* acheaders.m4 (_AC_CHECK_HEADER_DIRENT): Instead of defining

an unused pointer use cast to this type and `if' statement to
avoid warnings from the compiler.
(AC_HEADER_TIME): Likewise.
* actypes.m4 (AC_CHECK_MEMBER): s/foo/ac_aggr/. Use the member
in `if' statement to avoid warnings from the compiler. Declare
ac_aggr static to avoid the need to initialize it.

diff --git a/ChangeLog b/ChangeLog
index d35524729dee0ede3247e78b2da563c02173b151..0a6a9428e8ccd46dcca482f038ea5f006409e2d8 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+2001-06-15  Pavel Roskin  <proski@gnu.org>
+
+       * acheaders.m4 (_AC_CHECK_HEADER_DIRENT): Instead of defining
+       an unused pointer use cast to this type and `if' statement to
+       avoid warnings from the compiler.
+       (AC_HEADER_TIME): Likewise.
+       * actypes.m4 (AC_CHECK_MEMBER): s/foo/ac_aggr/. Use the member
+       in `if' statement to avoid warnings from the compiler. Declare
+       ac_aggr static to avoid the need to initialize it.
+
 2001-06-14  Akim Demaille  <akim@epita.fr>
 
        * doc/autoconf.texi (Portable Shell): Move after `Writing Macros'.

diff --git a/acheaders.m4 b/acheaders.m4
index 17287581b13ca25a320fa075a2fb0f26194b4140..44da612b0a7ba3fd620b4f9f1719481f2191ad65 100644 (file)
--- a/acheaders.m4
+++ b/acheaders.m4
@@ -119,7 +119,8 @@ AC_CACHE_CHECK([for $1 that defines DIR], ac_Header,
 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <sys/types.h>
 #include <$1>
 ],
-                                    [DIR *dirp = 0;])],
+                                    [if ((DIR *) 0)
+return 0;])],
                    [AS_VAR_SET(ac_Header, yes)],
                    [AS_VAR_SET(ac_Header, no)])])
 AS_IF([test AS_VAR_GET(ac_Header) = yes], [$2], [$3])[]dnl
@@ -310,7 +311,8 @@ AC_DEFUN([AC_HEADER_TIME],
 #include <sys/time.h>
 #include <time.h>
 ],
-[struct tm *tp;])],
+[if ((struct tm *) 0)
+return 0;])],
                    [ac_cv_header_time=yes],
                    [ac_cv_header_time=no])])
 if test $ac_cv_header_time = yes; then

diff --git a/actypes.m4 b/actypes.m4
index 4762f6cfcc16cc303a396eed128665f42d989730..d2b2c20c903d97dedbee2eee447bb11e80ce5d2c 100644 (file)
--- a/actypes.m4
+++ b/actypes.m4
@@ -423,10 +423,11 @@ AS_VAR_PUSHDEF([ac_Member], [ac_cv_member_$1])dnl
 dnl Extract the aggregate name, and the member name
 AC_CACHE_CHECK([for $1], ac_Member,
 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT([$4])],
-[dnl AGGREGATE foo;
-m4_patsubst([$1], [\..*]) foo;
-dnl foo.MEMBER;
-foo.m4_patsubst([$1], [^[^.]*\.]);])],
+[dnl AGGREGATE ac_aggr;
+static m4_patsubst([$1], [\..*]) ac_aggr;
+dnl ac_aggr.MEMBER;
+if (ac_aggr.m4_patsubst([$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

diff --git a/lib/autoconf/headers.m4 b/lib/autoconf/headers.m4
index 17287581b13ca25a320fa075a2fb0f26194b4140..44da612b0a7ba3fd620b4f9f1719481f2191ad65 100644 (file)
--- a/lib/autoconf/headers.m4
+++ b/lib/autoconf/headers.m4
@@ -119,7 +119,8 @@ AC_CACHE_CHECK([for $1 that defines DIR], ac_Header,
 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <sys/types.h>
 #include <$1>
 ],
-                                    [DIR *dirp = 0;])],
+                                    [if ((DIR *) 0)
+return 0;])],
                    [AS_VAR_SET(ac_Header, yes)],
                    [AS_VAR_SET(ac_Header, no)])])
 AS_IF([test AS_VAR_GET(ac_Header) = yes], [$2], [$3])[]dnl
@@ -310,7 +311,8 @@ AC_DEFUN([AC_HEADER_TIME],
 #include <sys/time.h>
 #include <time.h>
 ],
-[struct tm *tp;])],
+[if ((struct tm *) 0)
+return 0;])],
                    [ac_cv_header_time=yes],
                    [ac_cv_header_time=no])])
 if test $ac_cv_header_time = yes; then

diff --git a/lib/autoconf/types.m4 b/lib/autoconf/types.m4
index 4762f6cfcc16cc303a396eed128665f42d989730..d2b2c20c903d97dedbee2eee447bb11e80ce5d2c 100644 (file)
--- a/lib/autoconf/types.m4
+++ b/lib/autoconf/types.m4
@@ -423,10 +423,11 @@ AS_VAR_PUSHDEF([ac_Member], [ac_cv_member_$1])dnl
 dnl Extract the aggregate name, and the member name
 AC_CACHE_CHECK([for $1], ac_Member,
 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT([$4])],
-[dnl AGGREGATE foo;
-m4_patsubst([$1], [\..*]) foo;
-dnl foo.MEMBER;
-foo.m4_patsubst([$1], [^[^.]*\.]);])],
+[dnl AGGREGATE ac_aggr;
+static m4_patsubst([$1], [\..*]) ac_aggr;
+dnl ac_aggr.MEMBER;
+if (ac_aggr.m4_patsubst([$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