From 36a16798f798eb59db21ff2a8a163135b4a599fe Mon Sep 17 00:00:00 2001
From: clubby789 <jamie@hill-daniel.co.uk>
Date: Tue, 6 Feb 2024 22:26:16 +0000
Subject: [PATCH] Pin `memchr` version

---
 compiler/rustc_ast/Cargo.toml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/compiler/rustc_ast/Cargo.toml b/compiler/rustc_ast/Cargo.toml
index 937ee4bcd4266..087f6a192b5c8 100644
--- a/compiler/rustc_ast/Cargo.toml
+++ b/compiler/rustc_ast/Cargo.toml
@@ -4,9 +4,10 @@ version = "0.0.0"
 edition = "2021"
 
 [dependencies]
+# FIXME: bumping memchr to 2.7.1 causes linker errors in MSVC thin-lto
 # tidy-alphabetical-start
 bitflags = "2.4.1"
-memchr = "2.5.0"
+memchr = "=2.5.0"
 rustc_data_structures = { path = "../rustc_data_structures" }
 rustc_index = { path = "../rustc_index" }
 rustc_lexer = { path = "../rustc_lexer" }