From 12f23d5ae8e4209dc9b1f40a0b792c6063ba78c5 Mon Sep 17 00:00:00 2001
From: ringabout <43030857+ringabout@users.noreply.github.com>
Date: Wed, 24 Aug 2022 19:32:11 +0800
Subject: [PATCH] fixes nimPreviewSlimSystem; register echoBinSafe for
 nimPreviewSlimSystem (#20194)

* register echoBinSafe

* add output
---
 lib/system.nim               | 2 ++
 tests/system/tslimsystem.nim | 6 ++++++
 2 files changed, 8 insertions(+)
 create mode 100644 tests/system/tslimsystem.nim

diff --git a/lib/system.nim b/lib/system.nim
index d8d90f11a..0ecc45a18 100644
--- a/lib/system.nim
+++ b/lib/system.nim
@@ -3147,6 +3147,8 @@ when not defined(nimPreviewSlimSystem):
   {.deprecated: "io is about to move out of system; use `-d:nimPreviewSlimSystem` and import `std/syncio`".}
   import std/syncio
   export syncio
+else:
+  import std/syncio
 
 when not defined(createNimHcr) and not defined(nimscript):
   include nimhcr
diff --git a/tests/system/tslimsystem.nim b/tests/system/tslimsystem.nim
new file mode 100644
index 000000000..690f4ee9b
--- /dev/null
+++ b/tests/system/tslimsystem.nim
@@ -0,0 +1,6 @@
+discard """
+  output: "123"
+  matrix: "-d:nimPreviewSlimSystem"
+"""
+
+echo 123
\ No newline at end of file