diff --git a/ChangeLog b/ChangeLog
index e2aa6630..a94948b4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2006-09-26  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
+
+	* tests/semantics.at (AC_CHECK_MEMBERS): Also test with a struct
+	member.
+
 2006-09-25  Paul Eggert  <eggert@cs.ucla.edu>
 
 	* NEWS: Recommend M4 1.4.7 instead of 1.4.6.
diff --git a/tests/semantics.at b/tests/semantics.at
index 312e6cda..bb94bd27 100644
--- a/tests/semantics.at
+++ b/tests/semantics.at
@@ -234,10 +234,12 @@ AT_CLEANUP([header1.h header2.h header3.h])
 # Check that it performs the correct actions.
 # Must define HAVE_STRUCT_YES_S_YES, but not HAVE_STRUCT_YES_S_NO.
 AT_CHECK_MACRO([AC_CHECK_MEMBERS],
-[[AC_CHECK_MEMBERS([struct yes_s.yes, struct yes_s.no],,,
-		   [struct yes_s { int yes ;} ;])]],
+[[AC_CHECK_MEMBERS([struct yes_s.yes, struct yes_s.no, struct yes_s.substruct],,,
+		   [struct sub { int x; };
+		    struct yes_s { int yes; struct sub substruct; };])]],
 [AT_CHECK_DEFINES(
 [/* #undef HAVE_STRUCT_YES_S_NO */
+#define HAVE_STRUCT_YES_S_SUBSTRUCT 1
 #define HAVE_STRUCT_YES_S_YES 1
 ])])