retain symbol strings
--- MacRuby/trunk/parse.y 2008-04-22 01:04:23 UTC (rev 160)
+++ MacRuby/trunk/parse.y 2008-04-22 21:16:39 UTC (rev 161)
@@ -8958,7 +8958,7 @@
0, NULL, NULL);
GC_ROOT(&global_symbols.sym_id);
global_symbols.id_str = CFDictionaryCreateMutable(NULL,
- 0, NULL, NULL);
+ 0, NULL, &kCFTypeDictionaryValueCallBacks);
GC_ROOT(&global_symbols.id_str);
global_symbols.op_sym = xmalloc(sizeof(VALUE) * tLAST_TOKEN);
GC_ROOT(&global_symbols.op_sym);