From 5613a3b0d42a89d061df18cd9ae4e1008696572c Mon Sep 17 00:00:00 2001 From: Kaz Kylheku Date: Tue, 20 Jul 2021 23:26:38 -0700 Subject: parse/eval: use weak-both hash tables. This addresses the problem that a4c376979d15323ad729e92e41ba43768e8dc163 tried to fix. * eval.c (eval_init): Make all the top-level binding tables, top_fb, top_vb, top_mb, top_smb, special and builtin, weak-both tables: keys and values are weak. This way, the entries disappear if both key and value are unreachable, even if they refer to each other. (eval_compat_fixup): In 266 or earlier compat mode, weak-both tables don't have the right semantics, so we tweak the tables to weak-key tables. * parser.c (parse_init): Same treatment for stream_parser_hash. We want an entry to disappear from the hash if neither the parser nor the stream are reachable. (parse_compat_fixup): New function. * parser.h (parse_compat_function): Declared. * hash.c, hash.h (tweak_hash): New function. * lib.c (compat_fixup): Call parse_compat_fixup. --- parser.h | 1 + 1 file changed, 1 insertion(+) (limited to 'parser.h') diff --git a/parser.h b/parser.h index 3d682daa..b504b083 100644 --- a/parser.h +++ b/parser.h @@ -148,3 +148,4 @@ val parser_set_lineno(val self, val stream, val lineno); val parser_errors(val parser); val parse_errors(val stream); void parse_init(void); +void parse_compat_fixup(int compat_ver); -- cgit v1.2.3