blob: 7461d75f673b011841d891cb3581a7ba5f3b70ce (
plain)
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 -analyze -analyzer-checker=core,alpha.core,debug.ExprInspection -verify %s
void clang_analyzer_eval(bool);
struct X0 { };
bool operator==(const X0&, const X0&);
// PR7287
struct test { int a[2]; };
void t2() {
test p = {{1,2}};
test q;
q = p;
}
bool PR7287(X0 a, X0 b) {
return operator==(a, b);
}
// Inlining non-static member operators mistakenly treated 'this' as the first
// argument for a while.
struct IntComparable {
bool operator==(int x) const {
return x == 0;
}
};
void testMemberOperator(IntComparable B) {
clang_analyzer_eval(B == 0); // expected-warning{{TRUE}}
}
namespace UserDefinedConversions {
class Convertible {
public:
operator int() const {
return 42;
}
operator bool() const {
return true;
}
};
void test(const Convertible &obj) {
clang_analyzer_eval((int)obj == 42); // expected-warning{{TRUE}}
clang_analyzer_eval(obj); // expected-warning{{TRUE}}
}
}
namespace RValues {
struct SmallOpaque {
float x;
int operator +() const {
return (int)x;
}
};
struct LargeOpaque {
float x[4];
int operator +() const {
return (int)x[0];
}
};
SmallOpaque getSmallOpaque() {
SmallOpaque obj;
obj.x = 1.0;
return obj;
}
LargeOpaque getLargeOpaque() {
LargeOpaque obj = LargeOpaque();
obj.x[0] = 1.0;
return obj;
}
void test(int coin) {
// Force a cache-out when we try to conjure a temporary region for the operator call.
// ...then, don't crash.
clang_analyzer_eval(+(coin ? getSmallOpaque() : getSmallOpaque())); // expected-warning{{UNKNOWN}}
clang_analyzer_eval(+(coin ? getLargeOpaque() : getLargeOpaque())); // expected-warning{{UNKNOWN}}
}
}
|