1 files changed, 6 insertions, 0 deletions
diff --git a/compiler/ast.nim b/compiler/ast.nim
index 0cc4daf22..f9b43ed13 100644
--- a/compiler/ast.nim
+++ b/compiler/ast.nim
@@ -1009,6 +1009,12 @@ proc safeLen*(n: PNode): int {.inline.} =
   if n.kind in {nkNone..nkNilLit} or isNil(n.sons): result = 0
   else: result = len(n.sons)
 
+proc safeArrLen*(n: PNode): int {.inline.} =
+  ## works for array-like objects (strings passed as openArray in VM).
+  if n.kind in {nkStrLit..nkTripleStrLit}:result = len(n.strVal)
+  elif n.kind in {nkNone..nkFloat128Lit}: result = 0
+  else: result = len(n)
+
 proc add*(father, son: PNode) =
   assert son != nil
   if isNil(father.sons): father.sons = @[]