| 1 | // no PCH |
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| 2 | // RUN: %clang_cc1 -emit-llvm-only -include %s -include %s %s |
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| 3 | // with PCH |
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| 4 | // RUN: %clang_cc1 -emit-llvm-only -chain-include %s -chain-include %s %s |
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| 5 | #if !defined(PASS1) |
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| 6 | #define PASS1 |
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| 7 | |
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| 8 | // A base with a virtual dtor. |
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| 9 | struct A { |
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| 10 | virtual ~A(); |
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| 11 | }; |
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| 12 | |
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| 13 | // A derived class with an implicit virtual dtor. |
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| 14 | struct B : A { |
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| 15 | // Key function to suppress vtable definition. |
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| 16 | virtual void virt(); |
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| 17 | }; |
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| 18 | |
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| 19 | #elif !defined(PASS2) |
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| 20 | #define PASS2 |
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| 21 | |
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| 22 | // Further derived class that requires ~B(). |
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| 23 | // Causes definition of ~B(), but it was lost when saving PCH. |
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| 24 | struct C : B { |
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| 25 | C(); |
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| 26 | ~C() {} |
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| 27 | }; |
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| 28 | |
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| 29 | #else |
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| 30 | |
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| 31 | void foo() { |
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| 32 | // Variable that requires ~C(). |
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| 33 | C c; |
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| 34 | } |
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| 35 | |
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| 36 | // VTable placement would again cause definition of ~B(), hiding the bug, |
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| 37 | // if not for B::virt(), which suppresses the placement. |
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| 38 | |
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| 39 | #endif |
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| 40 | |
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