Revert "Don't display singleton class in Method#inspect unless method defined there"

[Backport #16771]

This reverts commit 0d24fb774d84d4a99454ce10fd343da00049a588.

1 files changed, 1 insertions, 8 deletions

diff --git a/proc.c b/proc.c
index 020505ae72..e189c20886 100644
--- a/proc.c
+++ b/proc.c
@@ -2816,8 +2816,7 @@ method_inspect(VALUE method)
     TypedData_Get_Struct(method, struct METHOD, &method_data_type, data);
     str = rb_sprintf("#<% "PRIsVALUE": ", rb_obj_class(method));
 
-    mklass = data->iclass;
-    if (!mklass) mklass = data->klass;
+    mklass = data->klass;
 
     if (RB_TYPE_P(mklass, T_ICLASS)) {
         /* TODO: I'm not sure why mklass is T_ICLASS.
@@ -2857,12 +2856,6 @@ method_inspect(VALUE method)
 	}
     }
     else {
-        mklass = data->klass;
-        if (FL_TEST(mklass, FL_SINGLETON)) {
-            do {
-               mklass = RCLASS_SUPER(mklass);
-            } while (RB_TYPE_P(mklass, T_ICLASS));
-        }
 	rb_str_buf_append(str, rb_inspect(mklass));
 	if (defined_class != mklass) {
 	    rb_str_catf(str, "(% "PRIsVALUE")", defined_class);