From 799e0f3274edd9d0fadcc58640afa32b3bdc6da1 Mon Sep 17 00:00:00 2001
From: Araq <rumpf_a@web.de>
Date: Sun, 9 Aug 2015 23:53:22 +0200
Subject: [PATCH] fixes #3066

---
 compiler/vmgen.nim        |  3 +++
 tests/vm/tforwardproc.nim | 17 +++++++++++++++++
 2 files changed, 20 insertions(+)
 create mode 100644 tests/vm/tforwardproc.nim

diff --git a/compiler/vmgen.nim b/compiler/vmgen.nim
index 6a59b33840..73fcc5a27a 100644
--- a/compiler/vmgen.nim
+++ b/compiler/vmgen.nim
@@ -1184,6 +1184,9 @@ proc checkCanEval(c: PCtx; n: PNode) =
   if s.kind in {skVar, skTemp, skLet, skParam, skResult} and
       not s.isOwnedBy(c.prc.sym) and s.owner != c.module:
     cannotEval(n)
+  elif s.kind in {skProc, skConverter, skMethod,
+                  skIterator, skClosureIterator} and sfForward in s.flags:
+    cannotEval(n)
 
 proc isTemp(c: PCtx; dest: TDest): bool =
   result = dest >= 0 and c.prc.slots[dest].kind >= slotTempUnknown
diff --git a/tests/vm/tforwardproc.nim b/tests/vm/tforwardproc.nim
new file mode 100644
index 0000000000..727ac66415
--- /dev/null
+++ b/tests/vm/tforwardproc.nim
@@ -0,0 +1,17 @@
+discard """
+  errormsg: "cannot evaluate at compile time: initArray"
+  line: 11
+"""
+
+# bug #3066
+
+proc initArray(): array[10, int]
+
+const
+  someTable = initArray()
+
+proc initArray(): array[10, int] =
+  for f in 0..<10:
+    result[f] = 3
+
+when isMainModule: echo repr(someTable)