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comparison clang/test/PCH/cxx1y-default-initializer.cpp @ 150:1d019706d866

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LLVM10
author anatofuz
date Thu, 13 Feb 2020 15:10:13 +0900
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children 2e18cbf3894f
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147:c2174574ed3a 150:1d019706d866
1 // RUN: %clang_cc1 -pedantic -std=c++1y -include %s -include %s -verify %s
2 // RUN: %clang_cc1 -pedantic -std=c++1y -emit-pch -o %t.1 %s
3 // RUN: %clang_cc1 -pedantic -std=c++1y -include-pch %t.1 -emit-pch -o %t.2 %s
4 // RUN: %clang_cc1 -pedantic -std=c++1y -include-pch %t.2 -verify %s
5
6 #ifndef HEADER_1
7 #define HEADER_1
8
9 struct A {
10 int x;
11 int y = 3;
12 int z = x + y;
13 };
14 template<typename T> constexpr A make() { return A {}; }
15 template<typename T> constexpr A make(T t) { return A { t }; }
16
17 struct B {
18 int z1, z2 = z1;
19 constexpr B(int k) : z1(k) {}
20 };
21
22 template<typename T> struct C {
23 constexpr C() {}
24 T c = T();
25 struct U {};
26 };
27 // Instantiate C<int> but not the default initializer.
28 C<int>::U ciu;
29
30 #elif !defined(HEADER_2)
31 #define HEADER_2
32
33 // Instantiate the default initializer now, should create an update record.
34 C<int> ci;
35
36 #else
37
38 static_assert(A{}.z == 3, "");
39 static_assert(A{1}.z == 4, "");
40 static_assert(A{.y = 5}.z == 5, ""); // expected-warning {{C++20}}
41 static_assert(A{3, .y = 1}.z == 4, ""); // expected-warning {{C99}} expected-note {{here}}
42 static_assert(make<int>().z == 3, "");
43 static_assert(make<int>(12).z == 15, "");
44 static_assert(C<int>().c == 0, "");
45
46 #endif