method.h: VM_METHOD_TYPE_MINIMUM_BITS

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62080 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

method.h

@@ -114,6 +114,8 @@ typedef enum {
 
     END_OF_ENUMERATION(VM_METHOD_TYPE)
 } rb_method_type_t;
+#define VM_METHOD_TYPE_MINIMUM_BITS 4
+/* TODO: STATIC_ASSERT for VM_METHOD_TYPE_MINIMUM_BITS */
 
 #ifndef rb_iseq_t
 typedef struct rb_iseq_struct rb_iseq_t;
@@ -153,7 +155,7 @@ enum method_optimized_type {
 };
 
 PACKED_STRUCT_UNALIGNED(struct rb_method_definition_struct {
-    BITFIELD(rb_method_type_t) type : 4;
+    BITFIELD(rb_method_type_t) type : VM_METHOD_TYPE_MINIMUM_BITS;
     int alias_count : 28;
     int complemented_count : 28;