From 682aa9d2d07f747e777210ac7d1dc5b7e35b06f5 Mon Sep 17 00:00:00 2001
From: Arthur Beck <averse.abfun@gmail.com>
Date: Tue, 25 Feb 2025 17:35:24 -0600
Subject: [PATCH] Fix unsound transmute

---
 kernel/src/kernel/psfont.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/kernel/src/kernel/psfont.rs b/kernel/src/kernel/psfont.rs
index 10a794d..07d6fd9 100644
--- a/kernel/src/kernel/psfont.rs
+++ b/kernel/src/kernel/psfont.rs
@@ -32,6 +32,7 @@ pub struct RawPCScreenFont {
 }
 
 /// The glyph type for [PCScreenFont].
+#[derive(Clone, Copy)]
 pub struct Glyph {
     /// The size of this glyph.
     pub len: u32,
@@ -113,7 +114,7 @@ pub fn parse_pc_screen_font(data: RawPCScreenFont) -> Result<PCScreenFont, crate
                 flags: data.flags,
                 height: data.height,
                 width: data.width,
-                glyphs: core::mem::transmute(data.glyphs),
+                glyphs: Vec::from(core::mem::transmute::<&[u8], &[Glyph]>(data.glyphs.as_slice())),
                 unitable: Some(unitable),
             };
             return Ok(out);
@@ -124,7 +125,7 @@ pub fn parse_pc_screen_font(data: RawPCScreenFont) -> Result<PCScreenFont, crate
             flags: data.flags,
             height: data.height,
             width: data.width,
-            glyphs: core::mem::transmute(data.glyphs),
+            glyphs: Vec::from(core::mem::transmute::<&[u8], &[Glyph]>(data.glyphs.as_slice())),
             unitable: None,
         };
         Ok(out)