Tweak comment.

diff --git a/m4/strndup.m4 b/m4/strndup.m4
index 1d112ae..48b15cc 100644 (file)
--- a/m4/strndup.m4
+++ b/m4/strndup.m4
@@ -13,7 +13,7 @@ AC_DEFUN([gl_FUNC_STRNDUP],
 
   AC_CHECK_DECLS_ONCE([strndup])
 
-  # AIX 5.1 fails to add the terminating '\0'.
+  # AIX 4.3.3, AIX 5.1 have a function that fails to add the terminating '\0'.
   AC_CACHE_CHECK([for working strndup], gl_cv_func_strndup,
     [AC_RUN_IFELSE([
        AC_LANG_PROGRAM([#include <string.h>], [[