1 // RUN: %clang_cc1 -fsyntax-only -verify %s
2 char *foo(float);
3 
4 void test_foo_1(float fv, double dv, float _Complex fc, double _Complex dc) {
5   char *cp1 = foo(fv);
6   char *cp2 = foo(dv);
7   // Note: GCC and EDG reject these two, they are valid C99 conversions but
8   // shouldn't be accepted in C++ because the result is surprising.
9   char *cp3 = foo(fc); // expected-error {{implicit conversion from '_Complex float' to 'float' is not permitted in C++}}
10   char *cp4 = foo(dc); // expected-error {{implicit conversion from '_Complex double' to 'float' is not permitted in C++}}
11 }
12 
13 int *foo(float _Complex);
14 
15 void test_foo_2(float fv, double dv, float _Complex fc, double _Complex dc) {
16   char *cp1 = foo(fv);
17   char *cp2 = foo(dv);
18   int *ip = foo(fc);
19   int *lp = foo(dc);
20 }
21 
22 long *foo(double _Complex);
23 
24 void test_foo_3(float fv, double dv, float _Complex fc, double _Complex dc) {
25   char *cp1 = foo(fv);
26   char *cp2 = foo(dv);
27   int *ip = foo(fc);
28   long *lp = foo(dc);
29 }
30 
31 char *promote_or_convert(double _Complex);  // expected-note{{candidate function}}
32 int *promote_or_convert(long double _Complex); // expected-note{{candidate function}}
33 
34 void test_promote_or_convert(float f, float _Complex fc) {
35   char *cp = promote_or_convert(fc);
36   int *ip2 = promote_or_convert(f); // expected-error{{call to 'promote_or_convert' is ambiguous}}
37 }
38 
39 char *promote_or_convert2(float);
40 int *promote_or_convert2(double _Complex);
41 
42 void test_promote_or_convert2(float _Complex fc) {
43   int *cp = promote_or_convert2(fc);
44 }
45 
46 char *promote_or_convert3(int _Complex); // expected-note {{candidate}}
47 int *promote_or_convert3(long _Complex); // expected-note {{candidate}}
48 
49 void test_promote_or_convert3(short _Complex sc) {
50   char *cp1 = promote_or_convert3(sc);
51   char *cp2 = promote_or_convert3(1i);
52   int *cp3 = promote_or_convert3(1il);
53   int *cp4 = promote_or_convert3(1ill); // expected-error {{ambiguous}}
54 }
55 
56 char &convert4(short _Complex);
57 char &test_convert4 = convert4(1i);
58