instantiate-expr-1.cpp revision dc81c880cad01f01888632d28345077336ca06a4 
1// RUN: %clang_cc1 -fsyntax-only -verify %s
2template<int I, int J>
3struct Bitfields {
4  int simple : I; // expected-error{{bit-field 'simple' has zero width}}
5  int parens : (J);
6};
7
8void test_Bitfields(Bitfields<0, 5> *b) {
9  (void)sizeof(Bitfields<10, 5>);
10  (void)sizeof(Bitfields<0, 1>); // expected-note{{in instantiation of template class 'struct Bitfields<0, 1>' requested here}}
11}
12
13template<int I, int J>
14struct BitfieldPlus {
15  int bitfield : I + J; // expected-error{{bit-field 'bitfield' has zero width}}
16};
17
18void test_BitfieldPlus() {
19  (void)sizeof(BitfieldPlus<0, 1>);
20  (void)sizeof(BitfieldPlus<-5, 5>); // expected-note{{in instantiation of template class 'struct BitfieldPlus<-5, 5>' requested here}}
21}
22
23template<int I, int J>
24struct BitfieldMinus {
25  int bitfield : I - J; // expected-error{{bit-field 'bitfield' has negative width (-1)}} \
26  // expected-error{{bit-field 'bitfield' has zero width}}
27};
28
29void test_BitfieldMinus() {
30  (void)sizeof(BitfieldMinus<5, 1>);
31  (void)sizeof(BitfieldMinus<0, 1>); // expected-note{{in instantiation of template class 'struct BitfieldMinus<0, 1>' requested here}}
32  (void)sizeof(BitfieldMinus<5, 5>); // expected-note{{in instantiation of template class 'struct BitfieldMinus<5, 5>' requested here}}
33}
34
35template<int I, int J>
36struct BitfieldDivide {
37  int bitfield : I / J; // expected-error{{expression is not an integer constant expression}} \
38                        // expected-note{{division by zero}}
39};
40
41void test_BitfieldDivide() {
42  (void)sizeof(BitfieldDivide<5, 1>);
43  (void)sizeof(BitfieldDivide<5, 0>); // expected-note{{in instantiation of template class 'struct BitfieldDivide<5, 0>' requested here}}
44}
45
46template<typename T, T I, int J>
47struct BitfieldDep {
48  int bitfield : I + J;
49};
50
51void test_BitfieldDep() {
52  (void)sizeof(BitfieldDep<int, 1, 5>);
53}
54
55template<int I>
56struct BitfieldNeg {
57  int bitfield : (-I); // expected-error{{bit-field 'bitfield' has negative width (-5)}}
58};
59
60template<typename T, T I>
61struct BitfieldNeg2 {
62  int bitfield : (-I); // expected-error{{bit-field 'bitfield' has negative width (-5)}}
63};
64
65void test_BitfieldNeg() {
66  (void)sizeof(BitfieldNeg<-5>); // okay
67  (void)sizeof(BitfieldNeg<5>); // expected-note{{in instantiation of template class 'struct BitfieldNeg<5>' requested here}}
68  (void)sizeof(BitfieldNeg2<int, -5>); // okay
69  (void)sizeof(BitfieldNeg2<int, 5>); // expected-note{{in instantiation of template class 'struct BitfieldNeg2<int, 5>' requested here}}
70}
71
72template<typename T>
73void increment(T &x) {
74  (void)++x;
75}
76
77struct Incrementable {
78  Incrementable &operator++();
79};
80
81void test_increment(Incrementable inc) {
82  increment(inc);
83}
84
85template<typename T>
86void add(const T &x) {
87  (void)(x + x);
88}
89
90namespace PR6237 {
91  template <typename T>
92  void f(T t) {
93    t++;
94  }
95
96  struct B { };
97  B operator++(B &, int);
98
99  template void f(B);
100}
101
102struct Addable {
103  Addable operator+(const Addable&) const;
104};
105
106void test_add(Addable &a) {
107  add(a);
108}
109
110struct CallOperator {
111  int &operator()(int);
112  double &operator()(double);
113};
114
115template<typename Result, typename F, typename Arg1>
116Result test_call_operator(F f, Arg1 arg1) {
117  // PR5266: non-dependent invocations of a function call operator.
118  CallOperator call_op;
119  int &ir = call_op(17);
120  return f(arg1);
121}
122
123void test_call_operator(CallOperator call_op, int i, double d) {
124  int &ir = test_call_operator<int&>(call_op, i);
125  double &dr = test_call_operator<double&>(call_op, d);
126}
127
128template<typename T>
129void test_asm(T t) {
130  asm ("nop" : "=a"(*t) : "r"(*t)); // expected-error {{indirection requires pointer operand ('int' invalid)}}
131}
132
133void test_asm() {
134  int* a;
135  test_asm(a);
136
137  int b;
138  test_asm(b); // expected-note {{in instantiation of function template specialization 'test_asm<int>' requested here}}
139}
140