From ae61e26680b967414194b4fa65568a8023108678 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <superjoe30@gmail.com>
Date: Wed, 14 Jun 2017 19:32:52 -0400
Subject: [PATCH] fix compiler segfault on `null ?? x`

closes #390
---
 src/codegen.cpp     | 1 +
 test/cases/null.zig | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/src/codegen.cpp b/src/codegen.cpp
index 3a1fad3958..20c9793dcb 100644
--- a/src/codegen.cpp
+++ b/src/codegen.cpp
@@ -4224,6 +4224,7 @@ static void define_builtin_types(CodeGen *g) {
     {
         TypeTableEntry *entry = new_type_table_entry(TypeTableEntryIdNullLit);
         buf_init_from_str(&entry->name, "(null)");
+        entry->zero_bits = true;
         g->builtin_types.entry_null = entry;
     }
     {
diff --git a/test/cases/null.zig b/test/cases/null.zig
index 484e3a076c..ad3d1bb8e2 100644
--- a/test/cases/null.zig
+++ b/test/cases/null.zig
@@ -143,3 +143,8 @@ test "unwrap nullable which is field of global var" {
         unreachable;
     }
 }
+
+test "null with default unwrap" {
+    const x: i32 = null ?? 1;
+    assert(x == 1);
+}