From 2bc1443662f78bb9272ab0d4cc6e37e89eb4b549 Mon Sep 17 00:00:00 2001
From: Ethan Stoner <ethanstoner08@gmail.com>
Date: Thu, 3 Sep 2026 10:44:25 -0700
Subject: [PATCH] Build nolocale-test with /utf-8 on MSVC

nolocale-test compiles src/format.cc directly, so it does not pick up the
/utf-8 that CMakeLists.txt adds to the fmt target. On MSVC the static_assert
in base.h then fires: "Unicode support requires compiling with /utf-8".

The target only exists under FMT_PEDANTIC, which the Windows workflow does not
set, so this has not shown up in CI. unicode-test already guards the same flag
the same way.
---
 test/CMakeLists.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index c36ba396f038..fd521626d067 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -134,6 +134,9 @@ if (FMT_PEDANTIC)
                              PRIVATE ${PROJECT_SOURCE_DIR}/include)
   target_compile_definitions(nolocale-test
                              PRIVATE FMT_STATIC_THOUSANDS_SEPARATOR=1)
+  if (MSVC)
+    target_compile_options(nolocale-test PRIVATE /utf-8)
+  endif ()
 endif ()
 
 # These tests are disabled on Windows because they take too long.