From e690d40e0bca67f1212d9e2d2c00a160bf1940cc Mon Sep 17 00:00:00 2001
From: Walter Bright <walter@walterbright.com>
Date: Wed, 21 Jun 2023 01:46:06 -0700
Subject: [PATCH] std.stdio: add default case

---
 std/stdio.d | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/std/stdio.d b/std/stdio.d
index 5ed685fe7..aa9981021 100644
--- a/std/stdio.d
+++ b/std/stdio.d
@@ -129,6 +129,10 @@ else version (Solaris)
 {
     version = GENERIC_IO;
 }
+else
+{
+    static assert(0, "unsupported operating system");
+}
 
 // Character type used for operating system filesystem APIs
 version (Windows)