// RUN: %clang_cc1 -Wno-microsoft -fno-rtti -std=c++11 -emit-llvm %s -o - -triple=i386-pc-win32 | FileCheck %s struct U; static_assert(sizeof(void (U::*)()) == 2 * sizeof(void*) + 2 * sizeof(int), ""); struct A { int a; }; struct B { int b; }; struct I { union { struct { int a, b; }; }; }; struct S { int a, b; void f(); virtual void g(); }; struct M : A, B { int a, b; void f(); virtual void g(); }; struct V : virtual A { int a, b; void f(); virtual void g(); }; struct U { int a, b; void f(); virtual void g(); }; struct C { virtual void f(); }; struct D { virtual void g(); }; struct O : C, D { virtual void g(); }; // override of non-primary // Test data member pointers. template <typename T, int T::*F> int ReadField(T &o) { return F ? o.*F : 0; } // Redeclare some of the classes so that the implicit attribute goes on the most // recent redeclaration rather than the definition. struct V; void ReadFields() { A a; I i; S s; M m; V v; U u; ReadField<S, &S::a>(s); ReadField<M, &M::a>(m); ReadField<V, &V::a>(v); ReadField<U, &U::a>(u); ReadField<S, &S::b>(s); ReadField<M, &M::b>(m); ReadField<V, &V::b>(v); ReadField<U, &U::b>(u); ReadField<S, nullptr>(s); ReadField<M, nullptr>(m); ReadField<V, nullptr>(v); ReadField<U, nullptr>(u); // Non-polymorphic null data memptr vs first field memptr. ReadField<A, &A::a>(a); ReadField<A, nullptr>(a); // Indirect fields injected from anonymous unions and structs ReadField<I, &I::a>(i); ReadField<I, &I::b>(i); } // CHECK-LABEL: define {{.*}}ReadFields // CHECK: call {{.*}} @"\01??$ReadField@US@@$03@@YAHAAUS@@@Z" // CHECK: call {{.*}} @"\01??$ReadField@UM@@$0M@@@YAHAAUM@@@Z" // CHECK: call {{.*}} @"\01??$ReadField@UV@@$F7A@@@YAHAAUV@@@Z" // CHECK: call {{.*}} @"\01??$ReadField@UU@@$G3A@A@@@YAHAAUU@@@Z" // CHECK: call {{.*}} @"\01??$ReadField@US@@$07@@YAHAAUS@@@Z" // CHECK: call {{.*}} @"\01??$ReadField@UM@@$0BA@@@YAHAAUM@@@Z" // CHECK: call {{.*}} @"\01??$ReadField@UV@@$FM@A@@@YAHAAUV@@@Z" // CHECK: call {{.*}} @"\01??$ReadField@UU@@$G7A@A@@@YAHAAUU@@@Z" // MSVC mangles null member pointers in function templates wrong, but it gets // them right in class templates. // CHECK: call {{.*}} @"\01??$ReadField@US@@$0A@@@YAHAAUS@@@Z" // CHECK: call {{.*}} @"\01??$ReadField@UM@@$0A@@@YAHAAUM@@@Z" // CHECK: call {{.*}} @"\01??$ReadField@UV@@$FA@?0@@YAHAAUV@@@Z" // CHECK: call {{.*}} @"\01??$ReadField@UU@@$GA@A@?0@@YAHAAUU@@@Z" // Non-polymorphic null data memptr vs first field memptr. MSVC mangles these // the same. // CHECK: call {{.*}} @"\01??$ReadField@UA@@$0A@@@YAHAAUA@@@Z" // CHECK: call {{.*}} @"\01??$ReadField@UA@@$0?0@@YAHAAUA@@@Z" // Indirect fields are handled as-if they were simply members of their enclosing // record. // CHECK: call {{.*}} @"\01??$ReadField@UI@@$0A@@@YAHAAUI@@@Z" // CHECK: call {{.*}} @"\01??$ReadField@UI@@$03@@YAHAAUI@@@Z" // Test member function pointers. template <typename T, void (T::*MFP)()> void CallMethod(T &o) { (o.*MFP)(); } void CallMethods() { S s; M m; V v; U u; O o; // Non-virtual methods. CallMethod<S, &S::f>(s); CallMethod<M, &M::f>(m); CallMethod<V, &V::f>(v); CallMethod<U, &U::f>(u); // Virtual methods requiring thunk mangling. CallMethod<S, &S::g>(s); CallMethod<M, &M::g>(m); CallMethod<V, &V::g>(v); CallMethod<U, &U::g>(u); // A member pointer for a non-primary vbase will have a non-zero this // adjustment. CallMethod<O, &O::g>(o); // Null member pointers. CallMethod<S, nullptr>(s); CallMethod<M, nullptr>(m); CallMethod<V, nullptr>(v); CallMethod<U, nullptr>(u); } // CHECK-LABEL: define {{.*}}CallMethods // CHECK: call {{.*}} @"\01??$CallMethod@US@@$1?f@1@QAEXXZ@@YAXAAUS@@@Z" // CHECK: call {{.*}} @"\01??$CallMethod@UM@@$H?f@1@QAEXXZA@@@YAXAAUM@@@Z" // CHECK: call {{.*}} @"\01??$CallMethod@UV@@$I?f@1@QAEXXZA@A@@@YAXAAUV@@@Z" // CHECK: call {{.*}} @"\01??$CallMethod@UU@@$J?f@1@QAEXXZA@A@A@@@YAXAAUU@@@Z" // PR17034: MSVC reuses the same thunk for every virtual g method because they // are all at vftable offset zero. They then mangle the name of the first thunk // created into the name of the template instantiation, which is definitely a // bug. We don't follow them here. Instead of ?_91@ backref below, they would // get ?_9S@@ in every instantiation after the first. // CHECK: call {{.*}} @"\01??$CallMethod@US@@$1??_91@$BA@AE@@YAXAAUS@@@Z" // CHECK: call {{.*}} @"\01??$CallMethod@UM@@$H??_91@$BA@AEA@@@YAXAAUM@@@Z" // CHECK: call {{.*}} @"\01??$CallMethod@UV@@$I??_91@$BA@AEA@A@@@YAXAAUV@@@Z" // CHECK: call {{.*}} @"\01??$CallMethod@UU@@$J??_91@$BA@AEA@A@A@@@YAXAAUU@@@Z" // CHECK: call {{.*}} @"\01??$CallMethod@UO@@$H??_91@$BA@AE3@@YAXAAUO@@@Z" // CHECK: call {{.*}} @"\01??$CallMethod@US@@$0A@@@YAXAAUS@@@Z" // CHECK: call {{.*}} @"\01??$CallMethod@UM@@$0A@@@YAXAAUM@@@Z" // CHECK: call {{.*}} @"\01??$CallMethod@UV@@$0A@@@YAXAAUV@@@Z" // CHECK: call {{.*}} @"\01??$CallMethod@UU@@$0A@@@YAXAAUU@@@Z"