1 // RUN: %clang_cc1 -verify -pedantic %s -std=c++98
2 // RUN: %clang_cc1 -verify -pedantic %s -std=c++11
3
4 template<typename T> struct atomic {
5 _Atomic(T) value;
6
7 void f() _Atomic; // expected-error {{expected ';' at end of declaration list}}
8 };
9
10 template<typename T> struct user {
11 struct inner { char n[sizeof(T)]; };
12 atomic<inner> i;
13 };
14
15 user<int> u;
16
17 // Test overloading behavior of atomics.
18 struct A { };
19
20 int &ovl1(_Atomic(int));
21 int &ovl1(_Atomic int); // ok, redeclaration
22 long &ovl1(_Atomic(long));
23 float &ovl1(_Atomic(float));
24 double &ovl1(_Atomic(A const *const *));
25 double &ovl1(A const *const *_Atomic);
26 short &ovl1(_Atomic(A **));
27
test_overloading(int i,float f,_Atomic (int)ai,_Atomic (float)af,long l,_Atomic (long)al,A const * const * acc,A const ** ac,A ** a)28 void test_overloading(int i, float f, _Atomic(int) ai, _Atomic(float) af,
29 long l, _Atomic(long) al, A const *const *acc,
30 A const ** ac, A **a) {
31 int& ir1 = ovl1(i);
32 int& ir2 = ovl1(ai);
33 long& lr1 = ovl1(l);
34 long& lr2 = ovl1(al);
35 float &fr1 = ovl1(f);
36 float &fr2 = ovl1(af);
37 double &dr1 = ovl1(acc);
38 double &dr2 = ovl1(ac);
39 short &sr1 = ovl1(a);
40 }
41
42 typedef int (A::*fp)() _Atomic; // expected-error {{expected ';' after top level declarator}} expected-warning {{does not declare anything}}
43
44 typedef _Atomic(int(A::*)) atomic_mem_ptr_to_int;
45 typedef int(A::*_Atomic atomic_mem_ptr_to_int);
46
47 typedef _Atomic(int)(A::*mem_ptr_to_atomic_int);
48 typedef _Atomic int(A::*mem_ptr_to_atomic_int);
49
50 typedef _Atomic(int)&atomic_int_ref;
51 typedef _Atomic int &atomic_int_ref;
52 typedef _Atomic atomic_int_ref atomic_int_ref; // expected-warning {{'_Atomic' qualifier on reference type 'atomic_int_ref' (aka '_Atomic(int) &') has no effect}}
53
54 typedef int &_Atomic atomic_reference_to_int; // expected-error {{'_Atomic' qualifier may not be applied to a reference}}
55 typedef _Atomic(int &) atomic_reference_to_int; // expected-error {{_Atomic cannot be applied to reference type 'int &'}}
56
57 struct S {
58 _Atomic union { int n; }; // expected-warning {{anonymous union cannot be '_Atomic'}}
59 };
60
61 namespace copy_init {
62 struct X {
63 X(int);
64 int n;
65 };
66 _Atomic(X) y = X(0);
67 _Atomic(X) z(X(0));
f()68 void f() { y = X(0); }
69
70 _Atomic(X) e1(0); // expected-error {{cannot initialize}}
71 #if __cplusplus >= 201103L
_Atomic(X)72 _Atomic(X) e2{0}; // expected-error {{illegal initializer}}
_Atomic(X)73 _Atomic(X) a{X(0)};
74 #endif
75
76 struct Y {
77 _Atomic(X) a;
78 _Atomic(int) b;
79 };
80 Y y1 = { X(0), 4 };
81 Y y2 = { 0, 4 }; // expected-error {{cannot initialize}}
82 // FIXME: It's not really clear if we should allow these. Generally, C++11
83 // allows extraneous braces around initializers.
84 Y y3 = { { X(0) }, { 4 } }; // expected-error 2{{illegal initializer type}}
85 }
86
PR21836(_Atomic (int)* x)87 bool PR21836(_Atomic(int) *x) {
88 return *x;
89 }
90