output-item: Fix memory leak in output_item_dump().

[pspp] / src / math / interaction.h

diff --git a/src/math/interaction.h b/src/math/interaction.h
index ec6f88b03b6dc06571a9413d73843b1bfbea97df..8229083f860f7cf0a7b86e5f4268b9a1551623cf 100644 (file)
--- a/src/math/interaction.h
+++ b/src/math/interaction.h
@@ -19,6 +19,7 @@
 #define _INTERACTION_H__ 1
 
 #include <stdbool.h>
+#include "libpspp/compiler.h"
 #include "data/missing-values.h"
 
 struct ccase;
@@ -60,7 +61,8 @@ bool interaction_is_subset (const struct interaction *,
 
 
 unsigned int interaction_case_hash (const struct interaction *,
-                                    const struct ccase *, unsigned int base);
+                                    const struct ccase *,
+                                   unsigned int base) WARN_UNUSED_RESULT;
 bool interaction_case_equal (const struct interaction *, const struct ccase *,
                              const struct ccase *);
 bool interaction_case_is_missing (const struct interaction *,