From e0c1159fb3f1f392698f071485d3e43e1e7f1a36 Mon Sep 17 00:00:00 2001
From: ringabout <43030857+ringabout@users.noreply.github.com>
Date: Wed, 21 Sep 2022 16:29:39 +0800
Subject: [PATCH] fixes #20391; make of operator work with generics for ORC
 (#20395)

---
 compiler/ccgtypes.nim           | 2 +-
 tests/method/tmethod_issues.nim | 8 ++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/compiler/ccgtypes.nim b/compiler/ccgtypes.nim
index 16768685b..654e266ba 100644
--- a/compiler/ccgtypes.nim
+++ b/compiler/ccgtypes.nim
@@ -1280,7 +1280,7 @@ proc genTypeInfo2Name(m: BModule; t: PType): Rope =
   var it = t
   while it != nil:
     it = it.skipTypes(skipPtrs)
-    if it.sym != nil:
+    if it.sym != nil and tfFromGeneric notin it.flags:
       var m = it.sym.owner
       while m != nil and m.kind != skModule: m = m.owner
       if m == nil or sfSystemModule in m.flags:
diff --git a/tests/method/tmethod_issues.nim b/tests/method/tmethod_issues.nim
index 07d4635f6..daaa46522 100644
--- a/tests/method/tmethod_issues.nim
+++ b/tests/method/tmethod_issues.nim
@@ -160,3 +160,11 @@ proc main() =
 
 main()
 
+block: # bug #20391
+  type Container[T] = ref object of RootRef
+    item: T
+
+  let a = Container[int]()
+
+  doAssert a of Container[int]
+  doAssert not (a of Container[string])