From 66660eca320eb4e136f2673603e0cb799531a0f1 Mon Sep 17 00:00:00 2001
From: narimiran <narimiran@disroot.org>
Date: Thu, 4 Jul 2019 12:02:35 +0200
Subject: [PATCH] nimpretty: fix out of bounds error [ci skip]

(cherry picked from commit 4450fca6fdf3b0218783f0615a62e64ab93be550)
---
 compiler/layouter.nim | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/compiler/layouter.nim b/compiler/layouter.nim
index 7d0152122c..724e827cc6 100644
--- a/compiler/layouter.nim
+++ b/compiler/layouter.nim
@@ -250,8 +250,9 @@ proc wrTab(em: var Emitter) =
   wr(em, " ", ltTab)
 
 proc beginSection*(em: var Emitter) =
-  em.tokens.insert "", em.tokens.len-2
-  em.kinds.insert ltBeginSection, em.kinds.len-2
+  let pos = max(0, em.tokens.len-2)
+  em.tokens.insert "", pos
+  em.kinds.insert ltBeginSection, pos
 
 #wr(em, "", ltBeginSection)
 proc endSection*(em: var Emitter) =