[clang-format] Mark constexpr lambdas as lambda

Otherwise the brace was detected as a function brace, not wrong per se,
but when directly calling the lambda the calling parens were put on the
next line.

Differential Revision: https://reviews.llvm.org/D129946

1 files changed, 7 insertions, 0 deletions

diff --git a/clang/unittests/Format/TokenAnnotatorTest.cpp b/clang/unittests/Format/TokenAnnotatorTest.cpp
index ed6fb41..bdbfca7 100644
--- a/clang/unittests/Format/TokenAnnotatorTest.cpp
+++ b/clang/unittests/Format/TokenAnnotatorTest.cpp
@@ -894,6 +894,13 @@ TEST_F(TokenAnnotatorTest, UnderstandsObjCBlock) {
   EXPECT_TOKEN(Tokens[9], tok::l_brace, TT_ObjCBlockLBrace);
 }
 
+TEST_F(TokenAnnotatorTest, UnderstandsLambdas) {
+  auto Tokens = annotate("[]() constexpr {}");
+  ASSERT_EQ(Tokens.size(), 8u) << Tokens;
+  EXPECT_TOKEN(Tokens[0], tok::l_square, TT_LambdaLSquare);
+  EXPECT_TOKEN(Tokens[5], tok::l_brace, TT_LambdaLBrace);
+}
+
 } // namespace
 } // namespace format
 } // namespace clang