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Changes to m4/m4/system_.h,v
From: |
Eric Blake |
Subject: |
Changes to m4/m4/system_.h,v |
Date: |
Wed, 25 Oct 2006 12:45:46 +0000 |
CVSROOT: /sources/m4
Module name: m4
Changes by: Eric Blake <ericb> 06/10/25 12:45:45
Index: m4/system_.h
===================================================================
RCS file: /sources/m4/m4/m4/system_.h,v
retrieving revision 1.17
retrieving revision 1.18
diff -u -b -r1.17 -r1.18
--- m4/system_.h 19 Oct 2006 13:38:46 -0000 1.17
+++ m4/system_.h 25 Oct 2006 12:45:45 -0000 1.18
@@ -42,6 +42,14 @@
#include <gnu/xalloc.h>
#include <gnu/xstrndup.h>
+/* glibc's obstack left out the ability to suspend and resume growth
+ of an object on the stack. Reopen OBJECT (previously returned by
+ obstack_alloc or obstack_finish) with SIZE for additional growth,
+ freeing all objects that occur later in the stack. */
+#define obstack_regrow(OBS, OBJECT, SIZE) \
+ (obstack_free (OBS, (char *)(OBJECT) + SIZE), \
+ (OBS)->object_base = (char *)(OBJECT))
+
/* In addition to EXIT_SUCCESS and EXIT_FAILURE, m4 can fail with version
mismatch when trying to load a frozen file produced by a newer m4 than
the version doing the reload. */