From 1636c05d138a7a52c5b6cb3cafe6ab84f59f086b Mon Sep 17 00:00:00 2001
From: Timothee Cour <timothee.cour2@gmail.com>
Date: Sun, 23 May 2021 01:02:04 -0700
Subject: [PATCH] close #5540 generic object with generic field evaluated too
 early (#18062)

---
 tests/misc/t5540.nim | 45 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 tests/misc/t5540.nim

diff --git a/tests/misc/t5540.nim b/tests/misc/t5540.nim
new file mode 100644
index 000000000..6a19e70e1
--- /dev/null
+++ b/tests/misc/t5540.nim
@@ -0,0 +1,45 @@
+# bug #5540; works in 1.2.0
+# fails in 1.0 (Error: cannot generate VM code for)
+# fails in 0.18.0 (Error: type mismatch: got <type T>)
+
+block:
+  type
+    Fruit = object
+    Yellow = object
+      a: int
+  template getColor(x: typedesc[Fruit]): typedesc = Yellow
+  type
+    Banana[T] = object
+      b: T
+      a: getColor(Fruit)
+    Apple[T] = object
+      a: T
+      b: getColor(T)
+  block:
+    var x: Banana[int]
+    doAssert x.b == 0
+    doAssert x.a is Yellow
+  block:
+    var x: Apple[Fruit]
+    doAssert x.b is Yellow
+
+block:
+  type
+    Fruit = object
+    Yellow = object
+      a: int
+    
+  template getColor(x: typedesc[Fruit]): typedesc = Yellow
+
+  type
+    Banana[T] = object
+      b: T
+      a: getColor(Fruit)
+
+    Apple[T] = object
+      a: T
+      b: getColor(T)
+      
+  var x: Banana[int]
+  x.b = 13
+  x.a.a = 17