1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++98 %s
// C++ [expr.const]p1:
// In several places, C++ requires expressions that evaluate to an integral
// or enumeration constant: as array bounds, as case expressions, as
// bit-field lengths, as enumerator initializers, as static member
// initializers, and as integral or enumeration non-type template arguments.
// An integral constant-expression can involve only literals, enumerators,
// const variables or static data members of integral or enumeration types
// initialized with constant expressions, and sizeof expressions. Floating
// literals can appear only if they are cast to integral or enumeration types.
enum Enum { eval = 1 };
const int cval = 2;
const Enum ceval = eval;
struct Struct {
static const int sval = 3;
static const Enum seval = eval;
};
template <int itval, Enum etval> struct C {
enum E {
v1 = 1,
v2 = eval,
v3 = cval,
v4 = ceval,
v5 = Struct::sval,
v6 = Struct::seval,
v7 = itval,
v8 = etval,
v9 = (int)1.5,
v10 = sizeof(Struct),
v11 = true? 1 + cval * Struct::sval ^ itval / (int)1.5 - sizeof(Struct) : 0
};
unsigned
b1 : 1,
b2 : eval,
b3 : cval,
b4 : ceval,
b5 : Struct::sval,
b6 : Struct::seval,
b7 : itval,
b8 : etval,
b9 : (int)1.5,
b10 : sizeof(Struct),
b11 : true? 1 + cval * Struct::sval ^ itval / (int)1.5 - sizeof(Struct) : 0
;
static const int
i1 = 1,
i2 = eval,
i3 = cval,
i4 = ceval,
i5 = Struct::sval,
i6 = Struct::seval,
i7 = itval,
i8 = etval,
i9 = (int)1.5,
i10 = sizeof(Struct),
i11 = true? 1 + cval * Struct::sval ^ itval / (int)1.5 - sizeof(Struct) : 0
;
void f() {
switch(0) {
case 0 + 1:
case 100 + eval:
case 200 + cval:
case 300 + ceval:
case 400 + Struct::sval:
case 500 + Struct::seval:
case 600 + itval:
case 700 + etval:
case 800 + (int)1.5:
case 900 + sizeof(Struct):
case 1000 + (true? 1 + cval * Struct::sval ^
itval / (int)1.5 - sizeof(Struct) : 0):
;
}
}
typedef C<itval, etval> T0;
};
template struct C<1, eval>;
template struct C<cval, ceval>;
template struct C<Struct::sval, Struct::seval>;
enum {
a = sizeof(int) == 8,
b = a? 8 : 4
};
|
