style: use hash_xinsert

* gnulib: Update to get hash_xinsert.
Use it where appropriate.

src/counterexample.c

@@ -680,8 +680,7 @@ ssb_append (search_state *ss)
       search_state_free (ss);
       return;
     }
-  if (!hash_insert (visited, ss))
-    xalloc_die ();
+  hash_xinsert (visited, ss);
   // if states are only referenced by the visited set,
   // their contents should be freed as we only need
   // the metadata necessary to compute a hash.

src/lssi.c

@@ -91,8 +91,7 @@ append_lssi (lssi *sn, Hash_table *visited, gl_list_t queue)
       lssi_free (sn);
       return false;
     }
-  if (!hash_insert (visited, sn))
-    xalloc_die ();
+  hash_xinsert (visited, sn);
   gl_list_add_last (queue, sn);
   return true;
 }

src/muscle-tab.c

@@ -107,8 +107,7 @@ muscle_entry_new (char const *key)
   res->key = key;
   res->value = NULL;
   res->storage = NULL;
-  if (!hash_insert (muscle_table, res))
-    xalloc_die ();
+  hash_xinsert (muscle_table, res);
   return res;
 }
 

src/state-item.c

@@ -82,8 +82,7 @@ hash_pair_insert (Hash_table *tab, int key, bitset val)
   hash_pair *hp = xmalloc (sizeof (hash_pair));
   hp->key = key;
   hp->l = val;
-  if (!hash_insert (tab, hp))
-    xalloc_die ();
+  hash_xinsert (tab, hp);
 }
 
 static void
@@ -211,8 +210,7 @@ init_trans (void)
                            (Hash_comparator) state_sym_comparator, NULL);
       for (int j = 0; j < t->num; ++j)
         if (!TRANSITION_IS_DISABLED (t, j))
-          if (!hash_insert (transition_set, t->states[j]))
-            xalloc_die ();
+          hash_xinsert (transition_set, t->states[j]);
       for (int j = state_item_map[i]; j < state_item_map[i + 1]; ++j)
         {
           item_number *item = state_items[j].item;
@@ -298,11 +296,10 @@ init_prods (void)
               hash_pair *prod_hp = xmalloc (sizeof (hash_pair));
               prod_hp->key = j;
               prod_hp->l = copy;
-              //update prods
-              if (!hash_insert (si_prods, prod_hp))
-                xalloc_die ();
+              // update prods.
+              hash_xinsert (si_prods, prod_hp);
 
-              //update revs
+              // update revs.
               bitset_iterator biter;
               state_item_number prod;
               BITSET_FOR_EACH (biter, copy, prod, 0)

src/state.c

@@ -385,8 +385,7 @@ state_hash_free (void)
 void
 state_hash_insert (state *s)
 {
-  if (!hash_insert (state_table, s))
-    xalloc_die ();
+  hash_xinsert (state_table, s);
 }
 
 

src/symtab.c

@@ -887,17 +887,16 @@ symbol_from_uniqstr (const uniqstr key, location loc)
   symbol probe;
 
   probe.tag = key;
-  symbol *entry = hash_lookup (symbol_table, &probe);
+  symbol *res = hash_lookup (symbol_table, &probe);
 
-  if (!entry)
+  if (!res)
     {
       /* First insertion in the hash. */
       aver (!symbols_sorted);
-      entry = symbol_new (key, loc);
-      if (!hash_insert (symbol_table, entry))
-        xalloc_die ();
+      res = symbol_new (key, loc);
+      hash_xinsert (symbol_table, res);
     }
-  return entry;
+  return res;
 }
 
 
@@ -912,16 +911,15 @@ semantic_type_from_uniqstr (const uniqstr key, const location *loc)
   semantic_type probe;
 
   probe.tag = key;
-  semantic_type *entry = hash_lookup (semantic_type_table, &probe);
+  semantic_type *res = hash_lookup (semantic_type_table, &probe);
 
-  if (!entry)
+  if (!res)
     {
       /* First insertion in the hash. */
-      entry = semantic_type_new (key, loc);
-      if (!hash_insert (semantic_type_table, entry))
-        xalloc_die ();
+      res = semantic_type_new (key, loc);
+      hash_xinsert (semantic_type_table, res);
     }
-  return entry;
+  return res;
 }
 
 

src/uniqstr.c

@@ -50,8 +50,7 @@ uniqstr_new (char const *str)
     {
       /* First insertion in the hash. */
       res = xstrdup (str);
-      if (!hash_insert (uniqstrs_table, res))
-        xalloc_die ();
+      hash_xinsert (uniqstrs_table, res);
     }
   return res;
 }
@@ -81,9 +80,7 @@ uniqstr_concat (int nargs, ...)
   va_end (args);
 
   *p = '\0';
-  uniqstr res = hash_insert (uniqstrs_table, str);
-  if (!res)
-    xalloc_die ();
+  uniqstr res = hash_xinsert (uniqstrs_table, str);
   if (res != str)
     free (str);
   return res;