xref: /aosp_15_r20/external/clang/test/SemaCXX/trivial-constructor.cpp (revision 67e74705e28f6214e480b399dd47ea732279e315)
1*67e74705SXin Li // RUN: %clang_cc1 -fsyntax-only -verify %s -std=c++11
2*67e74705SXin Li // expected-no-diagnostics
3*67e74705SXin Li struct T1 {
4*67e74705SXin Li };
5*67e74705SXin Li static_assert(__has_trivial_constructor(T1), "T1 has trivial constructor!");
6*67e74705SXin Li 
7*67e74705SXin Li struct T2 {
8*67e74705SXin Li   T2();
9*67e74705SXin Li };
10*67e74705SXin Li static_assert(!__has_trivial_constructor(T2), "T2 has a user-declared constructor!");
11*67e74705SXin Li 
12*67e74705SXin Li struct T3 {
13*67e74705SXin Li   virtual void f();
14*67e74705SXin Li };
15*67e74705SXin Li static_assert(!__has_trivial_constructor(T3), "T3 has a virtual function!");
16*67e74705SXin Li 
17*67e74705SXin Li struct T4 : virtual T3 {
18*67e74705SXin Li };
19*67e74705SXin Li static_assert(!__has_trivial_constructor(T4), "T4 has a virtual base class!");
20*67e74705SXin Li 
21*67e74705SXin Li struct T5 : T1 {
22*67e74705SXin Li };
23*67e74705SXin Li static_assert(__has_trivial_constructor(T5), "All the direct base classes of T5 have trivial constructors!");
24*67e74705SXin Li 
25*67e74705SXin Li struct T6 {
26*67e74705SXin Li   T5 t5;
27*67e74705SXin Li   T1 t1[2][2];
28*67e74705SXin Li   static T2 t2;
29*67e74705SXin Li };
30*67e74705SXin Li static_assert(__has_trivial_constructor(T6), "All nonstatic data members of T6 have trivial constructors!");
31*67e74705SXin Li 
32*67e74705SXin Li struct T7 {
33*67e74705SXin Li   T4 t4;
34*67e74705SXin Li };
35*67e74705SXin Li static_assert(!__has_trivial_constructor(T7), "t4 does not have a trivial constructor!");
36*67e74705SXin Li 
37*67e74705SXin Li struct T8 : T2 {
38*67e74705SXin Li };
39*67e74705SXin Li static_assert(!__has_trivial_constructor(T8), "The base class T2 does not have a trivial constructor!");
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