Merge pull request #4456 from yglukhov/vm-ct-args

Fixed vm codegen for a call with compile-time args. Fixes #4412.

compiler/vmgen.nim

@@ -501,8 +501,11 @@ proc genCall(c: PCtx; n: PNode; dest: var TDest) =
   if dest < 0 and not isEmptyType(n.typ): dest = getTemp(c, n.typ)
   let x = c.getTempRange(n.len, slotTempUnknown)
   # varargs need 'opcSetType' for the FFI support:
-  let fntyp = n.sons[0].typ
+  let fntyp = skipTypes(n.sons[0].typ, abstractInst)
   for i in 0.. <n.len:
+    if i > 0 and i < sonsLen(fntyp):
+      let paramType = fntyp.n.sons[i]
+      if paramType.typ.isCompileTimeOnly: continue
     var r: TRegister = x+i
     c.gen(n.sons[i], r)
     if i >= fntyp.len:

tests/vm/tvmmisc.nim

@@ -0,0 +1,6 @@
+
+# 4412
+proc default[T](t: typedesc[T]): T {.inline.} = discard
+
+static:
+  var x = default(type(0))