X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=src%2Fmath%2Finteraction.c;h=269aa7e9ad9af816a56b5c95d2fc4ce9ea90dbf7;hb=refs%2Fbuilds%2F20111129030502%2Fpspp;hp=746cc17fa1bcd72acaf0359a7824f1c214705c49;hpb=56f06878e2a9a111f8415ce4ad839b3fe68b85ec;p=pspp

diff --git a/src/math/interaction.c b/src/math/interaction.c
index 746cc17fa1..269aa7e9ad 100644
--- a/src/math/interaction.c
+++ b/src/math/interaction.c
@@ -155,10 +155,10 @@ interaction_to_string (const struct interaction *iact, struct string *str)
 }
 
 unsigned int
-interaction_case_hash (const struct interaction *iact, const struct ccase *c)
+interaction_case_hash (const struct interaction *iact, const struct ccase *c, unsigned int base)
 {
   int i;
-  size_t hash = 0;
+  size_t hash = base;
   for (i = 0; i < iact->n_vars; ++i)
     {
       const struct variable *var = iact->vars[i];