Made case_{reader,writer}_class structures const.

[pspp-builds.git] / src / data / casereader-filter.c

diff --git a/src/data/casereader-filter.c b/src/data/casereader-filter.c
index 969bb4fae82f8088d35d88c790ec8d88448b1bea..37e1dc85c828f1908fef2454f3ecad872b9a6d68 100644 (file)
--- a/src/data/casereader-filter.c
+++ b/src/data/casereader-filter.c
@@ -43,7 +43,7 @@ struct casereader_filter
     struct casewriter *exclude; /* Writer that gets filtered cases, or NULL. */
   };
 
-static struct casereader_class casereader_filter_class;
+static const struct casereader_class casereader_filter_class;
 
 /* Creates and returns a casereader whose content is a filtered
    version of the data in SUBREADER.  Only the cases for which
@@ -130,7 +130,7 @@ casereader_filter_destroy (struct casereader *reader, void *filter_)
 }
 
 /* Filtering casereader class. */
-static struct casereader_class casereader_filter_class =
+static const struct casereader_class casereader_filter_class =
   {
     casereader_filter_read,
     casereader_filter_destroy,