[clang-format] Correctly identify token-pasted record names

[owenca]

See #89706 (comment).

[owenca]

See #106484 (comment).

[llvmbot]

@llvm/pr-subscribers-clang-format

Author: Owen Pan (owenca)

Changes

See #89706 (comment).

---

Full diff: https://github.com/llvm/llvm-project/pull/106897.diff

2 Files Affected:

• (modified) clang/lib/Format/UnwrappedLineParser.cpp (+1)
• (modified) clang/unittests/Format/TokenAnnotatorTest.cpp (+10)

diff --git a/clang/lib/Format/UnwrappedLineParser.cpp b/clang/lib/Format/UnwrappedLineParser.cpp
index 53ddb710d2143b..7f5d157ae95891 100644
--- a/clang/lib/Format/UnwrappedLineParser.cpp
+++ b/clang/lib/Format/UnwrappedLineParser.cpp
@@ -4016,6 +4016,7 @@ void UnwrappedLineParser::parseRecord(bool ParseAsExpr) {
       }
       break;
     case tok::coloncolon:
+    case tok::hashhash:
       break;
     default:
       if (!JSPastExtendsOrImplements && !ClassName &&
diff --git a/clang/unittests/Format/TokenAnnotatorTest.cpp b/clang/unittests/Format/TokenAnnotatorTest.cpp
index 81e2628f28e583..f0533c92f6538c 100644
--- a/clang/unittests/Format/TokenAnnotatorTest.cpp
+++ b/clang/unittests/Format/TokenAnnotatorTest.cpp
@@ -3208,6 +3208,16 @@ TEST_F(TokenAnnotatorTest, BraceKind) {
   ASSERT_EQ(Tokens.size(), 11u) << Tokens;
   EXPECT_TOKEN(Tokens[7], tok::l_brace, TT_ClassLBrace);
   EXPECT_BRACE_KIND(Tokens[7], BK_Block);
+  EXPECT_TOKEN(Tokens[8], tok::r_brace, TT_ClassRBrace);
+  EXPECT_BRACE_KIND(Tokens[8], BK_Block);
+
+  Tokens = annotate("#define FOO(X) \\\n"
+                    "  struct X##_tag_ {};");
+  ASSERT_EQ(Tokens.size(), 14u) << Tokens;
+  EXPECT_TOKEN(Tokens[10], tok::l_brace, TT_StructLBrace);
+  EXPECT_BRACE_KIND(Tokens[10], BK_Block);
+  EXPECT_TOKEN(Tokens[11], tok::r_brace, TT_StructRBrace);
+  EXPECT_BRACE_KIND(Tokens[11], BK_Block);
 }
 
 TEST_F(TokenAnnotatorTest, UnderstandsElaboratedTypeSpecifier) {