-
Notifications
You must be signed in to change notification settings - Fork 2
Expand file tree
/
Copy pathDoubleFreeRule.cpp
More file actions
156 lines (134 loc) · 3.69 KB
/
Copy pathDoubleFreeRule.cpp
File metadata and controls
156 lines (134 loc) · 3.69 KB
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
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
/**
*
* @file DoubleFreeRule.cpp
* @author Gaspard Kirira
*
* Copyright 2025, Gaspard Kirira. All rights reserved.
* https://github.com/vixcpp/vix
* Use of this source code is governed by a MIT license
* that can be found in the License file.
*
* Vix.cpp
*
*/
#include <vix/cli/errors/runtime/IRuntimeErrorRule.hpp>
#include <vix/cli/errors/runtime/RuntimeRuleUtils.hpp>
#include <filesystem>
#include <iostream>
#include <memory>
#include <string>
#include <vector>
#include <vix/cli/Style.hpp>
using namespace vix::cli::style;
namespace vix::cli::errors::runtime
{
namespace
{
enum class DoubleFreeKind
{
AsanDoubleFree,
LibcDoubleFree,
GenericDoubleFree,
};
DoubleFreeKind classify_issue(const std::string &log)
{
if (icontains(log, "AddressSanitizer") &&
(icontains(log, "double-free") || icontains(log, "double free")))
{
return DoubleFreeKind::AsanDoubleFree;
}
if (icontains(log, "free(): double free") ||
icontains(log, "double free detected"))
{
return DoubleFreeKind::LibcDoubleFree;
}
return DoubleFreeKind::GenericDoubleFree;
}
std::string choose_message(const std::string &log)
{
(void)log;
return "double free";
}
std::string choose_hint(const std::string &log)
{
switch (classify_issue(log))
{
case DoubleFreeKind::AsanDoubleFree:
case DoubleFreeKind::LibcDoubleFree:
case DoubleFreeKind::GenericDoubleFree:
default:
return "the same allocation was freed twice; check duplicate ownership";
}
}
std::vector<std::string> source_patterns_for_double_free()
{
return {
"delete[]",
"delete",
"free(",
"std::unique_ptr",
"std::shared_ptr",
".reset(",
".clear(",
};
}
bool looks_like_double_free_log(const std::string &log)
{
return icontains(log, "double-free") ||
icontains(log, "double free") ||
icontains(log, "free(): double free") ||
icontains(log, "attempting double-free") ||
icontains(log, "double free detected");
}
} // namespace
class DoubleFreeRule final : public IRuntimeErrorRule
{
public:
bool match(
const std::string &log,
const std::filesystem::path &sourceFile) const override
{
(void)sourceFile;
return looks_like_double_free_log(log);
}
bool handle(
const std::string &log,
const std::filesystem::path &sourceFile) const override
{
const std::string message = choose_message(log);
RuntimeLocation location = find_best_runtime_location(log, sourceFile);
if (!location.valid())
{
location = find_best_runtime_location_or_source_hint(
log,
sourceFile,
source_patterns_for_double_free());
}
std::cerr << RED
<< "runtime error: "
<< message
<< RESET << "\n";
if (location.valid())
{
const auto err = make_runtime_location(
location.file,
location.line,
location.column,
message);
print_runtime_codeframe(err);
}
print_runtime_hints_and_at(
{
choose_hint(log),
"prefer RAII, std::unique_ptr, std::vector, or clear ownership rules",
},
make_at_text(location, sourceFile));
print_runtime_log_excerpt(log, 20);
return true;
}
};
std::unique_ptr<IRuntimeErrorRule> makeDoubleFreeRule()
{
return std::make_unique<DoubleFreeRule>();
}
} // namespace vix::cli::errors::runtime