From 41070bd9381bc0604171eba9308869eecd94b20b Mon Sep 17 00:00:00 2001
From: onur-ozkan <work@onurozkan.dev>
Date: Sat, 13 Jul 2024 19:58:36 +0300
Subject: [PATCH] explain why we use in-tree std for compiletest

Signed-off-by: onur-ozkan <work@onurozkan.dev>
---
 src/bootstrap/src/core/build_steps/test.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/bootstrap/src/core/build_steps/test.rs b/src/bootstrap/src/core/build_steps/test.rs
index 33517c5e2e440..1fa58040a1195 100644
--- a/src/bootstrap/src/core/build_steps/test.rs
+++ b/src/bootstrap/src/core/build_steps/test.rs
@@ -686,6 +686,8 @@ impl Step for CompiletestTest {
         let mut cargo = tool::prepare_tool_cargo(
             builder,
             compiler,
+            // compiletest uses libtest internals; make it use the in-tree std to make sure it never breaks
+            // when std sources change.
             Mode::ToolStd,
             host,
             "test",