From 9be7ffc5fc9e54253f2b82ff6ff4c68ea816dd88 Mon Sep 17 00:00:00 2001
From: OGINO Masanori <masanori.ogino@gmail.com>
Date: Sun, 19 Jan 2014 17:15:30 +0900
Subject: [PATCH] Define the type of marking flags as unsigned int.

We could define it as _Bool since we are going to use C99, but unsigned
int is more portable (even in C89!) and extensible (when we decide to
use tri-color marking GC.)

Signed-off-by: OGINO Masanori <masanori.ogino@gmail.com>
---
 include/picrin/gc.h | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/include/picrin/gc.h b/include/picrin/gc.h
index d8a36cb6..1495abe4 100644
--- a/include/picrin/gc.h
+++ b/include/picrin/gc.h
@@ -9,16 +9,14 @@
 extern "C" {
 #endif
 
-enum pic_gc_mark {
-  PIC_GC_UNMARK = 0,
-  PIC_GC_MARK
-};
+#define PIC_GC_UNMARK 0
+#define PIC_GC_MARK 1
 
 union header {
   struct {
     union header *ptr;
     size_t size;
-    enum pic_gc_mark mark : 1;
+    unsigned int mark : 1;
   } s;
   long alignment[2];
 };