From d68826dfbd987377ef6771d40c1d984f09ee3b9e Mon Sep 17 00:00:00 2001
From: Owen Pan <owenpiano@gmail.com>
Date: Tue, 24 Oct 2023 02:42:39 -0700
Subject: [PATCH] [clang-format] Don't break between string literal operands of
 << (#69871)

Fixes #44363.
---
 clang/lib/Format/TokenAnnotator.cpp   | 4 ----
 clang/unittests/Format/FormatTest.cpp | 4 ++++
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/clang/lib/Format/TokenAnnotator.cpp b/clang/lib/Format/TokenAnnotator.cpp
index 4a7378c24cda57..e0ea8bcdb07a32 100644
--- a/clang/lib/Format/TokenAnnotator.cpp
+++ b/clang/lib/Format/TokenAnnotator.cpp
@@ -5117,10 +5117,6 @@ bool TokenAnnotator::mustBreakBefore(const AnnotatedLine &Line,
     return true;
   if (Left.IsUnterminatedLiteral)
     return true;
-  if (Right.is(tok::lessless) && Right.Next && Left.is(tok::string_literal) &&
-      Right.Next->is(tok::string_literal)) {
-    return true;
-  }
   if (Right.is(TT_RequiresClause)) {
     switch (Style.RequiresClausePosition) {
     case FormatStyle::RCPS_OwnLine:
diff --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
index 02447dec840e36..8329daa7665949 100644
--- a/clang/unittests/Format/FormatTest.cpp
+++ b/clang/unittests/Format/FormatTest.cpp
@@ -26468,6 +26468,10 @@ TEST_F(FormatTest, PPBranchesInBracedInit) {
                "};");
 }
 
+TEST_F(FormatTest, StreamOutputOperator) {
+  verifyFormat("std::cout << \"foo\" << \"bar\" << baz;");
+}
+
 } // namespace
 } // namespace test
 } // namespace format