Merge pull request #1609 from rbehrends/fix-method-dispatch

Fix method recursion bug.

tests/method/tmproto.nim

@@ -0,0 +1,25 @@
+type
+  Obj1 = ref object {.inheritable.}
+  Obj2 = ref object of Obj1
+
+method beta(x: Obj1): int
+
+proc delta(x: Obj2): int =
+  beta(x)
+
+method beta(x: Obj2): int
+
+proc alpha(x: Obj1): int =
+  beta(x)
+
+method beta(x: Obj1): int = 1
+method beta(x: Obj2): int = 2
+
+proc gamma(x: Obj1): int =
+  beta(x)
+
+doAssert alpha(Obj1()) == 1
+doAssert gamma(Obj1()) == 1
+doAssert alpha(Obj2()) == 2
+doAssert gamma(Obj2()) == 2
+doAssert delta(Obj2()) == 2

tests/method/trecmeth.nim

@@ -0,0 +1,22 @@
+# Note: We only compile this to verify that code generation
+# for recursive methods works, no code is being executed
+
+type
+  Obj = ref object of TObject
+
+# Mutual recursion
+
+method alpha(x: Obj)
+method beta(x: Obj)
+
+method alpha(x: Obj) =
+  beta(x)
+
+method beta(x: Obj) =
+  alpha(x)
+
+# Simple recursion
+
+method gamma(x: Obj) =
+  gamma(x)
+