* include/ruby/ruby.h (rb_data_type_struct): constified dsize.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@24801 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/include/ruby/ruby.h b/include/ruby/ruby.h
index 0df679791a..aa96df5a3d 100644
--- a/include/ruby/ruby.h
+++ b/include/ruby/ruby.h
@@ -740,7 +740,7 @@ typedef struct rb_data_type_struct {
     const char *wrap_struct_name;
     void (*dmark)(void*);
     void (*dfree)(void*);
-    size_t (*dsize)(void *);
+    size_t (*dsize)(const void *);
     void *ary[4]; /* for extension */
 } rb_data_type_t;