From 51b7044347d2cb9e2eae18ad49c79803dda60be2 Mon Sep 17 00:00:00 2001
From: Josh Stone <jistone@redhat.com>
Date: Wed, 8 Jan 2020 10:04:18 -0800
Subject: [PATCH] Build compiletest with in-tree libtest

---
 src/bootstrap/tool.rs | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/bootstrap/tool.rs b/src/bootstrap/tool.rs
index 89245825ed5b..7f24768a4f10 100644
--- a/src/bootstrap/tool.rs
+++ b/src/bootstrap/tool.rs
@@ -290,6 +290,7 @@ macro_rules! bootstrap_tool {
     ($(
         $name:ident, $path:expr, $tool_name:expr
         $(,is_external_tool = $external:expr)*
+        $(,is_unstable_tool = $unstable:expr)*
         $(,features = $features:expr)*
         ;
     )+) => {
@@ -340,7 +341,12 @@ fn run(self, builder: &Builder<'_>) -> PathBuf {
                     compiler: self.compiler,
                     target: self.target,
                     tool: $tool_name,
-                    mode: Mode::ToolBootstrap,
+                    mode: if false $(|| $unstable)* {
+                        // use in-tree libraries for unstable features
+                        Mode::ToolStd
+                    } else {
+                        Mode::ToolBootstrap
+                    },
                     path: $path,
                     is_optional_tool: false,
                     source_type: if false $(|| $external)* {
@@ -367,7 +373,7 @@ fn run(self, builder: &Builder<'_>) -> PathBuf {
     Tidy, "src/tools/tidy", "tidy";
     Linkchecker, "src/tools/linkchecker", "linkchecker";
     CargoTest, "src/tools/cargotest", "cargotest";
-    Compiletest, "src/tools/compiletest", "compiletest";
+    Compiletest, "src/tools/compiletest", "compiletest", is_unstable_tool = true;
     BuildManifest, "src/tools/build-manifest", "build-manifest";
     RemoteTestClient, "src/tools/remote-test-client", "remote-test-client";
     RustInstaller, "src/tools/rust-installer", "fabricate", is_external_tool = true;