diff --git a/iseq.c b/iseq.c
index b6b42821e2..e9d7d85301 100644
--- a/iseq.c
+++ b/iseq.c
@@ -771,6 +771,15 @@ rb_iseq_method_name(const rb_iseq_t *iseq)
     }
 }
 
+void
+rb_iseq_code_range(const rb_iseq_t *iseq, int *first_lineno, int *first_column, int *last_lineno, int *last_column)
+{
+    if (first_lineno) *first_lineno = iseq->body->location.code_range.first_loc.lineno;
+    if (first_column) *first_column = iseq->body->location.code_range.first_loc.column;
+    if (last_lineno) *last_lineno = iseq->body->location.code_range.last_loc.lineno;;
+    if (last_column) *last_column = iseq->body->location.code_range.last_loc.column;
+}
+
 VALUE
 rb_iseq_coverage(const rb_iseq_t *iseq)
 {
diff --git a/iseq.h b/iseq.h
index fb0a5d0d29..17066cb4bd 100644
--- a/iseq.h
+++ b/iseq.h
@@ -189,6 +189,7 @@ VALUE rb_iseq_label(const rb_iseq_t *iseq);
 VALUE rb_iseq_base_label(const rb_iseq_t *iseq);
 VALUE rb_iseq_first_lineno(const rb_iseq_t *iseq);
 VALUE rb_iseq_method_name(const rb_iseq_t *iseq);
+void rb_iseq_code_range(const rb_iseq_t *iseq, int *first_lineno, int *first_column, int *last_lineno, int *last_column);
 
 /* proc.c */
 const rb_iseq_t *rb_method_iseq(VALUE body);