diff --git a/tests/seq/t7346.nim b/tests/seq/t7346.nim
new file mode 100644
index 0000000000..ef2fd5b799
--- /dev/null
+++ b/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] = @[]
\ No newline at end of file
diff --git a/tests/types/t6969.nim b/tests/types/t6969.nim
new file mode 100644
index 0000000000..d6ce5e62af
--- /dev/null
+++ b/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
\ No newline at end of file
diff --git a/tests/types/t7581.nim b/tests/types/t7581.nim
new file mode 100644
index 0000000000..796f30271e
--- /dev/null
+++ b/tests/types/t7581.nim
@@ -0,0 +1 @@
+discard int -1
\ No newline at end of file