From 18b46485bcb6ad6b4be31c87659ffd78a311c904 Mon Sep 17 00:00:00 2001
From: LemonBoy <thatlemon@gmail.com>
Date: Wed, 5 May 2021 10:46:21 +0200
Subject: [PATCH] stage2: Fix UAF in ErrorMsg destructor

After calling gpa.destroy the object is gone for good, setting the
contents to undefined is a bug and may crash the compiler.
---
 src/Compilation.zig | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/Compilation.zig b/src/Compilation.zig
index 7ff7ef1374..58d6f41858 100644
--- a/src/Compilation.zig
+++ b/src/Compilation.zig
@@ -232,7 +232,6 @@ pub const CObject = struct {
         pub fn destroy(em: *ErrorMsg, gpa: *Allocator) void {
             gpa.free(em.msg);
             gpa.destroy(em);
-            em.* = undefined;
         }
     };