From f1156eb5a9fb65498800d5be6ea452d49184dc2c Mon Sep 17 00:00:00 2001
From: Nico Weber <thakis@chromium.org>
Date: Wed, 20 Dec 2023 09:46:33 -0500
Subject: [gn] port 2fd4084fca0c

---
 llvm/utils/gn/secondary/libcxx/src/BUILD.gn | 1 +
 1 file changed, 1 insertion(+)

diff --git a/llvm/utils/gn/secondary/libcxx/src/BUILD.gn b/llvm/utils/gn/secondary/libcxx/src/BUILD.gn
index 3cd6e9e..124d7b1 100644
--- a/llvm/utils/gn/secondary/libcxx/src/BUILD.gn
+++ b/llvm/utils/gn/secondary/libcxx/src/BUILD.gn
@@ -145,6 +145,7 @@ cxx_sources = [
   "iostream.cpp",
   "legacy_pointer_safety.cpp",
   "locale.cpp",
+  "ostream.cpp",
   "memory.cpp",
   "memory_resource.cpp",
   "mutex.cpp",
-- 
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