X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fmath%2Fpercentiles.c;h=c76bb492ba767a90ffa2c03c8d35bf8a7d532ab6;hb=95b6394d56fe347634a207f2e65a3ef9cfe05ca8;hp=3aec0c96fdd01514676ef17a7222c959b789da0d;hpb=b46b794dfb9f0758aafec83f50993d1930894099;p=pspp

diff --git a/src/math/percentiles.c b/src/math/percentiles.c
index 3aec0c96fd..c76bb492ba 100644
--- a/src/math/percentiles.c
+++ b/src/math/percentiles.c
@@ -24,6 +24,7 @@
 #define N_(msgid) msgid
 
 #include <libpspp/assertion.h>
+#include <libpspp/cast.h>
 #include <data/val-type.h>
 #include <gl/xalloc.h>
 #include <data/variable.h>
@@ -44,7 +45,7 @@ const char *const ptile_alg_desc[] = {
 double
 percentile_calculate (const struct percentile *ptl, enum pc_alg alg)
 {
-  struct percentile *mutable = (struct percentile *) ptl;
+  struct percentile *mutable = CONST_CAST (struct percentile *, ptl);
   const struct order_stats *os = &ptl->parent;
 
   assert (os->cc == ptl->w);
@@ -154,9 +155,10 @@ percentile_calculate (const struct percentile *ptl, enum pc_alg alg)
 static void
 destroy (struct statistic *stat)
 {
-  struct order_stats *os = (struct order_stats *) stat;
+  struct percentile *ptl = UP_CAST (stat, struct percentile, parent.parent);
+  struct order_stats *os = &ptl->parent;
   free (os->k);
-  free (os);
+  free (ptl);
 }