llvmbot wrote:

<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang-format

Author: Owen Pan (owenca)

<details>
<summary>Changes</summary>

Fixes #<!-- -->95072.

---
Full diff: https://github.com/llvm/llvm-project/pull/95084.diff


2 Files Affected:

- (modified) clang/lib/Format/UnwrappedLineParser.cpp (+2) 
- (modified) clang/unittests/Format/TokenAnnotatorTest.cpp (+6) 


``````````diff
diff --git a/clang/lib/Format/UnwrappedLineParser.cpp 
b/clang/lib/Format/UnwrappedLineParser.cpp
index eb96b54ec4c96..08387d2e08ee0 100644
--- a/clang/lib/Format/UnwrappedLineParser.cpp
+++ b/clang/lib/Format/UnwrappedLineParser.cpp
@@ -2257,6 +2257,8 @@ bool UnwrappedLineParser::tryToParseLambda() {
       break;
     case tok::kw_auto:
     case tok::kw_class:
+    case tok::kw_struct:
+    case tok::kw_union:
     case tok::kw_template:
     case tok::kw_typename:
     case tok::amp:
diff --git a/clang/unittests/Format/TokenAnnotatorTest.cpp 
b/clang/unittests/Format/TokenAnnotatorTest.cpp
index 3d609a1f041bc..0a1fb8c657ceb 100644
--- a/clang/unittests/Format/TokenAnnotatorTest.cpp
+++ b/clang/unittests/Format/TokenAnnotatorTest.cpp
@@ -1591,6 +1591,12 @@ TEST_F(TokenAnnotatorTest, UnderstandsLambdas) {
   EXPECT_TOKEN(Tokens[15], tok::arrow, TT_TrailingReturnArrow);
   EXPECT_TOKEN(Tokens[17], tok::l_brace, TT_LambdaLBrace);
 
+  Tokens = annotate("auto l = [] -> struct S { return {}; };");
+  ASSERT_EQ(Tokens.size(), 16u) << Tokens;
+  EXPECT_TOKEN(Tokens[3], tok::l_square, TT_LambdaLSquare);
+  EXPECT_TOKEN(Tokens[5], tok::arrow, TT_TrailingReturnArrow);
+  EXPECT_TOKEN(Tokens[8], tok::l_brace, TT_LambdaLBrace);
+
   Tokens = annotate("[] <typename T> () {}");
   ASSERT_EQ(Tokens.size(), 11u) << Tokens;
   EXPECT_TOKEN(Tokens[0], tok::l_square, TT_LambdaLSquare);

``````````

</details>


https://github.com/llvm/llvm-project/pull/95084
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