Nobuyoshi Nakada	2019-04-25 13:22:06 +0900 (Thu, 25 Apr 2019)

  New Revision: d0ba4abf1a

  https://git.ruby-lang.org/ruby.git/commit/?id=3Dd0ba4abf1a

  Log:
    Add RB_ID_SERIAL_MAX

  Modified files:
    symbol.h=
From d0ba4abf1a00339ebbb5d405db3240a8bdb7b68b Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Thu, 25 Apr 2019 13:22:06 +0900
Subject: Add RB_ID_SERIAL_MAX


diff --git a/symbol.h b/symbol.h
index 3b9866d..4b5c676 100644
--- a/symbol.h
+++ b/symbol.h
@@ -53,6 +53,10 @@ id_type(ID id) https://github.com/ruby/ruby/blob/trunk/#L53
 }
 
 typedef uint32_t rb_id_serial_t;
+static const uint32_t RB_ID_SERIAL_MAX = /* 256M on LP32 */
+    UINT32_MAX >>
+    ((sizeof(ID)-sizeof(rb_id_serial_t))*CHAR_BIT < RUBY_ID_SCOPE_SHIFT ?
+     RUBY_ID_SCOPE_SHIFT : 0);
 
 typedef struct {
     rb_id_serial_t last_id;
-- 
cgit v0.10.2


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