X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fdata%2Fprocedure.h;h=35678ce60455caeb710857cd4d512ad4e1b3955a;hb=f70f1b22e925d55c246372376de1c6ffaacf8a4b;hp=76ca6dc88fc3ea9a2125b28c4251765b41bd4a53;hpb=a4ae68f966bc574326d429119878e733069ced14;p=pspp-builds.git

diff --git a/src/data/procedure.h b/src/data/procedure.h
index 76ca6dc8..35678ce6 100644
--- a/src/data/procedure.h
+++ b/src/data/procedure.h
@@ -22,7 +22,9 @@
 
 #include <time.h>
 #include <stdbool.h>
+
 #include <data/transformations.h>
+#include <libpspp/compiler.h>
 
 struct ccase;
 struct casefile;
@@ -62,18 +64,22 @@ bool proc_has_source (void);
 void proc_set_sink (struct case_sink *);
 struct casefile *proc_capture_output (void);
 
-bool procedure (bool (*proc_func) (struct ccase *, void *),
-                void *aux);
+bool procedure (bool (*proc_func) (const struct ccase *, void *),
+                void *aux)
+     WARN_UNUSED_RESULT;
 bool procedure_with_splits (void (*begin_func) (const struct ccase *, void *),
                             bool (*proc_func) (const struct ccase *, void *),
                             void (*end_func) (void *),
-                            void *aux);
+                            void *aux)
+     WARN_UNUSED_RESULT;
 bool multipass_procedure (bool (*proc_func) (const struct casefile *, void *),
-                          void *aux);
+                          void *aux)
+     WARN_UNUSED_RESULT;
 bool multipass_procedure_with_splits (bool (*) (const struct ccase *,
                                                 const struct casefile *,
                                                 void *),
-                                      void *aux);
+                                      void *aux)
+     WARN_UNUSED_RESULT;
 time_t time_of_last_procedure (void);
 
 /* Number of cases to lag. */