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