From 63d8758d35516d77dc53b5acaf0dc405f2297166 Mon Sep 17 00:00:00 2001
From: Mara Bos <m-ou.se@m-ou.se>
Date: Mon, 17 Apr 2023 13:45:11 +0200
Subject: [PATCH] Force -Zflatten-format-args=no in Clippy.

---
 src/tools/clippy/src/driver.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/tools/clippy/src/driver.rs b/src/tools/clippy/src/driver.rs
index 718bc41fb99..205905d5091 100644
--- a/src/tools/clippy/src/driver.rs
+++ b/src/tools/clippy/src/driver.rs
@@ -160,6 +160,9 @@ impl rustc_driver::Callbacks for ClippyCallbacks {
         // MIR passes can be enabled / disabled separately, we should figure out, what passes to
         // use for Clippy.
         config.opts.unstable_opts.mir_opt_level = Some(0);
+
+        // Disable flattening and inlining of format_args!(), so the HIR matches with the AST.
+        config.opts.unstable_opts.flatten_format_args = false;
     }
 }