Test cases for #6969 #7346 #7581

tests/seq/t7346.nim

@@ -0,0 +1,10 @@
+when not defined(nimNewRuntime):
+  {.error: "This bug could only be reproduced with --newruntime".}
+
+type
+  Obj = object
+    a: int
+
+proc `=`(a: var Obj, b: Obj) = discard
+
+let a: seq[Obj] = @[]

tests/types/t6969.nim

@@ -0,0 +1,10 @@
+discard """
+errormsg: "invalid type: 'object' for var"
+line: 6
+"""
+
+var a: object a: int
+# or
+var b: ref object a: int
+# or
+var c: ptr object a: int

tests/types/t7581.nim

@@ -0,0 +1 @@
+discard int -1