[clang-format] Handle AttributeMacros in parseRecord() (#94189)

Fixes #94184.

Author: owenca

clang/lib/Format/UnwrappedLineParser.cpp

@@ -3993,8 +3993,10 @@ void UnwrappedLineParser::parseRecord(bool ParseAsExpr) {
     case tok::coloncolon:
       break;
     default:
-      if (!ClassName && Previous->is(tok::identifier))
+      if (!ClassName && Previous->is(tok::identifier) &&
+          Previous->isNot(TT_AttributeMacro)) {
         ClassName = Previous;
+      }
     }
   }
 

clang/unittests/Format/TokenAnnotatorTest.cpp

@@ -493,6 +493,14 @@ TEST_F(TokenAnnotatorTest, UnderstandsStructs) {
   Tokens = annotate("template <typename T, enum E e> struct S {};");
   ASSERT_EQ(Tokens.size(), 15u) << Tokens;
   EXPECT_TOKEN(Tokens[11], tok::l_brace, TT_StructLBrace);
+
+  auto Style = getLLVMStyle();
+  Style.AttributeMacros.push_back("EXPORT");
+  Tokens = annotate("struct EXPORT StructName {};", Style);
+  ASSERT_EQ(Tokens.size(), 7u) << Tokens;
+  EXPECT_TOKEN(Tokens[1], tok::identifier, TT_AttributeMacro);
+  EXPECT_TOKEN(Tokens[3], tok::l_brace, TT_StructLBrace);
+  EXPECT_TOKEN(Tokens[4], tok::r_brace, TT_StructRBrace);
 }
 
 TEST_F(TokenAnnotatorTest, UnderstandsUnions) {