casereader: Make parameter to casereader_count_cases const.

[pspp-builds.git] / src / data / casereader.h

diff --git a/src/data/casereader.h b/src/data/casereader.h
index a78afaeb27096974107ff1b17409e43318929e37..f2231e2d88984576e39e712427d3dfa4e530f889 100644 (file)
--- a/src/data/casereader.h
+++ b/src/data/casereader.h
@@ -77,7 +77,7 @@ void casereader_force_error (struct casereader *);
 const struct taint *casereader_get_taint (const struct casereader *);
 
 casenumber casereader_get_case_cnt (struct casereader *);
-casenumber casereader_count_cases (struct casereader *);
+casenumber casereader_count_cases (const struct casereader *);
 void casereader_truncate (struct casereader *, casenumber);
 const struct caseproto *casereader_get_proto (const struct casereader *);