alan Modra <modra@gmail.com> | 2001-09-18 13:59:28 +0400 |
| commit | e513b5f9b7d334925d09b7f05477b54719defdd2 (patch) | |
| tree | 36211db8fde1011e6df2cc68839a3e4932f5137f /include/objalloc.h | |
| parent | 4a1dd974542ead59e5b48303ee69c42cc2fdec69 (diff) | |
* objalloc.h (OBJALLOC_ALIGN): Define using offsetof.
Diffstat (limited to 'include/objalloc.h')
| -rw-r--r-- | include/objalloc.h | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/include/objalloc.h b/include/objalloc.h index 0b451cdc2..c7106478d 100644 --- a/include/objalloc.h +++ b/include/objalloc.h @@ -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. */ |