From 7ed476f51fe6d3240abb4d54435dc12c9da0b91d Mon Sep 17 00:00:00 2001
From: Jieyou Xu <jieyouxu@outlook.com>
Date: Sun, 5 Oct 2025 19:58:56 +0800
Subject: [PATCH] bootstrap: don't build redirect pages during dry-run/test

---
 src/bootstrap/src/core/build_steps/doc.rs | 4 ++++
 src/bootstrap/src/core/builder/tests.rs   | 8 ++++----
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/src/bootstrap/src/core/build_steps/doc.rs b/src/bootstrap/src/core/build_steps/doc.rs
index 37462c63f1b09..0a0f3b95b2cf8 100644
--- a/src/bootstrap/src/core/build_steps/doc.rs
+++ b/src/bootstrap/src/core/build_steps/doc.rs
@@ -274,6 +274,10 @@ impl Step for TheBook {
 
         // build the redirect pages
         let _guard = builder.msg(Kind::Doc, "book redirect pages", None, build_compiler, target);
+        if builder.config.dry_run() {
+            return;
+        }
+
         for file in t!(fs::read_dir(redirect_path)) {
             let file = t!(file);
             let path = file.path();
diff --git a/src/bootstrap/src/core/builder/tests.rs b/src/bootstrap/src/core/builder/tests.rs
index 3306435758b45..d0429387f824e 100644
--- a/src/bootstrap/src/core/builder/tests.rs
+++ b/src/bootstrap/src/core/builder/tests.rs
@@ -1270,12 +1270,12 @@ mod snapshot {
         [doc] book/first-edition (book) <host>
         [doc] book/second-edition (book) <host>
         [doc] book/2018-edition (book) <host>
-        [build] rustdoc 1 <host>
         [build] rustc 1 <host> -> std 1 <target1>
         [doc] book (book) <target1>
         [doc] book/first-edition (book) <target1>
         [doc] book/second-edition (book) <target1>
         [doc] book/2018-edition (book) <target1>
+        [build] rustdoc 1 <host>
         [doc] rustc 1 <host> -> standalone 2 <host>
         [doc] rustc 1 <host> -> standalone 2 <target1>
         [doc] rustc 1 <host> -> std 1 <host> crates=[alloc,compiler_builtins,core,panic_abort,panic_unwind,proc_macro,rustc-std-workspace-core,std,std_detect,sysroot,test,unwind]
@@ -1409,12 +1409,12 @@ mod snapshot {
         [doc] book/first-edition (book) <host>
         [doc] book/second-edition (book) <host>
         [doc] book/2018-edition (book) <host>
-        [build] rustdoc 1 <host>
         [build] rustc 1 <host> -> std 1 <target1>
         [doc] book (book) <target1>
         [doc] book/first-edition (book) <target1>
         [doc] book/second-edition (book) <target1>
         [doc] book/2018-edition (book) <target1>
+        [build] rustdoc 1 <host>
         [doc] rustc 1 <host> -> standalone 2 <host>
         [doc] rustc 1 <host> -> standalone 2 <target1>
         [doc] rustc 1 <host> -> std 1 <host> crates=[alloc,compiler_builtins,core,panic_abort,panic_unwind,proc_macro,rustc-std-workspace-core,std,std_detect,sysroot,test,unwind]
@@ -1493,8 +1493,8 @@ mod snapshot {
         [doc] book/first-edition (book) <target1>
         [doc] book/second-edition (book) <target1>
         [doc] book/2018-edition (book) <target1>
-        [build] rustdoc 1 <host>
         [build] rustc 1 <host> -> std 1 <host>
+        [build] rustdoc 1 <host>
         [doc] rustc 1 <host> -> standalone 2 <target1>
         [doc] rustc 1 <host> -> std 1 <target1> crates=[alloc,compiler_builtins,core,panic_abort,panic_unwind,proc_macro,rustc-std-workspace-core,std,std_detect,sysroot,test,unwind]
         [doc] nomicon (book) <target1>
@@ -1537,8 +1537,8 @@ mod snapshot {
         [doc] book/first-edition (book) <target1>
         [doc] book/second-edition (book) <target1>
         [doc] book/2018-edition (book) <target1>
-        [build] rustdoc 1 <host>
         [build] rustc 1 <host> -> std 1 <host>
+        [build] rustdoc 1 <host>
         [doc] rustc 1 <host> -> standalone 2 <target1>
         [doc] rustc 1 <host> -> std 1 <target1> crates=[alloc,compiler_builtins,core,panic_abort,panic_unwind,proc_macro,rustc-std-workspace-core,std,std_detect,sysroot,test,unwind]
         [build] llvm <target1>