From: Paul Eggert <eggert@cs.ucla.edu>
Date: Sat, 18 May 2002 00:56:47 +0000 (+0000)
Subject: (AC_CHECK_MEMBER): Work correctly even if the member is itself an
X-Git-Tag: AUTOCONF-2.53b~75
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=970e96bd212c43cdcacc326c1e969d4780cfcd54;p=thirdparty%2Fautoconf.git

(AC_CHECK_MEMBER): Work correctly even if the member is itself an
aggregate.  Bug reported by Sergey Poznyakoff.  This improves on an
earlier suggestion by H. Peter Anvin.
---

diff --git a/lib/autoconf/types.m4 b/lib/autoconf/types.m4
index d58a541fd..e3b6a5328 100644
--- a/lib/autoconf/types.m4
+++ b/lib/autoconf/types.m4
@@ -434,7 +434,14 @@ dnl ac_aggr.MEMBER;
 if (ac_aggr.m4_bpatsubst([$1], [^[^.]*\.]))
 return 0;])],
                 [AS_VAR_SET(ac_Member, yes)],
-                [AS_VAR_SET(ac_Member, no)])])
+[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT([$4])],
+[dnl AGGREGATE ac_aggr;
+static m4_bpatsubst([$1], [\..*]) ac_aggr;
+dnl sizeof ac_aggr.MEMBER;
+if (sizeof ac_aggr.m4_bpatsubst([$1], [^[^.]*\.]))
+return 0;])],
+                [AS_VAR_SET(ac_Member, yes)],
+                [AS_VAR_SET(ac_Member, no)])])])
 AS_IF([test AS_VAR_GET(ac_Member) = yes], [$2], [$3])dnl
 AS_VAR_POPDEF([ac_Member])dnl
 ])# AC_CHECK_MEMBER