From 059b85e7ffb1d411b0d0a220c4c766e98a35be7f Mon Sep 17 00:00:00 2001
From: Aaron Ballman <aaron@aaronballman.com>
Date: Tue, 11 Dec 2018 16:34:59 +0000
Subject: [PATCH] Adding tests for -ast-dump; NFC.

This adds tests for expressions in C++.

llvm-svn: 348860
---
 clang/test/AST/ast-dump-expr.cpp | 510 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 510 insertions(+)
 create mode 100644 clang/test/AST/ast-dump-expr.cpp

diff --git a/clang/test/AST/ast-dump-expr.cpp b/clang/test/AST/ast-dump-expr.cpp
new file mode 100644
index 0000000..e847fc6
--- /dev/null
+++ b/clang/test/AST/ast-dump-expr.cpp
@@ -0,0 +1,510 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-unknown -Wno-unused-value -fcxx-exceptions -std=gnu++17 -ast-dump %s | FileCheck -strict-whitespace %s
+
+namespace std {
+using size_t = decltype(sizeof(0));
+
+class type_info {
+public:
+  virtual ~type_info();
+  bool operator==(const type_info& rhs) const noexcept;
+  bool operator!=(const type_info& rhs) const noexcept;
+  type_info(const type_info& rhs) = delete; // cannot be copied
+  type_info& operator=(const type_info& rhs) = delete; // cannot be copied
+};
+
+class bad_typeid {
+public:
+  bad_typeid() noexcept;
+  bad_typeid(const bad_typeid&) noexcept;
+  virtual ~bad_typeid();
+  bad_typeid& operator=(const bad_typeid&) noexcept;
+  const char* what() const noexcept;
+};
+} // namespace std
+void *operator new(std::size_t, void *ptr);
+
+struct S {
+  virtual ~S() = default;
+
+  void func(int);
+  template <typename Ty>
+  Ty foo();
+
+  int i;
+};
+
+struct T : S {};
+
+template <typename>
+struct U {};
+
+void Throw() {
+  throw 12;
+  // CHECK: CXXThrowExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:9> 'void'
+  // CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:9> 'int' 12
+
+  throw;
+  // CHECK: CXXThrowExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3> 'void'
+}
+
+void PointerToMember(S obj1, S *obj2, int S::* data, void (S::*call)(int)) {
+  obj1.*data;
+  // CHECK: BinaryOperator 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:9> 'int' lvalue '.*'
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'S' lvalue ParmVar 0x{{[^ ]*}} 'obj1' 'S'
+  // CHECK-NEXT: ImplicitCastExpr
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:9> 'int S::*' lvalue ParmVar 0x{{[^ ]*}} 'data' 'int S::*'
+
+  obj2->*data;
+  // CHECK: BinaryOperator 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:10> 'int' lvalue '->*'
+  // CHECK-NEXT: ImplicitCastExpr
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'S *' lvalue ParmVar 0x{{[^ ]*}} 'obj2' 'S *'
+  // CHECK-NEXT: ImplicitCastExpr
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:10> 'int S::*' lvalue ParmVar 0x{{[^ ]*}} 'data' 'int S::*'
+
+  (obj1.*call)(12);
+  // CHECK: CXXMemberCallExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:18> 'void'
+  // CHECK-NEXT: ParenExpr 0x{{[^ ]*}} <col:3, col:14> '<bound member function type>'
+  // CHECK-NEXT: BinaryOperator 0x{{[^ ]*}} <col:4, col:10> '<bound member function type>' '.*'
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:4> 'S' lvalue ParmVar 0x{{[^ ]*}} 'obj1' 'S'
+  // CHECK-NEXT: ImplicitCastExpr
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:10> 'void (S::*)(int)' lvalue ParmVar 0x{{[^ ]*}} 'call' 'void (S::*)(int)'
+  // CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:16> 'int' 12
+
+  (obj2->*call)(12);
+  // CHECK: CXXMemberCallExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:19> 'void'
+  // CHECK-NEXT: ParenExpr 0x{{[^ ]*}} <col:3, col:15> '<bound member function type>'
+  // CHECK-NEXT: BinaryOperator 0x{{[^ ]*}} <col:4, col:11> '<bound member function type>' '->*'
+  // CHECK-NEXT: ImplicitCastExpr
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:4> 'S *' lvalue ParmVar 0x{{[^ ]*}} 'obj2' 'S *'
+  // CHECK-NEXT: ImplicitCastExpr
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:11> 'void (S::*)(int)' lvalue ParmVar 0x{{[^ ]*}} 'call' 'void (S::*)(int)'
+  // CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:17> 'int' 12
+}
+
+void Casting(const S *s) {
+  // FIXME: The cast expressions contain "struct S" instead of "S".
+
+  const_cast<S *>(s);
+  // CHECK: CXXConstCastExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:20> 'S *' const_cast<struct S *> <NoOp>
+  // CHECK-NEXT: ImplicitCastExpr 0x{{[^ ]*}} <col:19> 'const S *' <LValueToRValue> part_of_explicit_cast
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:19> 'const S *' lvalue ParmVar 0x{{[^ ]*}} 's' 'const S *'
+
+  static_cast<const T *>(s);
+  // CHECK: CXXStaticCastExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:27> 'const T *' static_cast<const struct T *> <BaseToDerived (S)>
+  // CHECK-NEXT: ImplicitCastExpr 0x{{[^ ]*}} <col:26> 'const S *' <LValueToRValue> part_of_explicit_cast
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:26> 'const S *' lvalue ParmVar 0x{{[^ ]*}} 's' 'const S *'
+
+  dynamic_cast<const T *>(s);
+  // CHECK: CXXDynamicCastExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:28> 'const T *' dynamic_cast<const struct T *> <Dynamic>
+  // CHECK-NEXT: ImplicitCastExpr 0x{{[^ ]*}} <col:27> 'const S *' <LValueToRValue> part_of_explicit_cast
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:27> 'const S *' lvalue ParmVar 0x{{[^ ]*}} 's' 'const S *'
+
+  reinterpret_cast<const int *>(s);
+  // CHECK: CXXReinterpretCastExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:34> 'const int *' reinterpret_cast<const int *> <BitCast>
+  // CHECK-NEXT: ImplicitCastExpr 0x{{[^ ]*}} <col:33> 'const S *' <LValueToRValue> part_of_explicit_cast
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:33> 'const S *' lvalue ParmVar 0x{{[^ ]*}} 's' 'const S *'
+}
+
+template <typename... Ts>
+void UnaryExpressions(int *p) {
+  sizeof...(Ts);
+  // CHECK: SizeOfPackExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:15> 'unsigned long' 0x{{[^ ]*}} Ts
+
+  noexcept(p - p);
+  // CHECK: CXXNoexceptExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:17> 'bool'
+  // CHECK-NEXT: BinaryOperator 0x{{[^ ]*}} <col:12, col:16> 'long' '-'
+  // CHECK-NEXT: ImplicitCastExpr
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:12> 'int *' lvalue ParmVar 0x{{[^ ]*}} 'p' 'int *'
+  // CHECK-NEXT: ImplicitCastExpr
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:16> 'int *' lvalue ParmVar 0x{{[^ ]*}} 'p' 'int *'
+
+  ::new int;
+  // CHECK: CXXNewExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:9> 'int *' global Function 0x{{[^ ]*}} 'operator new' 'void *(unsigned long)'
+
+  new (int);
+  // CHECK: CXXNewExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:11> 'int *' Function 0x{{[^ ]*}} 'operator new' 'void *(unsigned long)'
+
+  new int{12};
+  // CHECK: CXXNewExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:13> 'int *' Function 0x{{[^ ]*}} 'operator new' 'void *(unsigned long)'
+  // CHECK-NEXT: InitListExpr 0x{{[^ ]*}} <col:10, col:13> 'int'
+  // CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:11> 'int' 12
+
+  new int[2];
+  // CHECK: CXXNewExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:12> 'int *' array Function 0x{{[^ ]*}} 'operator new[]' 'void *(unsigned long)'
+  // CHECK-NEXT: ImplicitCastExpr
+  // CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:11> 'int' 2
+
+  new int[2]{1, 2};
+  // CHECK: CXXNewExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:18> 'int *' array Function 0x{{[^ ]*}} 'operator new[]' 'void *(unsigned long)'
+  // CHECK-NEXT: ImplicitCastExpr
+  // CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:11> 'int' 2
+  // CHECK-NEXT: InitListExpr 0x{{[^ ]*}} <col:13, col:18> 'int [2]'
+  // CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:14> 'int' 1
+  // CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:17> 'int' 2
+
+  new (p) int;
+  // CHECK: CXXNewExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:11> 'int *' Function 0x{{[^ ]*}} 'operator new' 'void *(std::size_t, void *)'
+  // CHECK-NEXT: ImplicitCastExpr {{.*}} 'void *' <BitCast>
+  // CHECK-NEXT: ImplicitCastExpr {{.*}} 'int *' <LValueToRValue>
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:8> 'int *' lvalue ParmVar 0x{{[^ ]*}} 'p' 'int *'
+
+  new (p) int{12};
+  // CHECK: CXXNewExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:17> 'int *' Function 0x{{[^ ]*}} 'operator new' 'void *(std::size_t, void *)'
+  // CHECK-NEXT: InitListExpr 0x{{[^ ]*}} <col:14, col:17> 'int'
+  // CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:15> 'int' 12
+  // CHECK-NEXT: ImplicitCastExpr {{.*}} 'void *' <BitCast>
+  // CHECK-NEXT: ImplicitCastExpr {{.*}} 'int *' <LValueToRValue>
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:8> 'int *' lvalue ParmVar 0x{{[^ ]*}} 'p' 'int *'
+
+  ::delete p;
+  // CHECK: CXXDeleteExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:12> 'void' global Function 0x{{[^ ]*}} 'operator delete' 'void (void *) noexcept'
+  // CHECK-NEXT: ImplicitCastExpr
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:12> 'int *' lvalue ParmVar 0x{{[^ ]*}} 'p' 'int *'
+
+  delete [] p;
+  // CHECK: CXXDeleteExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:13> 'void' array Function 0x{{[^ ]*}} 'operator delete[]' 'void (void *) noexcept'
+  // CHECK-NEXT: ImplicitCastExpr
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:13> 'int *' lvalue ParmVar 0x{{[^ ]*}} 'p' 'int *'
+}
+
+void PostfixExpressions(S a, S *p, U<int> *r) {
+  a.func(0);
+  // CHECK: CXXMemberCallExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:11> 'void'
+  // CHECK-NEXT: MemberExpr 0x{{[^ ]*}} <col:3, col:5> '<bound member function type>' .func 0x{{[^ ]*}}
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'S' lvalue ParmVar 0x{{[^ ]*}} 'a' 'S'
+  // CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:10> 'int' 0
+
+  p->func(0);
+  // CHECK: CXXMemberCallExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:12> 'void'
+  // CHECK-NEXT: MemberExpr 0x{{[^ ]*}} <col:3, col:6> '<bound member function type>' ->func 0x{{[^ ]*}}
+  // CHECK-NEXT: ImplicitCastExpr
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'S *' lvalue ParmVar 0x{{[^ ]*}} 'p' 'S *'
+  // CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:11> 'int' 0
+
+  // FIXME: there is no mention that this used the template keyword.
+  p->template foo<int>();
+  // CHECK: CXXMemberCallExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:24> 'int':'int'
+  // CHECK-NEXT: MemberExpr 0x{{[^ ]*}} <col:3, col:22> '<bound member function type>' ->foo 0x{{[^ ]*}}
+  // CHECK-NEXT: ImplicitCastExpr
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'S *' lvalue ParmVar 0x{{[^ ]*}} 'p' 'S *'
+
+  // FIXME: there is no mention that this used the template keyword.
+  a.template foo<float>();
+  // CHECK: CXXMemberCallExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:25> 'float':'float'
+  // CHECK-NEXT: MemberExpr 0x{{[^ ]*}} <col:3, col:23> '<bound member function type>' .foo 0x{{[^ ]*}}
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'S' lvalue ParmVar 0x{{[^ ]*}} 'a' 'S'
+
+  p->~S();
+  // CHECK: CXXMemberCallExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:9> 'void'
+  // CHECK-NEXT: MemberExpr 0x{{[^ ]*}} <col:3, col:7> '<bound member function type>' ->~S 0x{{[^ ]*}}
+  // CHECK-NEXT: ImplicitCastExpr
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'S *' lvalue ParmVar 0x{{[^ ]*}} 'p' 'S *'
+
+  a.~S();
+  // CHECK: CXXMemberCallExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:8> 'void'
+  // CHECK-NEXT: MemberExpr 0x{{[^ ]*}} <col:3, col:6> '<bound member function type>' .~S 0x{{[^ ]*}}
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'S' lvalue ParmVar 0x{{[^ ]*}} 'a' 'S'
+
+  // FIXME: there seems to be no way to distinguish the construct below from
+  // the construct above.
+  a.~decltype(a)();
+  // CHECK: CXXMemberCallExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:18> 'void'
+  // CHECK-NEXT: MemberExpr 0x{{[^ ]*}} <col:3, col:5> '<bound member function type>' .~S 0x{{[^ ]*}}
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'S' lvalue ParmVar 0x{{[^ ]*}} 'a' 'S'
+
+  // FIXME: similarly, there is no way to distinguish the construct below from
+  // the p->~S() case.
+  p->::S::~S();
+  // CHECK: CXXMemberCallExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:14> 'void'
+  // CHECK-NEXT: MemberExpr 0x{{[^ ]*}} <col:3, col:12> '<bound member function type>' ->~S 0x{{[^ ]*}}
+  // CHECK-NEXT: ImplicitCastExpr
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'S *' lvalue ParmVar 0x{{[^ ]*}} 'p' 'S *'
+
+  // FIXME: there is no mention that this used the template keyword.
+  r->template U<int>::~U();
+  // CHECK: CXXMemberCallExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:26> 'void'
+  // CHECK-NEXT: MemberExpr 0x{{[^ ]*}} <col:3, col:24> '<bound member function type>' ->~U 0x{{[^ ]*}}
+  // CHECK-NEXT: ImplicitCastExpr
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'U<int> *' lvalue ParmVar 0x{{[^ ]*}} 'r' 'U<int> *'
+
+  typeid(a);
+  // CHECK: CXXTypeidExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:11> 'const std::type_info' lvalue
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:10> 'S' lvalue ParmVar 0x{{[^ ]*}} 'a' 'S'
+
+  // FIXME: no type information is printed for the argument.
+  typeid(S);
+  // CHECK: CXXTypeidExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:11> 'const std::type_info' lvalue
+}
+
+template <typename... Ts>
+void PrimaryExpressions(Ts... a) {
+  struct V {
+    void f() {
+      this;
+      // CHECK: CXXThisExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:7> 'V *' this
+      [this]{};
+      // CHECK: LambdaExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:7, col:14>
+      // CHECK-NEXT: CXXRecordDecl 0x{{[^ ]*}} <col:7> col:7 implicit class definition
+      // CHECK-NEXT: DefinitionData lambda
+      // CHECK-NEXT: DefaultConstructor
+      // CHECK-NEXT: CopyConstructor
+      // CHECK-NEXT: MoveConstructor
+      // CHECK-NEXT: CopyAssignment
+      // CHECK-NEXT: MoveAssignment
+      // CHECK-NEXT: Destructor
+      // CHECK-NEXT: FieldDecl 0x{{[^ ]*}} <col:8> col:8 implicit 'V *'
+      // CHECK-NEXT: CXXMethodDecl
+      // CHECK-NEXT: CompoundStmt
+      // CHECK-NEXT: CXXThisExpr 0x{{[^ ]*}} <col:8> 'V *' this
+
+      [*this]{};
+      // CHECK: LambdaExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:7, col:15>
+      // CHECK-NEXT: CXXRecordDecl 0x{{[^ ]*}} <col:7> col:7 implicit class definition
+      // CHECK-NEXT: DefinitionData lambda
+      // CHECK-NEXT: DefaultConstructor
+      // CHECK-NEXT: CopyConstructor
+      // CHECK-NEXT: MoveConstructor
+      // CHECK-NEXT: CopyAssignment
+      // CHECK-NEXT: MoveAssignment
+      // CHECK-NEXT: Destructor
+      // CHECK-NEXT: FieldDecl 0x{{[^ ]*}} <col:8> col:8 implicit 'V'
+      // CHECK-NEXT: CXXMethodDecl
+      // CHECK-NEXT: CompoundStmt
+      // CHECK-NEXT: ParenListExpr 0x{{[^ ]*}} <col:8> 'NULL TYPE'
+      // CHECK-NEXT: UnaryOperator 0x{{[^ ]*}} <col:8> '<dependent type>' prefix '*' cannot overflow
+      // CHECK-NEXT: CXXThisExpr 0x{{[^ ]*}} <col:8> 'V *' this
+    }
+  };
+
+  int b, c;
+
+  [](){};
+  // CHECK: LambdaExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:8> '(lambda at {{.*}}:[[@LINE-1]]:3)'
+  // CHECK-NEXT: CXXRecordDecl 0x{{[^ ]*}} <col:3> col:3 implicit class definition
+  // CHECK-NEXT: DefinitionData lambda
+  // CHECK-NEXT: DefaultConstructor
+  // CHECK-NEXT: CopyConstructor
+  // CHECK-NEXT: MoveConstructor
+  // CHECK-NEXT: CopyAssignment
+  // CHECK-NEXT: MoveAssignment
+  // CHECK-NEXT: Destructor
+  // CHECK-NEXT: CXXMethodDecl 0x{{[^ ]*}} <col:6, col:8> col:3 operator() 'auto () const' inline
+  // CHECK-NEXT: CompoundStmt
+  // CHECK-NEXT: CXXConversionDecl 0x{{[^ ]*}} <col:3, col:8> col:3 implicit constexpr operator auto (*)() 'auto (*() const)()' inline
+  // CHECK-NEXT: CXXMethodDecl 0x{{[^ ]*}} <col:3, col:8> col:3 implicit __invoke 'auto ()' static inline
+  // CHECK-NEXT: CompoundStmt 0x{{[^ ]*}} <col:7, col:8>
+
+  [a...]{};
+  // CHECK: LambdaExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:10> '(lambda at {{.*}}:[[@LINE-1]]:3)'
+  // CHECK-NEXT: CXXRecordDecl 0x{{[^ ]*}} <col:3> col:3 implicit class definition
+  // CHECK-NEXT: DefinitionData lambda
+  // CHECK-NEXT: DefaultConstructor
+  // CHECK-NEXT: CopyConstructor
+  // CHECK-NEXT: MoveConstructor
+  // CHECK-NEXT: CopyAssignment
+  // CHECK-NEXT: MoveAssignment
+  // CHECK-NEXT: Destructor
+  // CHECK-NEXT: FieldDecl 0x{{[^ ]*}} <col:4> col:4 implicit 'Ts...'
+  // CHECK-NEXT: CXXMethodDecl 0x{{[^ ]*}} <col:8, col:10> col:3 operator() 'auto () const -> auto' inline
+  // CHECK-NEXT: CompoundStmt
+  // CHECK-NEXT: ParenListExpr 0x{{[^ ]*}} <col:4> 'NULL TYPE'
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:4> 'Ts...' lvalue ParmVar 0x{{[^ ]*}} 'a' 'Ts...'
+  // CHECK-NEXT: CompoundStmt 0x{{[^ ]*}} <col:9, col:10>
+
+  [=]{};
+  // CHECK: LambdaExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:7> '(lambda at {{.*}}:[[@LINE-1]]:3)'
+  // CHECK-NEXT: CXXRecordDecl 0x{{[^ ]*}} <col:3> col:3 implicit class definition
+  // CHECK-NEXT: DefinitionData lambda
+  // CHECK-NEXT: DefaultConstructor
+  // CHECK-NEXT: CopyConstructor
+  // CHECK-NEXT: MoveConstructor
+  // CHECK-NEXT: CopyAssignment
+  // CHECK-NEXT: MoveAssignment
+  // CHECK-NEXT: Destructor
+  // CHECK-NEXT: CXXMethodDecl 0x{{[^ ]*}} <col:5, col:7> col:3 operator() 'auto () const -> auto' inline
+  // CHECK-NEXT: CompoundStmt
+  // CHECK-NEXT: CompoundStmt 0x{{[^ ]*}} <col:6, col:7>
+
+  [=] { return b; };
+  // CHECK: LambdaExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:19> '(lambda at {{.*}}:[[@LINE-1]]:3)'
+  // CHECK-NEXT: CXXRecordDecl 0x{{[^ ]*}} <col:3> col:3 implicit class definition
+  // CHECK-NEXT: DefinitionData lambda
+  // CHECK-NEXT: DefaultConstructor
+  // CHECK-NEXT: CopyConstructor
+  // CHECK-NEXT: MoveConstructor
+  // CHECK-NEXT: CopyAssignment
+  // CHECK-NEXT: MoveAssignment
+  // CHECK-NEXT: Destructor
+  // CHECK-NEXT: CXXMethodDecl 0x{{[^ ]*}} <col:5, col:19> col:3 operator() 'auto () const -> auto' inline
+  // CHECK-NEXT: CompoundStmt
+  // CHECK-NEXT: ReturnStmt 0x{{[^ ]*}} <col:9, col:16>
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:16> 'const int' lvalue Var 0x{{[^ ]*}} 'b' 'int'
+  // CHECK-NEXT: CompoundStmt 0x{{[^ ]*}} <col:7, col:19>
+  // CHECK-NEXT: ReturnStmt 0x{{[^ ]*}} <col:9, col:16>
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:16> 'const int' lvalue Var 0x{{[^ ]*}} 'b' 'int'
+
+  [&]{};
+  // CHECK: LambdaExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:7> '(lambda at {{.*}}:[[@LINE-1]]:3)'
+  // CHECK-NEXT: CXXRecordDecl 0x{{[^ ]*}} <col:3> col:3 implicit class definition
+  // CHECK-NEXT: DefinitionData lambda
+  // CHECK-NEXT: DefaultConstructor
+  // CHECK-NEXT: CopyConstructor
+  // CHECK-NEXT: MoveConstructor
+  // CHECK-NEXT: CopyAssignment
+  // CHECK-NEXT: MoveAssignment
+  // CHECK-NEXT: Destructor
+  // CHECK-NEXT: CXXMethodDecl 0x{{[^ ]*}} <col:5, col:7> col:3 operator() 'auto () const -> auto' inline
+  // CHECK-NEXT: CompoundStmt
+  // CHECK-NEXT: CompoundStmt 0x{{[^ ]*}} <col:6, col:7>
+
+  [&] { return c; };
+  // CHECK: LambdaExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:19> '(lambda at {{.*}}:[[@LINE-1]]:3)'
+  // CHECK-NEXT: CXXRecordDecl 0x{{[^ ]*}} <col:3> col:3 implicit class definition
+  // CHECK-NEXT: DefinitionData lambda
+  // CHECK-NEXT: DefaultConstructor
+  // CHECK-NEXT: CopyConstructor
+  // CHECK-NEXT: MoveConstructor
+  // CHECK-NEXT: CopyAssignment
+  // CHECK-NEXT: MoveAssignment
+  // CHECK-NEXT: Destructor
+  // CHECK-NEXT: CXXMethodDecl 0x{{[^ ]*}} <col:5, col:19> col:3 operator() 'auto () const -> auto' inline
+  // CHECK-NEXT: CompoundStmt
+  // CHECK-NEXT: ReturnStmt 0x{{[^ ]*}} <col:9, col:16>
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:16> 'int' lvalue Var 0x{{[^ ]*}} 'c' 'int'
+  // CHECK-NEXT: CompoundStmt 0x{{[^ ]*}} <col:7, col:19>
+  // CHECK-NEXT: ReturnStmt 0x{{[^ ]*}} <col:9, col:16>
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:16> 'int' lvalue Var 0x{{[^ ]*}} 'c' 'int'
+
+  [b, &c]{ return b + c; };
+  // CHECK: LambdaExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:26> '(lambda at {{.*}}:[[@LINE-1]]:3)'
+  // CHECK-NEXT: CXXRecordDecl 0x{{[^ ]*}} <col:3> col:3 implicit class definition
+  // CHECK-NEXT: DefinitionData lambda
+  // CHECK-NEXT: DefaultConstructor
+  // CHECK-NEXT: CopyConstructor
+  // CHECK-NEXT: MoveConstructor
+  // CHECK-NEXT: CopyAssignment
+  // CHECK-NEXT: MoveAssignment
+  // CHECK-NEXT: Destructor
+  // CHECK-NEXT: FieldDecl 0x{{[^ ]*}} <col:4> col:4 implicit 'int'
+  // CHECK-NEXT: FieldDecl 0x{{[^ ]*}} <col:8> col:8 implicit 'int &'
+  // CHECK-NEXT: CXXMethodDecl 0x{{[^ ]*}} <col:9, col:26> col:3 operator() 'auto () const -> auto' inline
+  // CHECK-NEXT: CompoundStmt
+  // CHECK-NEXT: ReturnStmt 0x{{[^ ]*}} <col:12, col:23>
+  // CHECK-NEXT: BinaryOperator 0x{{[^ ]*}} <col:19, col:23> 'int' '+'
+  // CHECK-NEXT: ImplicitCastExpr
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:19> 'const int' lvalue Var 0x{{[^ ]*}} 'b' 'int'
+  // CHECK-NEXT: ImplicitCastExpr
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:23> 'int' lvalue Var 0x{{[^ ]*}} 'c' 'int'
+  // CHECK-NEXT: ImplicitCastExpr
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:4> 'int' lvalue Var 0x{{[^ ]*}} 'b' 'int'
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:8> 'int' lvalue Var 0x{{[^ ]*}} 'c' 'int'
+  // CHECK-NEXT: CompoundStmt 0x{{[^ ]*}} <col:10, col:26>
+  // CHECK-NEXT: ReturnStmt 0x{{[^ ]*}} <col:12, col:23>
+  // CHECK-NEXT: BinaryOperator 0x{{[^ ]*}} <col:19, col:23> 'int' '+'
+  // CHECK-NEXT: ImplicitCastExpr
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:19> 'const int' lvalue Var 0x{{[^ ]*}} 'b' 'int'
+  // CHECK-NEXT: ImplicitCastExpr
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:23> 'int' lvalue Var 0x{{[^ ]*}} 'c' 'int'
+
+  [a..., x = 12]{};
+  // CHECK: LambdaExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:18> '(lambda at {{.*}}:[[@LINE-1]]:3)'
+  // CHECK-NEXT: CXXRecordDecl 0x{{[^ ]*}} <col:3> col:3 implicit class definition
+  // CHECK-NEXT: DefinitionData lambda
+  // CHECK-NEXT: DefaultConstructor
+  // CHECK-NEXT: CopyConstructor
+  // CHECK-NEXT: MoveConstructor
+  // CHECK-NEXT: CopyAssignment
+  // CHECK-NEXT: MoveAssignment
+  // CHECK-NEXT: Destructor
+  // CHECK-NEXT: FieldDecl 0x{{[^ ]*}} <col:4> col:4 implicit 'Ts...'
+  // CHECK-NEXT: FieldDecl 0x{{[^ ]*}} <col:10> col:10 implicit 'int':'int'
+  // CHECK-NEXT: CXXMethodDecl 0x{{[^ ]*}} <col:16, col:18> col:3 operator() 'auto () const -> auto' inline
+  // CHECK-NEXT: CompoundStmt
+  // CHECK-NEXT: ParenListExpr 0x{{[^ ]*}} <col:4> 'NULL TYPE'
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:4> 'Ts...' lvalue ParmVar 0x{{[^ ]*}} 'a' 'Ts...'
+  // CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:14> 'int' 12
+  // CHECK-NEXT: CompoundStmt 0x{{[^ ]*}} <col:17, col:18>
+
+  []() constexpr {};
+  // CHECK: LambdaExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:19> '(lambda at {{.*}}:[[@LINE-1]]:3)'
+  // CHECK-NEXT: CXXRecordDecl 0x{{[^ ]*}} <col:3> col:3 implicit class definition
+  // CHECK-NEXT: DefinitionData lambda
+  // CHECK-NEXT: DefaultConstructor
+  // CHECK-NEXT: CopyConstructor
+  // CHECK-NEXT: MoveConstructor
+  // CHECK-NEXT: CopyAssignment
+  // CHECK-NEXT: MoveAssignment
+  // CHECK-NEXT: Destructor
+  // CHECK-NEXT: CXXMethodDecl 0x{{[^ ]*}} <col:8, col:19> col:3 constexpr operator() 'auto () const' inline
+  // CHECK-NEXT: CompoundStmt
+  // CHECK-NEXT: CXXConversionDecl 0x{{[^ ]*}} <col:3, col:19> col:3 implicit constexpr operator auto (*)() 'auto (*() const)()' inline
+  // CHECK-NEXT: CXXMethodDecl 0x{{[^ ]*}} <col:3, col:19> col:3 implicit __invoke 'auto ()' static inline
+  // CHECK-NEXT: CompoundStmt 0x{{[^ ]*}} <col:18, col:19>
+
+  []() mutable {};
+  // CHECK: LambdaExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:17> '(lambda at {{.*}}:[[@LINE-1]]:3)'
+  // CHECK-NEXT: CXXRecordDecl 0x{{[^ ]*}} <col:3> col:3 implicit class definition
+  // CHECK-NEXT: DefinitionData lambda
+  // CHECK-NEXT: DefaultConstructor
+  // CHECK-NEXT: CopyConstructor
+  // CHECK-NEXT: MoveConstructor
+  // CHECK-NEXT: CopyAssignment
+  // CHECK-NEXT: MoveAssignment
+  // CHECK-NEXT: Destructor
+  // CHECK-NEXT: CXXMethodDecl 0x{{[^ ]*}} <col:8, col:17> col:3 operator() 'auto ()' inline
+  // CHECK-NEXT: CompoundStmt
+  // CHECK-NEXT: CXXConversionDecl 0x{{[^ ]*}} <col:3, col:17> col:3 implicit constexpr operator auto (*)() 'auto (*() const)()' inline
+  // CHECK-NEXT: CXXMethodDecl 0x{{[^ ]*}} <col:3, col:17> col:3 implicit __invoke 'auto ()' static inline
+  // CHECK-NEXT: CompoundStmt 0x{{[^ ]*}} <col:16, col:17>
+
+  []() noexcept {};
+  // CHECK: LambdaExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:18> '(lambda at {{.*}}:[[@LINE-1]]:3)'
+  // CHECK-NEXT: CXXRecordDecl 0x{{[^ ]*}} <col:3> col:3 implicit class definition
+  // CHECK-NEXT: DefinitionData lambda
+  // CHECK-NEXT: DefaultConstructor
+  // CHECK-NEXT: CopyConstructor
+  // CHECK-NEXT: MoveConstructor
+  // CHECK-NEXT: CopyAssignment
+  // CHECK-NEXT: MoveAssignment
+  // CHECK-NEXT: Destructor
+  // CHECK-NEXT: CXXMethodDecl 0x{{[^ ]*}} <col:8, col:18> col:3 operator() 'auto () const noexcept' inline
+  // CHECK-NEXT: CompoundStmt
+  // CHECK-NEXT: CXXConversionDecl 0x{{[^ ]*}} <col:3, col:18> col:3 implicit constexpr operator auto (*)() noexcept 'auto (*() const)() noexcept' inline
+  // CHECK-NEXT: CXXMethodDecl 0x{{[^ ]*}} <col:3, col:18> col:3 implicit __invoke 'auto () noexcept' static inline
+  // CHECK-NEXT: CompoundStmt 0x{{[^ ]*}} <col:17, col:18>
+
+  []() -> int { return 0; };
+  // CHECK: LambdaExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:27> '(lambda at {{.*}}:[[@LINE-1]]:3)'
+  // CHECK-NEXT: CXXRecordDecl 0x{{[^ ]*}} <col:3> col:3 implicit class definition
+  // CHECK-NEXT: DefinitionData lambda
+  // CHECK-NEXT: DefaultConstructor
+  // CHECK-NEXT: CopyConstructor
+  // CHECK-NEXT: MoveConstructor
+  // CHECK-NEXT: CopyAssignment
+  // CHECK-NEXT: MoveAssignment
+  // CHECK-NEXT: Destructor
+  // CHECK-NEXT: CXXMethodDecl 0x{{[^ ]*}} <col:11, col:27> col:3 operator() 'auto () const -> int' inline
+  // CHECK-NEXT: CompoundStmt
+  // CHECK-NEXT: ReturnStmt 0x{{[^ ]*}} <col:17, col:24>
+  // CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:24> 'int' 0
+  // CHECK-NEXT: CXXConversionDecl 0x{{[^ ]*}} <col:3, col:27> col:3 implicit constexpr operator int (*)() 'auto (*() const)() -> int' inline
+  // CHECK-NEXT: CXXMethodDecl 0x{{[^ ]*}} <col:3, col:27> col:3 implicit __invoke 'auto () -> int' static inline
+  // CHECK-NEXT: CompoundStmt 0x{{[^ ]*}} <col:15, col:27>
+  // CHECK-NEXT: ReturnStmt 0x{{[^ ]*}} <col:17, col:24>
+  // CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:24> 'int' 0
+
+  (a + ...);
+  // CHECK: CXXFoldExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:11> '<dependent type>'
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:4> 'Ts...' lvalue ParmVar 0x{{[^ ]*}} 'a' 'Ts...'
+  // CHECK-NEXT: <<<NULL>>>
+
+  (... + a);
+  // CHECK: CXXFoldExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:11> '<dependent type>'
+  // CHECK-NEXT: <<<NULL>>>
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:10> 'Ts...' lvalue ParmVar 0x{{[^ ]*}} 'a' 'Ts...'
+
+  (a + ... + b);
+  // CHECK: CXXFoldExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:15> '<dependent type>'
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:4> 'Ts...' lvalue ParmVar 0x{{[^ ]*}} 'a' 'Ts...'
+  // CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:14> 'int' lvalue Var 0x{{[^ ]*}} 'b' 'int'
+}
-- 
2.7.4