From 90cd4b61e338b62b4f036448166687158f6e2115 Mon Sep 17 00:00:00 2001
From: Marshall Lochbaum <mwlochbaum@gmail.com>
Date: Tue, 24 Nov 2020 20:18:00 -0500
Subject: Check for empty program explicitly to avoid lots of indexing errors

---
 src/c.bqn | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src')

diff --git a/src/c.bqn b/src/c.bqn
index cdb4f3d1..96ca336d 100644
--- a/src/c.bqn
+++ b/src/c.bqn
@@ -108,6 +108,7 @@ Parse ← {r‿vn‿i‿e←𝕨⋄nv←≠vn
   }
   _err_←{(0!˜(∧∘⍉(i≍e)⊏⎉1˜/⟜𝔾)≍○<𝔽)⍟(∨´⍟=)}
 
+  "Empty program" ! 0<≠𝕩
   g←⍋pd←+`p←(¯1-2×r)×𝕩 M bB⋄gb←g⊏r=¯1⋄gx←g⊏𝕩
   (g⊏p)(>⟜0⊸/ErrMismatchedBrackets⍟≢1-˜<⟜0⊸/)gx
   "Swapped open and closed brackets" ! 0≤(⊑g)⊑pd
-- 
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