From 68b87918df9ad82cf3161f323c55f2e238319922 Mon Sep 17 00:00:00 2001
From: Ryan Liptak <squeek502@hotmail.com>
Date: Tue, 13 Feb 2024 16:56:50 -0800
Subject: Fix handling of Windows (WTF-16) and WASI (UTF-8) paths

Windows paths now use WTF-16 <-> WTF-8 conversion everywhere, which is lossless. Previously, conversion of ill-formed UTF-16 paths would either fail or invoke illegal behavior.

WASI paths must be valid UTF-8, and the relevant function calls have been updated to handle the possibility of failure due to paths not being encoded/encodable as valid UTF-8.

Closes #18694
Closes #1774
Closes #2565
---
 lib/std/fs/File.zig | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'lib/std/fs/File.zig')

diff --git a/lib/std/fs/File.zig b/lib/std/fs/File.zig
index 20b3976ea6..669f1b72e3 100644
--- a/lib/std/fs/File.zig
+++ b/lib/std/fs/File.zig
@@ -40,8 +40,11 @@ pub const OpenError = error{
     AccessDenied,
     PipeBusy,
     NameTooLong,
-    /// On Windows, file paths must be valid Unicode.
+    /// WASI-only; file paths must be valid UTF-8.
     InvalidUtf8,
+    /// Windows-only; file paths provided by the user must be valid WTF-8.
+    /// https://simonsapin.github.io/wtf-8/
+    InvalidWtf8,
     /// On Windows, file paths cannot contain these characters:
     /// '/', '*', '?', '"', '<', '>', '|'
     BadPathName,
-- 
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