[clang-format] Handle requires clause following a pointer type (llvm#142893)

Fix llvm#142818

Author: owenca

clang/lib/Format/UnwrappedLineParser.cpp

@@ -3485,6 +3485,7 @@ bool UnwrappedLineParser::parseRequires(bool SeenEqual) {
   case tok::r_paren:
   case tok::kw_noexcept:
   case tok::kw_const:
+  case tok::star:
   case tok::amp:
     // This is a requires clause.
     parseRequiresClause(RequiresToken);

clang/unittests/Format/TokenAnnotatorTest.cpp

@@ -1453,6 +1453,15 @@ TEST_F(TokenAnnotatorTest, UnderstandsRequiresClausesAndConcepts) {
   ASSERT_EQ(Tokens.size(), 17u) << Tokens;
   EXPECT_TOKEN(Tokens[4], tok::ampamp, TT_PointerOrReference);
   EXPECT_TOKEN(Tokens[5], tok::kw_requires, TT_RequiresClause);
+
+  Tokens = annotate("auto foo() -> auto *\n"
+                    "  requires(not bar)\n"
+                    "{\n"
+                    "  return baz;\n"
+                    "}");
+  ASSERT_EQ(Tokens.size(), 18u) << Tokens;
+  EXPECT_TOKEN(Tokens[7], tok::kw_requires, TT_RequiresClause);
+  EXPECT_TOKEN(Tokens[12], tok::l_brace, TT_FunctionLBrace);
 }
 
 TEST_F(TokenAnnotatorTest, UnderstandsRequiresExpressions) {