respect current frame of `rb_eval_string`

`self` is nearest Ruby method's `self`.
If there is no ruby frame, use toplevel `self` (`main`).

https://bugs.ruby-lang.org/issues/18780

1 files changed, 4 insertions, 1 deletions

diff --git a/vm_eval.c b/vm_eval.c
index e490e4e32d..c7669cbb85 100644
--- a/vm_eval.c
+++ b/vm_eval.c
@@ -1828,7 +1828,10 @@ VALUE
 ruby_eval_string_from_file(const char *str, const char *filename)
 {
     VALUE file = filename ? rb_str_new_cstr(filename) : 0;
-    return eval_string_with_cref(rb_vm_top_self(), rb_str_new2(str), NULL, file, 1);
+    rb_execution_context_t *ec = GET_EC();
+    rb_control_frame_t *cfp = ec ? rb_vm_get_ruby_level_next_cfp(ec, ec->cfp) : NULL;
+    VALUE self = cfp ? cfp->self : rb_vm_top_self();
+    return eval_string_with_cref(self, rb_str_new2(str), NULL, file, 1);
 }
 
 VALUE