From 399c5e38b7bf7a0998ca9ed4bce57c7092d59229 Mon Sep 17 00:00:00 2001
From: jcosborn <jcosborn@users.noreply.github.com>
Date: Tue, 16 Jan 2018 18:32:40 -0600
Subject: [PATCH] don't make optNilCheck default to on for now (#7058)

* don't make optNilCheck default to on for now

* add conditional symbol nimHasNilChecks
---
 compiler/condsyms.nim | 1 +
 config/nim.cfg        | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/compiler/condsyms.nim b/compiler/condsyms.nim
index a52214e73..0be2899be 100644
--- a/compiler/condsyms.nim
+++ b/compiler/condsyms.nim
@@ -112,3 +112,4 @@ proc initDefines*() =
   defineSymbol("nimNewRoof")
   defineSymbol("nimHasRunnableExamples")
   defineSymbol("nimNewDot")
+  defineSymbol("nimHasNilChecks")
diff --git a/config/nim.cfg b/config/nim.cfg
index a146c4ebf..9fddce90a 100644
--- a/config/nim.cfg
+++ b/config/nim.cfg
@@ -59,6 +59,9 @@ path="$lib/pure"
   debugger:off
   line_dir:off
   dead_code_elim:on
+  @if nimHasNilChecks:
+    nilchecks:off
+  @end
 @end
 
 @if release: