forked from danmar/cppcheck
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathgenerate_cfg_tests.cpp
More file actions
204 lines (181 loc) · 8.28 KB
/
generate_cfg_tests.cpp
File metadata and controls
204 lines (181 loc) · 8.28 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
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
#include <iostream>
#include <cstring>
#include <string>
#include <sstream>
#include <vector>
#include "tinyxml2.h"
static void testfunction(const tinyxml2::XMLElement *node, const std::string &functionName);
static std::vector<std::string> splitString(const char *str, char delim)
{
std::vector<std::string> ret;
while (const char *p = std::strchr(str,delim)) {
ret.push_back(std::string(str, p-str));
str = p + 1;
}
ret.push_back(str);
return ret;
}
static std::string replaceCharInString(std::string s, char from, char to)
{
for (int i = 0; i < s.size(); ++i) {
if (s[i] == from)
s[i] = to;
}
return s;
}
int main(int argc, char **argv)
{
if (argc != 2 || !std::strstr(argv[1], ".cfg")) {
std::cerr << "no cfg file\n";
return 1;
}
const char *cfgfile = argv[1];
tinyxml2::XMLDocument doc;
if (tinyxml2::XML_SUCCESS != doc.LoadFile(cfgfile)) {
std::cerr << "failed to load cfg file\n";
return 1;
}
std::string testfile(cfgfile);
if (testfile.find('/') != std::string::npos)
testfile = testfile.substr(testfile.rfind('/')+1);
testfile = "generated-cfg-tests-" + testfile.substr(0,testfile.find('.')) + ".cpp";
std::cout << "// auto generated tests from " << cfgfile << std::endl;
std::cout << "//" << std::endl;
std::cout << "// Generated by command:" << std::endl;
std::cout << "// " << argv[0] << ' ' << cfgfile << " > " << testfile << std::endl;
std::cout << "//" << std::endl;
std::cout << "// Recommended cppcheck command line:" << std::endl;
std::cout << "// $ cppcheck --enable=warning,information --inline-suppr --platform=unix64 " << testfile << std::endl;
std::cout << "// => 'unmatched suppression' warnings are false negatives." << std::endl;
std::cout << "//" << std::endl << std::endl ;
const tinyxml2::XMLElement * const rootnode = doc.FirstChildElement();
for (const tinyxml2::XMLElement *node = rootnode->FirstChildElement(); node; node = node->NextSiblingElement()) {
const std::string nodename = node->Name();
if (nodename == "memory" || nodename == "resource") {
//testalloc(node);
} else if (nodename == "function") {
for (const std::string &name : splitString(node->Attribute("name"), ','))
testfunction(node, name);
}
}
return 0;
}
static std::string functionCall(const std::string &functionName, bool useretval, int argNr, int numberOfArgs, const char badArg[])
{
std::ostringstream ostr;
if (useretval)
ostr << "result = ";
ostr << functionName << '(';
for (int i = 1; i <= numberOfArgs; ++i) {
if (i > 1)
ostr << ", ";
if (i == argNr)
ostr << badArg;
else
ostr << "arg" << i;
}
ostr << ')';
return ostr.str();
}
static std::string testFunctionArg(const std::string &functionName, bool useretval, const char type[], int argNr, int numberOfArgs, const char code[], const char suppress[], const char badArg[])
{
std::ostringstream ostr;
ostr << "void test__" << replaceCharInString(functionName,':','_') << "__arg" << argNr << "__" << type << "() {" << std::endl;
if (*code)
ostr << " " << code << std::endl;
ostr << " // cppcheck-suppress " << suppress << std::endl;
ostr << " " << functionCall(functionName, useretval, argNr, numberOfArgs, badArg) << ';' << std::endl;
ostr << '}';
return ostr.str();
}
static void testfunction(const tinyxml2::XMLElement *node, const std::string &functionName)
{
// How many args does this function take?
int numberOfArgs = 0;
for (const tinyxml2::XMLElement *child = node->FirstChildElement(); child; child = child->NextSiblingElement()) {
if (std::strcmp(child->Name(), "arg") == 0) {
const char *nr = child->Attribute("nr");
if (nr && std::isdigit(*nr) && std::atoi(nr) > numberOfArgs)
numberOfArgs = std::atoi(nr);
}
}
bool noreturn = false;
bool useretval = false;
bool pure = false;
//bool constant = false;
bool leakignore = false;
for (const tinyxml2::XMLElement *child = node->FirstChildElement(); child; child = child->NextSiblingElement()) {
if (std::strcmp(child->Name(), "noreturn") == 0)
noreturn = true;
else if (std::strcmp(child->Name(), "use-retval") == 0)
useretval = true;
else if (std::strcmp(child->Name(), "pure") == 0)
pure = true;
//else if (std::strcmp(child->Name(), "const") == 0)
// constant = true;
else if (std::strcmp(child->Name(), "leak-ignore") == 0)
leakignore = true;
}
if (noreturn) {
std::cout << "void test__" << replaceCharInString(functionName,':','_') << "__noreturn() {" << std::endl;
std::cout << " int x = 1;" << std::endl;
std::cout << " if (cond) { x=100; " << functionCall(functionName, useretval, -1, numberOfArgs, "") << "; }" << std::endl;
std::cout << " // cppcheck-suppress shiftTooManyBits" << std::endl;
std::cout << " x = 1 << x;" << std::endl;
std::cout << "}" << std::endl << std::endl;
}
if (useretval) {
std::cout << "void test__" << replaceCharInString(functionName,':','_') << "__useretval() {" << std::endl;
std::cout << " // cppcheck-suppress ignoredReturnValue" << std::endl;
std::cout << " " << functionCall(functionName, false, -1, numberOfArgs, "") << ';' << std::endl;
std::cout << "}" << std::endl << std::endl;
}
if (pure) {
std::cout << "void test__" << replaceCharInString(functionName,':','_') << "__pure(";
for (int i = 1; i <= numberOfArgs; ++i)
std::cout << (i>1?",":"") << "int arg" << i;
std::cout << ") {" << std::endl;
std::cout << " // cppcheck-suppress incorrectLogicOperator" << std::endl;
std::cout << " if ((" << functionCall(functionName, false, -1, numberOfArgs, "") << " > 10) || (";
std::cout << functionCall(functionName, false, -1, numberOfArgs, "") << " < 100)) {}" << std::endl;
std::cout << "}" << std::endl << std::endl;
}
if (leakignore && functionName.find("::") == std::string::npos) {
std::cout << "void test__" << replaceCharInString(functionName,':','_') << "__leakignore() {" << std::endl;
std::cout << " char *p = malloc(10); *p=0;" << std::endl;
std::cout << " " << functionCall(functionName, useretval, 1, numberOfArgs, "p") << ';' << std::endl;
std::cout << " // cppcheck-suppress memleak" << std::endl;
std::cout << "}" << std::endl << std::endl;
}
// Generate tests for args
for (int argNr = 1; argNr <= numberOfArgs; ++argNr) {
for (const tinyxml2::XMLElement *child = node->FirstChildElement(); child; child = child->NextSiblingElement()) {
if (std::strcmp(child->Name(), "arg") != 0)
continue;
const char *nrAttr = child->Attribute("nr");
if (!nrAttr || std::atoi(nrAttr) != argNr)
continue;
bool notbool = false;
bool notuninit = false;
bool notnull = false;
for (const tinyxml2::XMLElement *argCheck = child->FirstChildElement(); argCheck; argCheck = argCheck->NextSiblingElement()) {
if (std::strcmp(argCheck->Name(), "not-bool") == 0)
notbool = true;
else if (std::strcmp(argCheck->Name(), "not-null") == 0)
notnull = true;
else if (std::strcmp(argCheck->Name(), "not-uninit") == 0)
notuninit = true;
}
if (notbool) {
std::cout << testFunctionArg(functionName, useretval, "notbool", argNr, numberOfArgs, "", "invalidFunctionArgBool", "!x") << std::endl << std::endl;
}
if (notnull) {
std::cout << testFunctionArg(functionName, useretval, "notnull", argNr, numberOfArgs, "", "nullPointer", "NULL") << std::endl << std::endl;
}
if (notuninit) {
const char *code = notnull ? "int x[10];" : "int x;";
std::cout << testFunctionArg(functionName, useretval, "notuninit", argNr, numberOfArgs, code, "uninitvar", "x") << std::endl << std::endl;
}
}
}
}