st.c: re-calc hash_val before adding

* st.c (st_update): re-calculate hash_val before adding if key was
  changed, otherwise cannot access the newly added element if it
  has different hash value.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46722 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 0 deletions

diff --git a/st.c b/st.c
index 1d78ffebad..117f582703 100644
--- a/st.c
+++ b/st.c
@@ -843,6 +843,7 @@ st_update(st_table *table, st_data_t key, st_update_callback_func *func, st_data
 	    switch (retval) {
 	      case ST_CONTINUE:
 		if (!existing) {
+		    if (key != old_key) hash_val = do_hash(key, table);
 		    add_packed_direct(table, key, value, hash_val);
 		    break;
 		}
@@ -878,6 +879,7 @@ st_update(st_table *table, st_data_t key, st_update_callback_func *func, st_data
 	switch (retval) {
 	  case ST_CONTINUE:
 	    if (!existing) {
+		if (key != old_key) hash_val = do_hash(key, table);
 		add_direct(table, key, value, hash_val, hash_pos(hash_val, table->num_bins));
 		break;
 	    }