replace some hash table usage by tuples

Previously I used hash tables, which consume too much memory.  Now the
critical parts are replaced by a new hand-written library called
"tuple.h".  Now we can easily parse larger inputs.  I haven't tested
its limits, though.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/grammar.c b/src/grammar.c
index 5ed0b96..0b2be8d 100644
--- a/src/grammar.c
+++ b/src/grammar.c
@@ -222,7 +222,7 @@ build_grammar(Grammar *g, const List *rules,
               CC_MOD(List *) names, CC_MOD(List *) predicates)
 {
   g->names = (List *) names;
-  g->predicates = predicates;
+  g->predicates = (List *) predicates;
 
   NUM len = list_length(names);
   NUM rule_len = list_length(rules);