71 lines · cpp
1// RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++11 -emit-llvm %s -o - | \2// RUN: FileCheck -check-prefix CHECK-LP64 %s3// RUN: %clang_cc1 -triple i386-apple-darwin -std=c++11 -emit-llvm %s -o - | \4// RUN: FileCheck -check-prefix CHECK-LP32 %s5// 13.3.3.2 Ranking implicit conversion sequences6 7extern "C" int printf(...);8 9struct A {10int Ai;11bool foo(int* arg) const;12}; 13 14bool A::foo(int* arg) const {15 printf("A::foo(%d)\n", *arg);16 return true;17}18 19struct B : public A {20 void bf() { printf("B::bf called\n"); }21}; 22 23struct C : public B { }; 24 25// conversion of B::* to C::* is better than conversion of A::* to C::*26typedef void (A::*pmfa)();27typedef void (B::*pmfb)();28typedef void (C::*pmfc)();29 30struct X {31 operator pmfa();32 operator pmfb() {33 return &B::bf;34 }35};36 37 38void g(pmfc pm) {39 C c;40 (c.*pm)();41}42 43void test2(X x) 44{45 g(x);46}47 48struct B1 {49 bool (A::*pmf)(int*) const;50 51 B1(int i) : pmf(&A::foo), im(i) {52 ((A*)this->*pmf)(&im);53 }54 55 int im;56};57 58int main()59{60 X x;61 test2(x);62 B1 b = B1(1);63 B1 c = B1(2);64}65 66// CHECK-LP64: call { i64, i64 } @_ZN1XcvM1BFvvEEv67// CHECK-LP64: call void @_Z1gM1CFvvE68 69// CHECK-LP32: call i64 @_ZN1XcvM1BFvvEEv70// CHECK-LP32: call void @_Z1gM1CFvvE71