nobu	2017-09-05 16:52:08 +0900 (Tue, 05 Sep 2017)

  New Revision: 59748

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=59748

  Log:
    st.c: fix num_entries
    
    * st.c (st_insert2): should manage num_entries when the key is
      undefined, as well as st_insert().

  Modified files:
    trunk/st.c
Index: st.c
===================================================================
--- st.c	(revision 59747)
+++ st.c	(revision 59748)
@@ -1197,6 +1197,8 @@ st_insert2(st_table *tab, st_data_t key, https://github.com/ruby/ruby/blob/trunk/st.c#L1197
     if (tab->bins == NULL) {
         bin = find_entry(tab, hash_value, key);
 	new_p = bin == UNDEFINED_ENTRY_IND;
+	if (new_p)
+	    tab->num_entries++;
 	bin_ind = UNDEFINED_BIN_IND;
     }
     else {

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