Daniel Dunbar | a572887 | 2009-12-15 20:14:24 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -triple x86_64-unknown-unknown %s -fsyntax-only -verify |
Anders Carlsson | 1345bd2 | 2009-09-24 03:22:10 +0000 | [diff] [blame] | 2 | |
| 3 | #define SA(n, p) int a##n[(p) ? 1 : -1] |
| 4 | |
Anders Carlsson | bfcdc40 | 2010-05-23 18:14:24 +0000 | [diff] [blame] | 5 | namespace Test0 { |
| 6 | |
Anders Carlsson | 1345bd2 | 2009-09-24 03:22:10 +0000 | [diff] [blame] | 7 | struct A { int a; }; |
| 8 | SA(0, sizeof(A) == 4); |
| 9 | |
| 10 | struct B { }; |
| 11 | SA(1, sizeof(B) == 1); |
| 12 | |
| 13 | struct C : A, B { }; |
| 14 | SA(2, sizeof(C) == 4); |
Anders Carlsson | ffbdefc | 2009-09-24 05:21:31 +0000 | [diff] [blame] | 15 | |
| 16 | struct D { }; |
| 17 | struct E : D { }; |
| 18 | struct F : E { }; |
| 19 | |
| 20 | struct G : E, F { }; |
| 21 | SA(3, sizeof(G) == 2); |
Anders Carlsson | 6026504 | 2009-09-25 00:02:51 +0000 | [diff] [blame] | 22 | |
Anders Carlsson | fbbce49 | 2009-09-25 01:23:32 +0000 | [diff] [blame] | 23 | struct Empty { Empty(); }; |
Anders Carlsson | 6026504 | 2009-09-25 00:02:51 +0000 | [diff] [blame] | 24 | |
Anders Carlsson | fbbce49 | 2009-09-25 01:23:32 +0000 | [diff] [blame] | 25 | struct I : Empty { |
| 26 | Empty e; |
Anders Carlsson | 6026504 | 2009-09-25 00:02:51 +0000 | [diff] [blame] | 27 | }; |
| 28 | SA(4, sizeof(I) == 2); |
Anders Carlsson | fbbce49 | 2009-09-25 01:23:32 +0000 | [diff] [blame] | 29 | |
| 30 | struct J : Empty { |
| 31 | Empty e[2]; |
| 32 | }; |
Anders Carlsson | a4c6081 | 2009-09-25 01:54:38 +0000 | [diff] [blame] | 33 | SA(5, sizeof(J) == 3); |
| 34 | |
| 35 | template<int N> struct Derived : Empty, Derived<N - 1> { |
| 36 | }; |
| 37 | template<> struct Derived<0> : Empty { }; |
| 38 | |
| 39 | struct S1 : virtual Derived<10> { |
| 40 | Empty e; |
| 41 | }; |
| 42 | SA(6, sizeof(S1) == 24); |
| 43 | |
| 44 | struct S2 : virtual Derived<10> { |
| 45 | Empty e[2]; |
| 46 | }; |
| 47 | SA(7, sizeof(S2) == 24); |
Anders Carlsson | 1eca99b | 2009-09-25 15:39:00 +0000 | [diff] [blame] | 48 | |
| 49 | struct S3 { |
| 50 | Empty e; |
| 51 | }; |
| 52 | |
| 53 | struct S4 : Empty, S3 { |
| 54 | }; |
| 55 | SA(8, sizeof(S4) == 2); |
| 56 | |
| 57 | struct S5 : S3, Empty {}; |
| 58 | SA(9, sizeof(S5) == 2); |
| 59 | |
| 60 | struct S6 : S5 { }; |
| 61 | SA(10, sizeof(S6) == 2); |
Anders Carlsson | 7e41038 | 2009-09-26 01:09:35 +0000 | [diff] [blame] | 62 | |
| 63 | struct S7 : Empty { |
| 64 | void *v; |
| 65 | }; |
| 66 | SA(11, sizeof(S7) == 8); |
Anders Carlsson | dfde681 | 2009-09-26 01:29:10 +0000 | [diff] [blame] | 67 | |
| 68 | struct S8 : Empty, A { |
| 69 | }; |
| 70 | SA(12, sizeof(S8) == 4); |
Anders Carlsson | bfcdc40 | 2010-05-23 18:14:24 +0000 | [diff] [blame] | 71 | |
| 72 | } |
| 73 | |
| 74 | namespace Test1 { |
| 75 | |
| 76 | // Test that we don't try to place both A subobjects at offset 0. |
| 77 | struct A { }; |
| 78 | class B { virtual void f(); }; |
| 79 | class C : A, virtual B { }; |
| 80 | struct D : virtual C { }; |
| 81 | struct E : virtual A { }; |
| 82 | class F : D, E { }; |
| 83 | |
| 84 | SA(0, sizeof(F) == 24); |
| 85 | |
| 86 | } |
Anders Carlsson | 1a8d151 | 2010-05-27 16:07:49 +0000 | [diff] [blame^] | 87 | |
| 88 | namespace Test2 { |
| 89 | |
| 90 | // Test that B::a isn't laid out at offset 0. |
| 91 | struct Empty { }; |
| 92 | struct A : Empty { }; |
| 93 | struct B : Empty { |
| 94 | A a; |
| 95 | }; |
| 96 | |
| 97 | SA(0, sizeof(B) == 2); |
| 98 | |
| 99 | } |
| 100 | |
| 101 | namespace Test3 { |
| 102 | |
| 103 | // Test that B::a isn't laid out at offset 0. |
| 104 | struct Empty { }; |
| 105 | struct A { Empty e; }; |
| 106 | struct B : Empty { |
| 107 | A a; |
| 108 | }; |
| 109 | |
| 110 | SA(0, sizeof(B) == 2); |
| 111 | |
| 112 | } |