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testmemleak.cpp
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2694 lines (2388 loc) · 86.1 KB
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/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2022 Cppcheck team.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "checkmemoryleak.h"
#include "errortypes.h"
#include "settings.h"
#include "symboldatabase.h"
#include "testsuite.h"
#include "token.h"
#include "tokenize.h"
#include <iosfwd>
#include <list>
#include <memory>
#include <string>
class TestMemleakInClass;
class TestMemleakNoVar;
class TestMemleakStructMember;
class TestMemleak : private TestFixture {
public:
TestMemleak() : TestFixture("TestMemleak") {}
private:
Settings settings;
void run() override {
TEST_CASE(testFunctionReturnType);
TEST_CASE(open);
}
#define functionReturnType(code) functionReturnType_(code, __FILE__, __LINE__)
CheckMemoryLeak::AllocType functionReturnType_(const char code[], const char* file, int line) {
// Clear the error buffer..
errout.str("");
// Tokenize..
Tokenizer tokenizer(&settings, this);
std::istringstream istr(code);
ASSERT_LOC(tokenizer.tokenize(istr, "test.cpp"), file, line);
const CheckMemoryLeak c(&tokenizer, this, &settings);
return (c.functionReturnType)(&tokenizer.getSymbolDatabase()->scopeList.front().functionList.front());
}
void testFunctionReturnType() {
{
const char code[] = "const char *foo()\n"
"{ return 0; }";
ASSERT_EQUALS(CheckMemoryLeak::No, functionReturnType(code));
}
{
const char code[] = "Fred *newFred()\n"
"{ return new Fred; }";
ASSERT_EQUALS(CheckMemoryLeak::New, functionReturnType(code));
}
{
const char code[] = "char *foo()\n"
"{ return new char[100]; }";
ASSERT_EQUALS(CheckMemoryLeak::NewArray, functionReturnType(code));
}
{
const char code[] = "char *foo()\n"
"{\n"
" char *p = new char[100];\n"
" return p;\n"
"}";
ASSERT_EQUALS(CheckMemoryLeak::NewArray, functionReturnType(code));
}
}
void open() {
const char code[] = "class A {\n"
" static int open() {\n"
" return 1;\n"
" }\n"
"\n"
" A() {\n"
" int ret = open();\n"
" }\n"
"};\n";
// Clear the error buffer..
errout.str("");
Tokenizer tokenizer(&settings, this);
std::istringstream istr(code);
ASSERT(tokenizer.tokenize(istr, "test.cpp"));
// there is no allocation
const Token *tok = Token::findsimplematch(tokenizer.tokens(), "ret =");
const CheckMemoryLeak check(&tokenizer, nullptr, &settings);
ASSERT_EQUALS(CheckMemoryLeak::No, check.getAllocationType(tok->tokAt(2), 1));
}
};
REGISTER_TEST(TestMemleak)
class TestMemleakInFunction : public TestFixture {
public:
TestMemleakInFunction() : TestFixture("TestMemleakInFunction") {}
private:
Settings settings0;
Settings settings1;
Settings settings2;
#define check(...) check_(__FILE__, __LINE__, __VA_ARGS__)
void check_(const char* file, int line, const char code[]) {
// Clear the error buffer..
errout.str("");
Settings *settings = &settings1;
// Tokenize..
Tokenizer tokenizer(settings, this);
std::istringstream istr(code);
ASSERT_LOC(tokenizer.tokenize(istr, "test.cpp"), file, line);
// Check for memory leaks..
CheckMemoryLeakInFunction checkMemoryLeak(&tokenizer, settings, this);
checkMemoryLeak.checkReallocUsage();
}
void run() override {
LOAD_LIB_2(settings1.library, "std.cfg");
LOAD_LIB_2(settings1.library, "posix.cfg");
LOAD_LIB_2(settings2.library, "std.cfg");
TEST_CASE(realloc1);
TEST_CASE(realloc2);
TEST_CASE(realloc3);
TEST_CASE(realloc4);
TEST_CASE(realloc5);
TEST_CASE(realloc7);
TEST_CASE(realloc8);
TEST_CASE(realloc9);
TEST_CASE(realloc10);
TEST_CASE(realloc11);
TEST_CASE(realloc12);
TEST_CASE(realloc13);
TEST_CASE(realloc14);
TEST_CASE(realloc15);
TEST_CASE(realloc16);
TEST_CASE(realloc17);
TEST_CASE(realloc18);
TEST_CASE(realloc19);
TEST_CASE(realloc20);
TEST_CASE(realloc21);
TEST_CASE(realloc22);
TEST_CASE(realloc23);
TEST_CASE(realloc24); // #9228
TEST_CASE(reallocarray1);
}
void realloc1() {
check("void foo()\n"
"{\n"
" char *a = (char *)malloc(10);\n"
" a = realloc(a, 100);\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (error) Common realloc mistake: \'a\' nulled but not freed upon failure\n", errout.str());
}
void realloc2() {
check("void foo()\n"
"{\n"
" char *a = (char *)malloc(10);\n"
" a = (char *)realloc(a, 100);\n"
" free(a);\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (error) Common realloc mistake: \'a\' nulled but not freed upon failure\n", errout.str());
}
void realloc3() {
check("void foo()\n"
"{\n"
" char *a = 0;\n"
" if ((a = realloc(a, 100)) == NULL)\n"
" return;\n"
" free(a);\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void realloc4() {
check("void foo()\n"
"{\n"
" static char *a = 0;\n"
" if ((a = realloc(a, 100)) == NULL)\n"
" return;\n"
" free(a);\n"
"}");
TODO_ASSERT_EQUALS("[test.cpp:5]: (error) Memory leak: a\n",
"[test.cpp:4]: (error) Common realloc mistake: \'a\' nulled but not freed upon failure\n",
errout.str());
}
void realloc5() {
check("void foo()\n"
"{\n"
" char *buf;\n"
" char *new_buf;\n"
" buf = calloc( 10 );\n"
" new_buf = realloc ( buf, 20);\n"
" if ( !new_buf )\n"
" free(buf);\n"
" else\n"
" free(new_buf);\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void realloc7() {
check("bool foo(size_t nLen, char* pData)\n"
"{\n"
" pData = (char*) realloc(pData, sizeof(char) + (nLen + 1)*sizeof(char));\n"
" if ( pData == NULL )\n"
" {\n"
" return false;\n"
" }\n"
" free(pData);\n"
" return true;\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void realloc8() {
check("void foo()\n"
"{\n"
" char *origBuf = m_buf;\n"
" m_buf = (char *) realloc (m_buf, m_capacity + growBy);\n"
" if (!m_buf) {\n"
" m_buf = origBuf;\n"
" }\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void realloc9() {
check("void foo()\n"
"{\n"
" x = realloc(x,100);\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void realloc10() {
check("void foo() {\n"
" char *pa, *pb;\n"
" pa = pb = malloc(10);\n"
" pa = realloc(pa, 20);"
" exit();\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void realloc11() {
check("void foo() {\n"
" char *p;\n"
" p = realloc(p, size);\n"
" if (!p)\n"
" error();\n"
" usep(p);\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void realloc12() {
check("void foo(int x)\n"
"{\n"
" char *a = 0;\n"
" if ((a = realloc(a, x + 100)) == NULL)\n"
" return;\n"
" free(a);\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void realloc13() {
check("void foo()\n"
"{\n"
" char **str;\n"
" *str = realloc(*str,100);\n"
" free (*str);\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (error) Common realloc mistake: \'str\' nulled but not freed upon failure\n", errout.str());
}
void realloc14() {
check("void foo() {\n"
" char *p;\n"
" p = realloc(p, size + 1);\n"
" if (!p)\n"
" error();\n"
" usep(p);\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void realloc15() {
check("bool foo() {\n"
" char ** m_options;\n"
" m_options = (char**)realloc( m_options, 2 * sizeof(char*));\n"
" if( m_options == NULL )\n"
" return false;\n"
" return true;\n"
"}");
ASSERT_EQUALS("[test.cpp:3]: (error) Common realloc mistake: \'m_options\' nulled but not freed upon failure\n", errout.str());
}
void realloc16() {
check("void f(char *zLine) {\n"
" zLine = realloc(zLine, 42);\n"
" if (zLine) {\n"
" free(zLine);\n"
" }\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void realloc17() {
check("void foo()\n"
"{\n"
" void ***a = malloc(sizeof(a));\n"
" ***a = realloc(***(a), sizeof(a) * 2);\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (error) Common realloc mistake: \'a\' nulled but not freed upon failure\n", errout.str());
}
void realloc18() {
check("void foo()\n"
"{\n"
" void *a = malloc(sizeof(a));\n"
" a = realloc((void*)a, sizeof(a) * 2);\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (error) Common realloc mistake: \'a\' nulled but not freed upon failure\n", errout.str());
}
void realloc19() {
check("void foo()\n"
"{\n"
" void *a = malloc(sizeof(a));\n"
" a = (realloc((void*)((a)), sizeof(a) * 2));\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (error) Common realloc mistake: \'a\' nulled but not freed upon failure\n", errout.str());
}
void realloc20() {
check("void foo()\n"
"{\n"
" void *a = malloc(sizeof(a));\n"
" a = realloc((a) + 1, sizeof(a) * 2);\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void realloc21() {
check("char *foo(char *bs0)\n"
"{\n"
" char *bs = bs0;\n"
" bs = realloc(bs, 100);\n"
" if (bs == NULL) return bs0;\n"
" return bs;\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void realloc22() {
check("void foo(char **bsp)\n"
"{\n"
" char *bs = *bsp;\n"
" bs = realloc(bs, 100);\n"
" if (bs == NULL) return;\n"
" *bsp = bs;\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void realloc23() {
check("void foo(struct ABC *s)\n"
"{\n"
" uint32_t *cigar = s->cigar;\n"
" if (!(cigar = realloc(cigar, 100 * sizeof(*cigar))))\n"
" return;\n"
" s->cigar = cigar;\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void realloc24() { // #9228
check("void f() {\n"
"void *a = NULL;\n"
"a = realloc(a, 20);\n"
"}");
ASSERT_EQUALS("", errout.str());
check("void f() {\n"
"void *a = NULL;\n"
"a = malloc(10);\n"
"a = realloc(a, 20);\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (error) Common realloc mistake: \'a\' nulled but not freed upon failure\n", errout.str());
check("void f() {\n"
"void *a = std::nullptr;\n"
"a = malloc(10);\n"
"a = realloc(a, 20);\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (error) Common realloc mistake: \'a\' nulled but not freed upon failure\n", errout.str());
check("void f(char *b) {\n"
"void *a = NULL;\n"
"a = b;\n"
"a = realloc(a, 20);\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void reallocarray1() {
check("void foo()\n"
"{\n"
" char *a = (char *)malloc(10);\n"
" a = reallocarray(a, 100, 2);\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (error) Common reallocarray mistake: \'a\' nulled but not freed upon failure\n", errout.str());
}
};
REGISTER_TEST(TestMemleakInFunction)
class TestMemleakInClass : public TestFixture {
public:
TestMemleakInClass() : TestFixture("TestMemleakInClass") {}
private:
Settings settings;
/**
* Tokenize and execute leak check for given code
* @param code Source code
*/
void check_(const char* file, int line, const char code[]) {
// Clear the error buffer..
errout.str("");
// Tokenize..
Tokenizer tokenizer(&settings, this);
std::istringstream istr(code);
ASSERT_LOC(tokenizer.tokenize(istr, "test.cpp"), file, line);
// Check for memory leaks..
CheckMemoryLeakInClass checkMemoryLeak(&tokenizer, &settings, this);
(checkMemoryLeak.check)();
}
void run() override {
settings.severity.enable(Severity::warning);
settings.severity.enable(Severity::style);
LOAD_LIB_2(settings.library, "std.cfg");
TEST_CASE(class1);
TEST_CASE(class2);
TEST_CASE(class3);
TEST_CASE(class4);
TEST_CASE(class6);
TEST_CASE(class7);
TEST_CASE(class8);
TEST_CASE(class9);
TEST_CASE(class10);
TEST_CASE(class11);
TEST_CASE(class12);
TEST_CASE(class13);
TEST_CASE(class14);
TEST_CASE(class15);
TEST_CASE(class16);
TEST_CASE(class17);
TEST_CASE(class18);
TEST_CASE(class19); // ticket #2219
TEST_CASE(class20);
TEST_CASE(class21); // ticket #2517
TEST_CASE(class22); // ticket #3012
TEST_CASE(class23); // ticket #3303
TEST_CASE(class24); // ticket #3806 - false positive in copy constructor
TEST_CASE(class25); // ticket #4367 - false positive implementation for destructor is not seen
TEST_CASE(class26); // ticket #10789
TEST_CASE(class27); // ticket #8126
TEST_CASE(staticvar);
TEST_CASE(free_member_in_sub_func);
TEST_CASE(mismatch1);
TEST_CASE(mismatch2); // #5659
// allocating member variable in public function
TEST_CASE(func1);
TEST_CASE(func2);
}
void class1() {
check("class Fred\n"
"{\n"
"private:\n"
" char *str1;\n"
" char *str2;\n"
"public:\n"
" Fred();\n"
" ~Fred();\n"
"};\n"
"\n"
"Fred::Fred()\n"
"{\n"
" str1 = new char[10];\n"
" str2 = new char[10];\n"
"}\n"
"\n"
"Fred::~Fred()\n"
"{\n"
" delete [] str2;\n"
"}");
ASSERT_EQUALS("[test.cpp:4]: (style) Class 'Fred' is unsafe, 'Fred::str1' can leak by wrong usage.\n", errout.str());
check("class Fred\n"
"{\n"
"private:\n"
" char *str1;\n"
" char *str2;\n"
"public:\n"
" Fred()\n"
" {\n"
" str1 = new char[10];\n"
" str2 = new char[10];\n"
" }\n"
" ~Fred()\n"
" {\n"
" delete [] str2;\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style) Class 'Fred' is unsafe, 'Fred::str1' can leak by wrong usage.\n", errout.str());
}
void class2() {
check("class Fred\n"
"{\n"
"private:\n"
" char *str1;\n"
"public:\n"
" Fred();\n"
" ~Fred();\n"
"};\n"
"\n"
"Fred::Fred()\n"
"{\n"
" str1 = new char[10];\n"
"}\n"
"\n"
"Fred::~Fred()\n"
"{\n"
" free(str1);\n"
"}");
ASSERT_EQUALS("[test.cpp:17]: (error) Mismatching allocation and deallocation: Fred::str1\n", errout.str());
check("class Fred\n"
"{\n"
"private:\n"
" char *str1;\n"
"public:\n"
" Fred()\n"
" {\n"
" str1 = new char[10];\n"
" }\n"
" ~Fred()\n"
" {\n"
" free(str1);\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:12]: (error) Mismatching allocation and deallocation: Fred::str1\n", errout.str());
}
void class3() {
check("class Token;\n"
"\n"
"class Tokenizer\n"
"{\n"
"private:\n"
" Token *_tokens;\n"
"\n"
"public:\n"
" Tokenizer();\n"
" ~Tokenizer();\n"
" void deleteTokens(Token *tok);\n"
"};\n"
"\n"
"Tokenizer::Tokenizer()\n"
"{\n"
" _tokens = new Token;\n"
"}\n"
"\n"
"Tokenizer::~Tokenizer()\n"
"{\n"
" deleteTokens(_tokens);\n"
"}\n"
"\n"
"void Tokenizer::deleteTokens(Token *tok)\n"
"{\n"
" while (tok)\n"
" {\n"
" Token *next = tok->next();\n"
" delete tok;\n"
" tok = next;\n"
" }\n"
"}");
ASSERT_EQUALS("", errout.str());
check("class Token;\n"
"\n"
"class Tokenizer\n"
"{\n"
"private:\n"
" Token *_tokens;\n"
"\n"
"public:\n"
" Tokenizer()\n"
" {\n"
" _tokens = new Token;\n"
" }\n"
" ~Tokenizer()\n"
" {\n"
" deleteTokens(_tokens);\n"
" }\n"
" void deleteTokens(Token *tok)\n"
" {\n"
" while (tok)\n"
" {\n"
" Token *next = tok->next();\n"
" delete tok;\n"
" tok = next;\n"
" }\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void class4() {
check("struct ABC;\n"
"class Fred\n"
"{\n"
"private:\n"
" void addAbc(ABC *abc);\n"
"public:\n"
" void click();\n"
"};\n"
"\n"
"void Fred::addAbc(ABC* abc)\n"
"{\n"
" AbcPosts->Add(abc);\n"
"}\n"
"\n"
"void Fred::click()\n"
"{\n"
" ABC *p = new ABC;\n"
" addAbc( p );\n"
"}");
ASSERT_EQUALS("", errout.str());
check("struct ABC;\n"
"class Fred\n"
"{\n"
"private:\n"
" void addAbc(ABC* abc)\n"
" {\n"
" AbcPosts->Add(abc);\n"
" }\n"
"public:\n"
" void click()\n"
" {\n"
" ABC *p = new ABC;\n"
" addAbc( p );\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void class6() {
check("class Fred\n"
"{\n"
"public:\n"
" void foo();\n"
"};\n"
"\n"
"void Fred::foo()\n"
"{\n"
" char *str = new char[100];\n"
" delete [] str;\n"
" hello();\n"
"}");
ASSERT_EQUALS("", errout.str());
check("class Fred\n"
"{\n"
"public:\n"
" void foo()\n"
" {\n"
" char *str = new char[100];\n"
" delete [] str;\n"
" hello();\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void class7() {
check("class Fred\n"
"{\n"
"public:\n"
" int *i;\n"
" Fred();\n"
" ~Fred();\n"
"};\n"
"\n"
"Fred::Fred()\n"
"{\n"
" this->i = new int;\n"
"}\n"
"Fred::~Fred()\n"
"{\n"
" delete this->i;\n"
"}");
ASSERT_EQUALS("", errout.str());
check("class Fred\n"
"{\n"
"public:\n"
" int *i;\n"
" Fred()\n"
" {\n"
" this->i = new int;\n"
" }\n"
" ~Fred()\n"
" {\n"
" delete this->i;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void class8() {
check("class A\n"
"{\n"
"public:\n"
" void a();\n"
" void doNothing() { }\n"
"};\n"
"\n"
"void A::a()\n"
"{\n"
" int* c = new int(1);\n"
" delete c;\n"
" doNothing(c);\n"
"}");
ASSERT_EQUALS("", errout.str());
check("class A\n"
"{\n"
"public:\n"
" void a()\n"
" {\n"
" int* c = new int(1);\n"
" delete c;\n"
" doNothing(c);\n"
" }\n"
" void doNothing() { }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void class9() {
check("class A\n"
"{\n"
"public:\n"
" int * p;\n"
" A();\n"
" ~A();\n"
"};\n"
"\n"
"A::A()\n"
"{ p = new int; }\n"
"\n"
"A::~A()\n"
"{ delete (p); }");
ASSERT_EQUALS("", errout.str());
check("class A\n"
"{\n"
"public:\n"
" int * p;\n"
" A()\n"
" { p = new int; }\n"
" ~A()\n"
" { delete (p); }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void class10() {
check("class A\n"
"{\n"
"public:\n"
" int * p;\n"
" A();\n"
"};\n"
"A::A()\n"
"{ p = new int; }");
ASSERT_EQUALS("[test.cpp:4]: (style) Class 'A' is unsafe, 'A::p' can leak by wrong usage.\n", errout.str());
check("class A\n"
"{\n"
"public:\n"
" int * p;\n"
" A() { p = new int; }\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style) Class 'A' is unsafe, 'A::p' can leak by wrong usage.\n", errout.str());
}
void class11() {
check("class A\n"
"{\n"
"public:\n"
" int * p;\n"
" A() : p(new int[10])\n"
" { }"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style) Class 'A' is unsafe, 'A::p' can leak by wrong usage.\n", errout.str());
check("class A\n"
"{\n"
"public:\n"
" int * p;\n"
" A();\n"
"};\n"
"A::A() : p(new int[10])\n"
"{ }");
ASSERT_EQUALS("[test.cpp:4]: (style) Class 'A' is unsafe, 'A::p' can leak by wrong usage.\n", errout.str());
}
void class12() {
check("class A\n"
"{\n"
"private:\n"
" int *p;\n"
"public:\n"
" A();\n"
" ~A();\n"
" void cleanup();"
"};\n"
"\n"
"A::A()\n"
"{ p = new int[10]; }\n"
"\n"
"A::~A()\n"
"{ }\n"
"\n"
"void A::cleanup()\n"
"{ delete [] p; }");
ASSERT_EQUALS("[test.cpp:4]: (style) Class 'A' is unsafe, 'A::p' can leak by wrong usage.\n", errout.str());
check("class A\n"
"{\n"
"private:\n"
" int *p;\n"
"public:\n"
" A()\n"
" { p = new int[10]; }\n"
" ~A()\n"
" { }\n"
" void cleanup()\n"
" { delete [] p; }\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style) Class 'A' is unsafe, 'A::p' can leak by wrong usage.\n", errout.str());
}
void class13() {
check("class A\n"
"{\n"
"private:\n"
" int *p;\n"
"public:\n"
" A();\n"
" ~A();\n"
" void foo();"
"};\n"
"\n"
"A::A()\n"
"{ }\n"
"\n"
"A::~A()\n"
"{ }\n"
"\n"
"void A::foo()\n"
"{ p = new int[10]; delete [] p; }");
ASSERT_EQUALS("[test.cpp:17]: (warning) Possible leak in public function. The pointer 'p' is not deallocated before it is allocated.\n", errout.str());
check("class A\n"
"{\n"
"private:\n"
" int *p;\n"
"public:\n"
" A()\n"
" { }\n"
" ~A()\n"
" { }\n"
" void foo()\n"
" { p = new int[10]; delete [] p; }\n"
"};");
ASSERT_EQUALS("[test.cpp:11]: (warning) Possible leak in public function. The pointer 'p' is not deallocated before it is allocated.\n", errout.str());
}
void class14() {
check("class A\n"
"{\n"
" int *p;\n"
"public:\n"
" void init();\n"
"};\n"
"\n"
"void A::init()\n"
"{ p = new int[10]; }");
ASSERT_EQUALS("[test.cpp:9]: (warning) Possible leak in public function. The pointer 'p' is not deallocated before it is allocated.\n"
"[test.cpp:3]: (style) Class 'A' is unsafe, 'A::p' can leak by wrong usage.\n", errout.str());
check("class A\n"
"{\n"
" int *p;\n"
"public:\n"
" void init()\n"
" { p = new int[10]; }\n"
"};");
ASSERT_EQUALS("[test.cpp:6]: (warning) Possible leak in public function. The pointer 'p' is not deallocated before it is allocated.\n"
"[test.cpp:3]: (style) Class 'A' is unsafe, 'A::p' can leak by wrong usage.\n", errout.str());
check("class A\n"
"{\n"
" int *p;\n"
"public:\n"
" void init();\n"
"};\n"
"\n"
"void A::init()\n"
"{ p = new int; }");
ASSERT_EQUALS("[test.cpp:9]: (warning) Possible leak in public function. The pointer 'p' is not deallocated before it is allocated.\n"
"[test.cpp:3]: (style) Class 'A' is unsafe, 'A::p' can leak by wrong usage.\n", errout.str());
check("class A\n"
"{\n"
" int *p;\n"
"public:\n"
" void init()\n"
" { p = new int; }\n"