convert-to-fptr.cpp revision d8307b1033ef52a1ae640691bc45052fddb07a69 
1// RUN: clang-cc -triple x86_64-apple-darwin -std=c++0x -S %s -o %t-64.s &&
2// RUN: FileCheck -check-prefix LP64 --input-file=%t-64.s %s &&
3// RUN: clang-cc -triple i386-apple-darwin -std=c++0x -S %s -o %t-32.s &&
4// RUN: FileCheck -check-prefix LP32 --input-file=%t-32.s %s &&
5// RUN: true
6
7extern "C" int printf(...);
8
9int f1(int arg)  { return arg; };
10
11int f2(float arg) { return int(arg); };
12
13typedef int (*fp1)(int);
14
15typedef int (*fp2)(float);
16
17struct A {
18  operator fp1() { return f1; }
19  operator fp2() { return f2; }
20} a;
21
22
23// Test for function reference.
24typedef int (&fr1)(int);
25typedef int (&fr2)(float);
26
27struct B {
28  operator fr1() { return f1; }
29  operator fr2() { return f2; }
30} b;
31
32int main()
33{
34 int i = a(10); // Calls f1 via pointer returned from conversion function
35 printf("i = %d\n", i);
36
37 int j = b(20); // Calls f1 via pointer returned from conversion function
38 printf("j = %d\n", j);
39 return 0;
40}
41
42// CHECK-LP64: call __ZN1AcvPFiiEEv
43// CHECK-LP64: call __ZN1BcvRFiiEEv
44
45// CHECK-LP32: call L__ZN1AcvPFiiEEv
46// CHECK-LP32: call L__ZN1BcvRFiiEEv
47
48