Adding `GC.compact` and compacting GC support.

This commit adds the new method `GC.compact` and compacting GC support.
Please see this issue for caveats:

  https://bugs.ruby-lang.org/issues/15626

[Feature #15626]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67479 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 4 deletions

diff --git a/vm_core.h b/vm_core.h
index d0d4d72c3d..2e8ddfe37f 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -346,7 +346,7 @@ struct rb_iseq_constant_body {
     } type;              /* instruction sequence type */
 
     unsigned int iseq_size;
-    const VALUE *iseq_encoded; /* encoded iseq (insn addr and operands) */
+    VALUE *iseq_encoded; /* encoded iseq (insn addr and operands) */
 
     /**
      * parameter information
@@ -414,7 +414,7 @@ struct rb_iseq_constant_body {
 	    int bits_start;
 	    int rest_start;
 	    const ID *table;
-	    const VALUE *default_values;
+            VALUE *default_values;
 	} *keyword;
     } param;
 
@@ -433,7 +433,7 @@ struct rb_iseq_constant_body {
     const ID *local_table;		/* must free */
 
     /* catch table */
-    const struct iseq_catch_table *catch_table;
+    struct iseq_catch_table *catch_table;
 
     /* for child iseq */
     const struct rb_iseq_struct *parent_iseq;
@@ -1029,7 +1029,7 @@ typedef struct {
 
 typedef struct {
     VALUE flags; /* imemo header */
-    const rb_iseq_t *iseq;
+    rb_iseq_t *iseq;
     const VALUE *ep;
     const VALUE *env;
     unsigned int env_size;