From 47fcbfdc51bcb9c9d518a76b8eee122833893660 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Tue, 27 Aug 2019 17:39:06 -0400
Subject: [PATCH] add regression test for already fixed bug

closes #3112
---
 test/stage1/behavior.zig           |  1 +
 test/stage1/behavior/bugs/3112.zig | 17 +++++++++++++++++
 2 files changed, 18 insertions(+)
 create mode 100644 test/stage1/behavior/bugs/3112.zig

diff --git a/test/stage1/behavior.zig b/test/stage1/behavior.zig
index d891b4200b..f7152971a4 100644
--- a/test/stage1/behavior.zig
+++ b/test/stage1/behavior.zig
@@ -30,6 +30,7 @@ comptime {
     _ = @import("behavior/bugs/2114.zig");
     _ = @import("behavior/bugs/2346.zig");
     _ = @import("behavior/bugs/2578.zig");
+    _ = @import("behavior/bugs/3112.zig");
     _ = @import("behavior/bugs/394.zig");
     _ = @import("behavior/bugs/421.zig");
     _ = @import("behavior/bugs/529.zig");
diff --git a/test/stage1/behavior/bugs/3112.zig b/test/stage1/behavior/bugs/3112.zig
new file mode 100644
index 0000000000..1dfe359d4a
--- /dev/null
+++ b/test/stage1/behavior/bugs/3112.zig
@@ -0,0 +1,17 @@
+const std = @import("std");
+const expect = std.testing.expect;
+
+const State = struct {
+    const Self = @This();
+    enter: fn (previous: ?Self) void,
+};
+
+fn prev(p: ?State) void {
+    expect(p == null);
+}
+
+test "zig test crash" {
+    var global: State = undefined;
+    global.enter = prev;
+    global.enter(null);
+}