[clang] 2302110 - [clang-format] Don't annotate C compound literal r_paren (#180436)

[via cfe-commits]

Author: owenca
Date: 2026-02-10T06:22:13Z
New Revision: 2302110838463736b0512b4d7fbd94c4694f66d0

URL: https://github.com/llvm/llvm-project/commit/2302110838463736b0512b4d7fbd94c4694f66d0
DIFF: https://github.com/llvm/llvm-project/commit/2302110838463736b0512b4d7fbd94c4694f66d0.diff

LOG: [clang-format] Don't annotate C compound literal r_paren (#180436)

Fixes #180179

Added: 
    

Modified: 
    clang/lib/Format/TokenAnnotator.cpp
    clang/unittests/Format/TokenAnnotatorTest.cpp

Removed: 
    


################################################################################
diff  --git a/clang/lib/Format/TokenAnnotator.cpp b/clang/lib/Format/TokenAnnotator.cpp
index b1c1afbf8684d..9e54c3f253abb 100644
--- a/clang/lib/Format/TokenAnnotator.cpp
+++ b/clang/lib/Format/TokenAnnotator.cpp
@@ -2921,7 +2921,9 @@ class AnnotatingParser {
     if (!AfterRParen->Next)
       return false;
 
-    if (AfterRParen->is(tok::l_brace) &&
+    // A pair of parentheses before an l_brace in C starts a compound literal
+    // and is not a cast.
+    if (Style.Language != FormatStyle::LK_C && AfterRParen->is(tok::l_brace) &&
         AfterRParen->getBlockKind() == BK_BracedInit) {
       return true;
     }

diff  --git a/clang/unittests/Format/TokenAnnotatorTest.cpp b/clang/unittests/Format/TokenAnnotatorTest.cpp
index b3e127c3eb6ba..defd78aedfd70 100644
--- a/clang/unittests/Format/TokenAnnotatorTest.cpp
+++ b/clang/unittests/Format/TokenAnnotatorTest.cpp
@@ -964,6 +964,14 @@ TEST_F(TokenAnnotatorTest, UnderstandsCasts) {
   EXPECT_TOKEN(Tokens[11], tok::amp, TT_UnaryOperator);
 }
 
+TEST_F(TokenAnnotatorTest, CompoundLiteral) {
+  auto Tokens =
+      annotate("return (struct foo){};", getLLVMStyle(FormatStyle::LK_C));
+  ASSERT_EQ(Tokens.size(), 9u) << Tokens;
+  // Not TT_CastRParen.
+  EXPECT_TOKEN(Tokens[4], tok::r_paren, TT_Unknown);
+}
+
 TEST_F(TokenAnnotatorTest, UnderstandsDynamicExceptionSpecifier) {
   auto Tokens = annotate("void f() throw(int);");
   ASSERT_EQ(Tokens.size(), 10u) << Tokens;