From a78ac96134a28d9e8208728bc8affb99122ff4fa Mon Sep 17 00:00:00 2001
From: Loris Cro <kappaloris@gmail.com>
Date: Thu, 7 May 2020 01:49:38 +0200
Subject: [PATCH] fix crash in single-threaded builds

---
 lib/std/event/loop.zig | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/lib/std/event/loop.zig b/lib/std/event/loop.zig
index 8ef5f1d8e..cbaa156d0 100644
--- a/lib/std/event/loop.zig
+++ b/lib/std/event/loop.zig
@@ -616,14 +616,16 @@ pub const Loop = struct {
 
         self.workerRun();
 
-        switch (builtin.os.tag) {
-            .linux,
-            .macosx,
-            .freebsd,
-            .netbsd,
-            .dragonfly,
-            => self.fs_thread.wait(),
-            else => {},
+        if (!builtin.single_threaded) {
+            switch (builtin.os.tag) {
+                .linux,
+                .macosx,
+                .freebsd,
+                .netbsd,
+                .dragonfly,
+                => self.fs_thread.wait(),
+                else => {},
+            }
         }
 
         for (self.extra_threads) |extra_thread| {