| 1 | // RUN: %clang_cc1 %s -triple x86_64-apple-darwin10 -emit-llvm -o - | FileCheck %s |
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| 2 | |
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| 3 | // An extra byte should be allocated for an empty class. |
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| 4 | namespace Test1 { |
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| 5 | // CHECK: %"struct.Test1::A" = type { i8 } |
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| 6 | struct A { } *a; |
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| 7 | } |
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| 8 | |
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| 9 | namespace Test2 { |
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| 10 | // No need to add tail padding here. |
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| 11 | // CHECK: %"struct.Test2::A" = type { i8*, i32 } |
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| 12 | struct A { void *a; int b; } *a; |
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| 13 | } |
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| 14 | |
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| 15 | namespace Test3 { |
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| 16 | // C should have a vtable pointer. |
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| 17 | // CHECK: %"struct.Test3::A" = type <{ i32 (...)**, i32, [4 x i8] }> |
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| 18 | struct A { virtual void f(); int a; } *a; |
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| 19 | } |
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| 20 | |
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| 21 | namespace Test4 { |
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| 22 | // Test from PR5589. |
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| 23 | // CHECK: %"struct.Test4::B" = type { %"struct.Test4::A", i16, double } |
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| 24 | // CHECK: %"struct.Test4::A" = type { i32, i8, float } |
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| 25 | struct A { |
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| 26 | int a; |
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| 27 | char c; |
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| 28 | float b; |
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| 29 | }; |
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| 30 | struct B : public A { |
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| 31 | short d; |
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| 32 | double e; |
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| 33 | } *b; |
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| 34 | } |
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| 35 | |
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| 36 | namespace Test5 { |
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| 37 | struct A { |
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| 38 | virtual void f(); |
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| 39 | char a; |
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| 40 | }; |
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| 41 | |
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| 42 | // CHECK: %"struct.Test5::B" = type { %"struct.Test5::A.base", i8, i8, [5 x i8] } |
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| 43 | struct B : A { |
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| 44 | char b : 1; |
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| 45 | char c; |
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| 46 | } *b; |
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| 47 | } |
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| 48 | |
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| 49 | // PR10912: don't crash |
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| 50 | namespace Test6 { |
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| 51 | template <typename T> class A { |
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| 52 | // If T is complete, IR-gen will want to translate it recursively |
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| 53 | // when translating T*. |
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| 54 | T *foo; |
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| 55 | }; |
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| 56 | |
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| 57 | class B; |
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| 58 | |
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| 59 | // This causes IR-gen to have an incomplete translation of A<B> |
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| 60 | // sitting around. |
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| 61 | A<B> *a; |
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| 62 | |
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| 63 | class C {}; |
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| 64 | class B : public C { |
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| 65 | // This forces Sema to instantiate A<B>, which triggers a callback |
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| 66 | // to IR-gen. Because of the previous, incomplete translation, |
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| 67 | // IR-gen actually cares, and it immediately tries to complete |
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| 68 | // A<B>'s IR type. That, in turn, causes the translation of B*. |
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| 69 | // B isn't complete yet, but it has a definition, and if we try to |
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| 70 | // compute a record layout for that definition then we'll really |
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| 71 | // regret it later. |
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| 72 | A<B> a; |
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| 73 | }; |
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| 74 | |
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| 75 | // The derived class E and empty base class C are required to |
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| 76 | // provoke the original assertion. |
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| 77 | class E : public B {}; |
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| 78 | E *e; |
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| 79 | } |
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| 80 | |
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| 81 | // <rdar://problem/11324125>: Make sure this doesn't crash. (It's okay |
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| 82 | // if we start rejecting it at some point.) |
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| 83 | namespace Test7 { |
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| 84 | #pragma pack (1) |
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| 85 | class A {}; |
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| 86 | // CHECK: %"class.Test7::B" = type <{ i32 (...)**, %"class.Test7::A" }> |
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| 87 | class B { |
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| 88 | virtual ~B(); |
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| 89 | A a; |
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| 90 | }; |
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| 91 | B* b; |
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| 92 | #pragma pack () |
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| 93 | } |
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| 94 | |
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| 95 | // Shouldn't crash. |
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| 96 | namespace Test8 { |
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| 97 | struct A {}; |
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| 98 | struct D { int a; }; |
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| 99 | struct B : virtual D, A { }; |
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| 100 | struct C : B, A { void f() {} }; |
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| 101 | C c; |
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| 102 | } |
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| 103 | |
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