From 0982ec01496269c07052881626b11754e578ff07 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Wed, 19 Nov 1997 22:57:20 +0000 Subject: [PATCH] (obstack_empty_p): New definition. --- malloc/obstack.h | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/malloc/obstack.h b/malloc/obstack.h index b60828b6aeb..e7ae6959e54 100644 --- a/malloc/obstack.h +++ b/malloc/obstack.h @@ -104,8 +104,8 @@ Summary: /* Don't do the contents of this file more than once. */ -#ifndef __OBSTACK_H__ -#define __OBSTACK_H__ +#ifndef _OBSTACK_H +#define _OBSTACK_H 1 #ifdef __cplusplus extern "C" { @@ -379,6 +379,11 @@ __extension__ \ _obstack_newchunk (__o, __len); \ (void) 0; }) +#define obstack_empty_p(OBSTACK) \ + __extension__ \ + ({ struct obstack *__o = (OBSTACK); \ + (__o->chunk->prev == 0 && __o->next_free - __o->chunk->contents == 0); }) + #define obstack_grow(OBSTACK,where,length) \ __extension__ \ ({ struct obstack *__o = (OBSTACK); \ @@ -492,6 +497,9 @@ __extension__ \ #define obstack_room(h) \ (unsigned) ((h)->chunk_limit - (h)->next_free) +#define obstack_empty_p(h) \ + ((h)->chunk->prev == 0 && (h)->next_free - (h)->chunk->contents == 0) + /* Note that the call to _obstack_newchunk is enclosed in (..., 0) so that we can avoid having void expressions in the arms of the conditional expression. @@ -587,4 +595,4 @@ __extension__ \ } /* C++ */ #endif -#endif /* not __OBSTACK_H__ */ +#endif /* obstack.h */ -- 2.47.2