| Richard Smith | c3bf52c | 2013-04-20 22:23:05 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -std=c++1y %s -verify |
| 2 | |
| 3 | namespace in_class_init { |
| 4 | union U { char c; double d = 4.0; }; |
| 5 | constexpr U u1 = U(); |
| 6 | constexpr U u2 {}; |
| 7 | constexpr U u3 { 'x' }; |
| 8 | static_assert(u1.d == 4.0, ""); |
| 9 | static_assert(u2.d == 4.0, ""); |
| 10 | static_assert(u3.c == 'x', ""); |
| 11 | |
| 12 | struct A { |
| 13 | int n = 5; |
| 14 | int m = n * 3; |
| 15 | union { |
| 16 | char c; |
| 17 | double d = 4.0; |
| 18 | }; |
| 19 | }; |
| 20 | constexpr A a1 {}; |
| 21 | constexpr A a2 { 8 }; |
| 22 | constexpr A a3 { 1, 2, { 3 } }; |
| 23 | constexpr A a4 { 1, 2, { .d = 3.0 } }; |
| 24 | static_assert(a1.d == 4.0, ""); |
| 25 | static_assert(a2.m == 24, ""); |
| 26 | static_assert(a2.d == 4.0, ""); |
| 27 | static_assert(a3.c == 3, ""); |
| 28 | static_assert(a3.d == 4.0, ""); // expected-error {{constant expression}} expected-note {{active member 'c'}} |
| 29 | static_assert(a4.d == 3.0, ""); |
| 30 | |
| 31 | struct B { |
| 32 | int n; |
| 33 | constexpr int f() { return n * 5; } |
| 34 | int m = f(); |
| 35 | }; |
| 36 | B b1 {}; |
| 37 | constexpr B b2 { 2 }; |
| 38 | B b3 { 1, 2 }; |
| 39 | static_assert(b2.m == 10, ""); |
| 40 | |
| 41 | struct C { |
| 42 | int k; |
| 43 | union { |
| 44 | int l = k; // expected-error {{invalid use of non-static}} |
| 45 | }; |
| 46 | }; |
| 47 | } |
| 48 | |
| 49 | namespace nested_aggregate_init { |
| 50 | struct A { |
| 51 | int n = 5; |
| 52 | int b = n * 3; |
| 53 | }; |
| 54 | struct B { |
| 55 | constexpr B(int k) : d(1.23), k(k) {} |
| 56 | // Within this aggregate, both this object's 'this' and the temporary's |
| 57 | // 'this' are used. |
| 58 | constexpr int f() const { return A{k}.b; } |
| 59 | double d; |
| 60 | int k; |
| 61 | }; |
| 62 | static_assert(B(6).f() == 18, ""); |
| 63 | } |