| 1 | // RUN: %clang_cc1 -std=c++1y %s -verify |
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| 2 | |
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| 3 | namespace in_class_init { |
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| 4 | union U { char c; double d = 4.0; }; |
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| 5 | constexpr U u1 = U(); |
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| 6 | constexpr U u2 {}; |
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| 7 | constexpr U u3 { 'x' }; |
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| 8 | static_assert(u1.d == 4.0, ""); |
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| 9 | static_assert(u2.d == 4.0, ""); |
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| 10 | static_assert(u3.c == 'x', ""); |
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| 11 | |
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| 12 | struct A { |
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| 13 | int n = 5; |
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| 14 | int m = n * 3; |
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| 15 | union { |
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| 16 | char c; |
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| 17 | double d = 4.0; |
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| 18 | }; |
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| 19 | }; |
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| 20 | constexpr A a1 {}; |
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| 21 | constexpr A a2 { 8 }; |
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| 22 | constexpr A a3 { 1, 2, { 3 } }; |
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| 23 | constexpr A a4 { 1, 2, { .d = 3.0 } }; |
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| 24 | static_assert(a1.d == 4.0, ""); |
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| 25 | static_assert(a2.m == 24, ""); |
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| 26 | static_assert(a2.d == 4.0, ""); |
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| 27 | static_assert(a3.c == 3, ""); |
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| 28 | static_assert(a3.d == 4.0, ""); // expected-error {{constant expression}} expected-note {{active member 'c'}} |
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| 29 | static_assert(a4.d == 3.0, ""); |
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| 30 | |
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| 31 | struct B { |
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| 32 | int n; |
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| 33 | constexpr int f() { return n * 5; } |
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| 34 | int m = f(); |
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| 35 | }; |
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| 36 | B b1 {}; |
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| 37 | constexpr B b2 { 2 }; |
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| 38 | B b3 { 1, 2 }; |
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| 39 | static_assert(b2.m == 10, ""); |
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| 40 | |
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| 41 | struct C { |
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| 42 | int k; |
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| 43 | union { |
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| 44 | int l = k; // expected-error {{invalid use of non-static}} |
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| 45 | }; |
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| 46 | }; |
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| 47 | } |
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| 48 | |
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| 49 | namespace nested_aggregate_init { |
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| 50 | struct A { |
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| 51 | int n = 5; |
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| 52 | int b = n * 3; |
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| 53 | }; |
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| 54 | struct B { |
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| 55 | constexpr B(int k) : d(1.23), k(k) {} |
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| 56 | // Within this aggregate, both this object's 'this' and the temporary's |
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| 57 | // 'this' are used. |
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| 58 | constexpr int f() const { return A{k}.b; } |
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| 59 | double d; |
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| 60 | int k; |
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| 61 | }; |
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| 62 | static_assert(B(6).f() == 18, ""); |
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| 63 | } |
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| 64 | |
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| 65 | namespace use_self { |
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| 66 | struct FibTree { |
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| 67 | int n; |
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| 68 | FibTree *l = // expected-note {{declared here}} |
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| 69 | n > 1 ? new FibTree{n-1} : &fib0; // expected-error {{default member initializer for 'l' needed}} |
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| 70 | FibTree *r = // expected-note {{declared here}} |
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| 71 | n > 2 ? new FibTree{n-2} : &fib0; // expected-error {{default member initializer for 'r' needed}} |
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| 72 | int v = l->v + r->v; |
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| 73 | |
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| 74 | static FibTree fib0; |
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| 75 | }; |
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| 76 | FibTree FibTree::fib0{0, nullptr, nullptr, 1}; |
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| 77 | |
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| 78 | int fib(int n) { return FibTree{n}.v; } |
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| 79 | } |
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| 80 | |
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