From 3e676ba6d1a301588146437ff9ae68aa0adc859c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Laurent=20Tr=C3=A9guier?= <laurent@treguier.org>
Date: Mon, 11 Feb 2019 11:33:54 +0100
Subject: [PATCH] Fix #427 - Crash on invariant

---
 src/dfmt/ast_info.d | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/dfmt/ast_info.d b/src/dfmt/ast_info.d
index c5bd3cc..9c3f68f 100644
--- a/src/dfmt/ast_info.d
+++ b/src/dfmt/ast_info.d
@@ -292,7 +292,9 @@ final class FormatVisitor : ASTVisitor
 
     override void visit(const Invariant invariant_)
     {
-        astInformation.doubleNewlineLocations ~= invariant_.blockStatement.endLocation;
+        if (invariant_.blockStatement !is null)
+            astInformation.doubleNewlineLocations ~= invariant_.blockStatement.endLocation;
+        
         invariant_.accept(this);
     }