From f46a8c68569b0d50d5552363385195c12515a551 Mon Sep 17 00:00:00 2001
From: Jeremy Nimmer <jeremy.nimmer@tri.global>
Date: Thu, 2 Oct 2025 05:48:39 -0700
Subject: [PATCH] [workspace] Upgrade llvm to 20.1.7

This only affects our clang-format version.
---
 MODULE.bazel                                                  | 2 +-
 .../pydrake/common/test/deprecation_example/example_class.h   | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/MODULE.bazel b/MODULE.bazel
index 0f599972e371..e4f780f04115 100644
--- a/MODULE.bazel
+++ b/MODULE.bazel
@@ -90,7 +90,7 @@ llvm = use_repo_rule("@toolchains_llvm//toolchain:rules.bzl", "llvm")
 
 llvm(
     name = "llvm",
-    llvm_version = "19.1.3",
+    llvm_version = "20.1.7",
 )
 
 # Load dependencies which are "public", i.e., made available to downstream
diff --git a/bindings/pydrake/common/test/deprecation_example/example_class.h b/bindings/pydrake/common/test/deprecation_example/example_class.h
index 63e9c53bb549..84bdfa8acdb0 100644
--- a/bindings/pydrake/common/test/deprecation_example/example_class.h
+++ b/bindings/pydrake/common/test/deprecation_example/example_class.h
@@ -70,8 +70,8 @@ class ExampleCppClass {
 /// Serves as an example for binding (and deprecating) a simple struct. This
 /// allows the struct to be constructed with ParamInit and deprecated using
 /// the corresponding DeprecatedParamInit.
-struct DRAKE_DEPRECATED(
-    "2038-01-19", "Do not use ExampleCppStruct") ExampleCppStruct {
+struct DRAKE_DEPRECATED("2038-01-19", "Do not use ExampleCppStruct")
+    ExampleCppStruct {
   int i{};
   int j{};
 };