Use rb_fstring for "defined" strings.

We can take advantage of fstrings to de-duplicate the defined strings.
This means we don't need to keep the list of defined strings on the VM
(or register them as mark objects)

1 files changed, 0 insertions, 4 deletions

diff --git a/vm.c b/vm.c
index 6b8119b1ba..1238cebc23 100644
--- a/vm.c
+++ b/vm.c
@@ -2677,15 +2677,11 @@ ruby_vm_destruct(rb_vm_t *vm)
 static size_t
 vm_memsize(const void *ptr)
 {
-    const rb_vm_t *vmobj = ptr;
     size_t size = sizeof(rb_vm_t);
 
     // TODO
     // size += vmobj->ractor_num * sizeof(rb_ractor_t);
 
-    if (vmobj->defined_strings) {
-	size += DEFINED_EXPR * sizeof(VALUE);
-    }
     return size;
 }