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llvm-project/clang/test/AST/conditionally-trivial-smfs.cpp
David Blaikie 7846d59003 Extend the C++03 definition of POD to include defaulted functions 
The AST/conditionally-trivial-smfs tests look a bit questionable, but
are consistent with GCC's POD-ness, at least as far as packing is
concerned: https://godbolt.org/z/36nqPMbKM
(questionable because it looks like the type would be non-copyable, so
how could it be pod? But the calling convention/pass by value seems to
work correctly (local testing verifies that this behavior is preserved
even with this patch: https://godbolt.org/z/3Pa89zsv6 ))

Differential Revision: https://reviews.llvm.org/D119051
2022-10-26 22:00:49 +00:00

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// RUN: %clang_cc1 -std=c++20 -triple x86_64-pc-linux -ast-dump=json %s | FileCheck %s --check-prefixes=CHECK,LIN
// RUN: %clang_cc1 -std=c++20 -triple x86_64-pc-win32 -ast-dump=json %s | FileCheck %s
// This test validates that we compute correct AST properties of classes with
// conditionally trivial special member functions.
template <int N>
struct DefaultConstructorCheck {
DefaultConstructorCheck() requires(N == 1) = default;
DefaultConstructorCheck() requires(N == 2) = delete;
DefaultConstructorCheck() requires(N == 3);
DefaultConstructorCheck();
};
template struct DefaultConstructorCheck<1>;
// CHECK: "kind": "ClassTemplateSpecializationDecl",
// CHECK: "definitionData": {
// CHECK-NEXT: "canConstDefaultInit": true,
// CHECK-NEXT: "canPassInRegisters": true,
// CHECK-NEXT: "copyAssign": {
// CHECK: "defaultCtor": {
// CHECK-NEXT: "defaultedIsConstexpr": true,
// CHECK-NEXT: "exists": true,
// CHECK-NEXT: "isConstexpr": true,
// CHECK-NEXT: "trivial": true,
// CHECK-NEXT: "userProvided": true
// CHECK-NEXT: },
// CHECK: "hasConstexprNonCopyMoveConstructor": true,
// CHECK-NEXT: "hasUserDeclaredConstructor": true,
// CHECK-NEXT: "isEmpty": true,
// CHECK-NEXT: "isLiteral": true,
// CHECK-NEXT: "isStandardLayout": true,
// CHECK-NEXT: "isTrivial": true,
// CHECK-NEXT: "isTriviallyCopyable": true,
template struct DefaultConstructorCheck<2>;
// CHECK: "kind": "ClassTemplateSpecializationDecl",
// CHECK: "definitionData": {
// CHECK-NEXT: "canConstDefaultInit": true,
// CHECK-NEXT: "canPassInRegisters": true,
// CHECK-NEXT: "copyAssign": {
// CHECK: "defaultCtor": {
// CHECK-NEXT: "defaultedIsConstexpr": true,
// CHECK-NEXT: "exists": true,
// CHECK-NEXT: "isConstexpr": true,
// CHECK-NEXT: "trivial": true,
// CHECK-NEXT: "userProvided": true
// CHECK-NEXT: },
// CHECK: "hasConstexprNonCopyMoveConstructor": true,
// CHECK-NEXT: "hasUserDeclaredConstructor": true,
// CHECK-NEXT: "isEmpty": true,
// CHECK-NEXT: "isLiteral": true,
// CHECK-NEXT: "isStandardLayout": true,
// CHECK-NEXT: "isTrivial": true,
// CHECK-NEXT: "isTriviallyCopyable": true,
template struct DefaultConstructorCheck<3>;
// CHECK: "kind": "ClassTemplateSpecializationDecl",
// CHECK: "definitionData": {
// CHECK-NEXT: "canConstDefaultInit": true,
// CHECK-NEXT: "canPassInRegisters": true,
// CHECK-NEXT: "copyAssign": {
// CHECK: "defaultCtor": {
// CHECK-NEXT: "defaultedIsConstexpr": true,
// CHECK-NEXT: "exists": true,
// CHECK-NEXT: "isConstexpr": true,
// CHECK-NEXT: "nonTrivial": true,
// CHECK-NEXT: "userProvided": true
// CHECK-NEXT: },
// CHECK: "hasConstexprNonCopyMoveConstructor": true,
// CHECK-NEXT: "hasUserDeclaredConstructor": true,
// CHECK-NEXT: "isEmpty": true,
// CHECK-NEXT: "isLiteral": true,
// CHECK-NEXT: "isStandardLayout": true,
// CHECK-NEXT: "isTriviallyCopyable": true,
template <int N>
struct CopyConstructorCheck {
CopyConstructorCheck(const CopyConstructorCheck&) requires(N == 1) = default;
CopyConstructorCheck(const CopyConstructorCheck&) requires(N == 2) = delete;
CopyConstructorCheck(const CopyConstructorCheck&) requires(N == 3);
CopyConstructorCheck(const CopyConstructorCheck&);
};
template struct CopyConstructorCheck<1>;
// CHECK: "kind": "ClassTemplateSpecializationDecl",
// CHECK: "definitionData": {
// CHECK-NEXT: "canConstDefaultInit": true,
// CHECK-NEXT: "canPassInRegisters": true,
// CHECK-NEXT: "copyAssign": {
// CHECK: "copyCtor": {
// CHECK-NEXT: "hasConstParam": true,
// CHECK-NEXT: "implicitHasConstParam": true,
// CHECK-NEXT: "trivial": true,
// CHECK-NEXT: "userDeclared": true
// CHECK-NEXT: },
// CHECK: "hasUserDeclaredConstructor": true,
// CHECK-NEXT: "isEmpty": true,
// CHECK-NEXT: "isStandardLayout": true,
// CHECK-NEXT: "isTriviallyCopyable": true,
// CHECK-NEXT: "moveAssign": {},
template struct CopyConstructorCheck<2>;
// CHECK: "kind": "ClassTemplateSpecializationDecl",
// CHECK: "definitionData": {
// CHECK-NEXT: "canConstDefaultInit": true,
// CHECK-NEXT: "copyAssign": {
// CHECK: "copyCtor": {
// CHECK-NEXT: "hasConstParam": true,
// CHECK-NEXT: "implicitHasConstParam": true,
// CHECK-NEXT: "trivial": true,
// CHECK-NEXT: "userDeclared": true
// CHECK-NEXT: },
// CHECK: "hasUserDeclaredConstructor": true,
// CHECK-NEXT: "isEmpty": true,
// CHECK-NEXT: "isStandardLayout": true,
// CHECK-NEXT: "isTriviallyCopyable": true,
// CHECK-NEXT: "moveAssign": {},
template struct CopyConstructorCheck<3>;
// CHECK: "kind": "ClassTemplateSpecializationDecl",
// CHECK: "definitionData": {
// CHECK-NEXT: "canConstDefaultInit": true,
// CHECK-NEXT: "copyAssign": {
// CHECK: "copyCtor": {
// CHECK-NEXT: "hasConstParam": true,
// CHECK-NEXT: "implicitHasConstParam": true,
// CHECK-NEXT: "nonTrivial": true,
// CHECK-NEXT: "userDeclared": true
// CHECK-NEXT: },
// CHECK: "hasUserDeclaredConstructor": true,
// CHECK-NEXT: "isEmpty": true,
// CHECK-NEXT: "isStandardLayout": true,
// CHECK-NEXT: "moveAssign": {},
template <int N>
struct MoveConstructorCheck {
MoveConstructorCheck(MoveConstructorCheck&&) requires(N == 1) = default;
MoveConstructorCheck(MoveConstructorCheck&&) requires(N == 2) = delete;
MoveConstructorCheck(MoveConstructorCheck&&) requires(N == 3);
MoveConstructorCheck(MoveConstructorCheck&&);
};
template struct MoveConstructorCheck<1>;
// CHECK: "kind": "ClassTemplateSpecializationDecl",
// CHECK: "definitionData": {
// CHECK-NEXT: "canConstDefaultInit": true,
// LIN-NEXT: "canPassInRegisters": true,
// CHECK-NEXT: "copyAssign": {
// CHECK: "hasUserDeclaredConstructor": true,
// CHECK-NEXT: "isEmpty": true,
// CHECK-NEXT: "isStandardLayout": true,
// CHECK-NEXT: "isTriviallyCopyable": true,
// CHECK-NEXT: "moveAssign": {},
// CHECK-NEXT: "moveCtor": {
// CHECK-NEXT: "exists": true,
// CHECK-NEXT: "trivial": true,
// CHECK-NEXT: "userDeclared": true
// CHECK-NEXT: }
template struct MoveConstructorCheck<2>;
// CHECK: "kind": "ClassTemplateSpecializationDecl",
// CHECK: "definitionData": {
// CHECK-NEXT: "canConstDefaultInit": true,
// CHECK-NEXT: "copyAssign": {
// CHECK: "hasUserDeclaredConstructor": true,
// CHECK-NEXT: "isEmpty": true,
// CHECK-NEXT: "isStandardLayout": true,
// CHECK-NEXT: "isTriviallyCopyable": true,
// CHECK-NEXT: "moveAssign": {},
// CHECK-NEXT: "moveCtor": {
// CHECK-NEXT: "exists": true,
// CHECK-NEXT: "trivial": true,
// CHECK-NEXT: "userDeclared": true
// CHECK-NEXT: }
template struct MoveConstructorCheck<3>;
// CHECK: "kind": "ClassTemplateSpecializationDecl",
// CHECK: "definitionData": {
// CHECK-NEXT: "canConstDefaultInit": true,
// CHECK-NEXT: "copyAssign": {
// CHECK: "hasUserDeclaredConstructor": true,
// CHECK-NEXT: "isEmpty": true,
// CHECK-NEXT: "isStandardLayout": true,
// CHECK-NEXT: "moveAssign": {},
// CHECK-NEXT: "moveCtor": {
// CHECK-NEXT: "exists": true,
// CHECK-NEXT: "nonTrivial": true,
// CHECK-NEXT: "userDeclared": true
// CHECK-NEXT: }
template <int N>
struct CopyAssignmentCheck {
CopyAssignmentCheck& operator=(const CopyAssignmentCheck&) requires(N == 1) = default;
CopyAssignmentCheck& operator=(const CopyAssignmentCheck&) requires(N == 2) = delete;
CopyAssignmentCheck& operator=(const CopyAssignmentCheck&) requires(N == 3);
CopyAssignmentCheck& operator=(const CopyAssignmentCheck&);
};
template struct CopyAssignmentCheck<1>;
// CHECK: "kind": "ClassTemplateSpecializationDecl",
// CHECK: "definitionData": {
// CHECK-NEXT: "canConstDefaultInit": true,
// CHECK-NEXT: "canPassInRegisters": true,
// CHECK-NEXT "copyAssign": {
// CHECK-NEXT "hasConstParam": true,
// CHECK-NEXT "implicitHasConstParam": true,
// CHECK-NEXT "trivial": true,
// CHECK-NEXT "userDeclared": true
// CHECK-NEXT },
// CHECK: "hasConstexprNonCopyMoveConstructor": true,
// CHECK-NEXT "isAggregate": true,
// CHECK-NEXT "isEmpty": true,
// CHECK-NEXT "isLiteral": true,
// CHECK-NEXT "isStandardLayout": true,
// CHECK-NEXT "isTrivial": true,
// CHECK-NEXT "isTriviallyCopyable": true,
// CHECK-NEXT "moveAssign": {},
template struct CopyAssignmentCheck<2>;
// CHECK: "kind": "ClassTemplateSpecializationDecl",
// CHECK: "definitionData": {
// CHECK-NEXT: "canConstDefaultInit": true,
// CHECK-NEXT: "canPassInRegisters": true,
// CHECK-NEXT "copyAssign": {
// CHECK-NEXT "hasConstParam": true,
// CHECK-NEXT "implicitHasConstParam": true,
// CHECK-NEXT "trivial": true,
// CHECK-NEXT "userDeclared": true
// CHECK-NEXT },
// CHECK: "hasConstexprNonCopyMoveConstructor": true,
// CHECK-NEXT "isAggregate": true,
// CHECK-NEXT "isEmpty": true,
// CHECK-NEXT "isLiteral": true,
// CHECK-NEXT "isStandardLayout": true,
// CHECK-NEXT "isTrivial": true,
// CHECK-NEXT "isTriviallyCopyable": true,
// CHECK-NEXT "moveAssign": {},
template struct CopyAssignmentCheck<3>;
// CHECK: "kind": "ClassTemplateSpecializationDecl",
// CHECK: "definitionData": {
// CHECK-NEXT: "canConstDefaultInit": true,
// CHECK-NEXT: "canPassInRegisters": true,
// CHECK-NEXT "copyAssign": {
// CHECK-NEXT "hasConstParam": true,
// CHECK-NEXT "implicitHasConstParam": true,
// CHECK-NEXT "trivial": true,
// CHECK-NEXT "userDeclared": true
// CHECK-NEXT },
// CHECK: "hasConstexprNonCopyMoveConstructor": true,
// CHECK-NEXT "isAggregate": true,
// CHECK-NEXT "isEmpty": true,
// CHECK-NEXT "isLiteral": true,
// CHECK-NEXT "isStandardLayout": true,
// CHECK-NEXT "moveAssign": {},
template <int N>
struct MoveAssignmentCheck {
MoveAssignmentCheck& operator=(MoveAssignmentCheck&&) requires(N == 1) = default;
MoveAssignmentCheck& operator=(MoveAssignmentCheck&&) requires(N == 2) = delete;
MoveAssignmentCheck& operator=(MoveAssignmentCheck&&) requires(N == 3);
MoveAssignmentCheck& operator=(MoveAssignmentCheck&&);
};
template struct MoveAssignmentCheck<1>;
// CHECK: "kind": "ClassTemplateSpecializationDecl",
// CHECK: "definitionData": {
// CHECK-NEXT: "canConstDefaultInit": true,
// CHECK-NEXT: "copyAssign": {
// CHECK: "hasConstexprNonCopyMoveConstructor": true,
// CHECK-NEXT: "isAggregate": true,
// CHECK-NEXT: "isEmpty": true,
// CHECK-NEXT: "isLiteral": true,
// CHECK-NEXT: "isPOD": true,
// CHECK-NEXT: "isStandardLayout": true,
// CHECK-NEXT: "isTrivial": true,
// CHECK-NEXT: "isTriviallyCopyable": true,
// CHECK-NEXT: "moveAssign": {
// CHECK-NEXT: "exists": true,
// CHECK-NEXT: "trivial": true,
// CHECK-NEXT: "userDeclared": true
// CHECK-NEXT: },
template struct MoveAssignmentCheck<2>;
// CHECK: "kind": "ClassTemplateSpecializationDecl",
// CHECK: "definitionData": {
// CHECK-NEXT: "canConstDefaultInit": true,
// CHECK-NEXT: "copyAssign": {
// CHECK: "hasConstexprNonCopyMoveConstructor": true,
// CHECK-NEXT: "isAggregate": true,
// CHECK-NEXT: "isEmpty": true,
// CHECK-NEXT: "isLiteral": true,
// CHECK-NEXT: "isPOD": true,
// CHECK-NEXT: "isStandardLayout": true,
// CHECK-NEXT: "isTrivial": true,
// CHECK-NEXT: "isTriviallyCopyable": true,
// CHECK-NEXT: "moveAssign": {
// CHECK-NEXT: "exists": true,
// CHECK-NEXT: "trivial": true,
// CHECK-NEXT: "userDeclared": true
// CHECK-NEXT: },
template struct MoveAssignmentCheck<3>;
// CHECK: "kind": "ClassTemplateSpecializationDecl",
// CHECK: "definitionData": {
// CHECK-NEXT: "canConstDefaultInit": true,
// CHECK-NEXT: "copyAssign": {
// CHECK: "hasConstexprNonCopyMoveConstructor": true,
// CHECK-NEXT: "isAggregate": true,
// CHECK-NEXT: "isEmpty": true,
// CHECK-NEXT: "isLiteral": true,
// CHECK-NEXT: "isPOD": true,
// CHECK-NEXT: "isStandardLayout": true,
// CHECK-NEXT: "moveAssign": {
// CHECK-NEXT: "exists": true,
// CHECK-NEXT: "nonTrivial": true,
// CHECK-NEXT: "userDeclared": true
// CHECK-NEXT: },
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