Fixed assertion in first

[cascardo/grammar.git] / first.c

diff --git a/first.c b/first.c
index 040a04c..0b25ecb 100644 (file)
--- a/first.c
+++ b/first.c
@@ -372,12 +372,10 @@ void first_iterate (gpointer key, gpointer val, gpointer data)
                              first_set->has_empty = TRUE;
                              rule_delete (next_rule);
                            }
-                         else
+                         else if (next_symbol->terminal == FALSE)
                            {
                              symbol_t* next_symbol;
                              next_symbol = next_symbols->data;
-                             /* TODO: Check this assertion is correct. */
-                             assert (next_symbol->terminal == FALSE);
                              /* This is an indirect recursive rule. */
                              if (next_symbol->value == symbol->value)
                                {
@@ -392,6 +390,10 @@ void first_iterate (gpointer key, gpointer val, gpointer data)
                                  new_rules = g_list_prepend (new_rules, next_rule);
                                }
                            }
+                         else
+                           {
+                             rule_delete (next_rule);
+                           }
                          next_rules = g_list_next (next_rules);
                        }
                    }