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cppcheck/test/test64bit.cpp at master · napcode/cppcheck · GitHub
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/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2019 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
"
check64bit.h
"
#
include
"
settings.h
"
#
include
"
testsuite.h
"
#
include
"
tokenize.h
"
class
Test64BitPortability
:
public
TestFixture
{
public:
Test64BitPortability
() : TestFixture(
"
Test64BitPortability
"
) {
}
private:
Settings settings;
void
run
() OVERRIDE {
settings.
addEnabled
(
"
portability
"
);
TEST_CASE
(novardecl);
TEST_CASE
(functionpar);
TEST_CASE
(structmember);
TEST_CASE
(ptrcompare);
TEST_CASE
(ptrarithmetic);
TEST_CASE
(returnIssues);
}
void
check
(
const
char
code[]) {
//
Clear the error buffer..
errout.
str
(
"
"
);
//
Tokenize..
Tokenizer
tokenizer
(&settings,
this
);
std::istringstream
istr
(code);
tokenizer.
tokenize
(istr,
"
test.cpp
"
);
//
Check char variable usage..
Check64BitPortability
check64BitPortability
(&tokenizer, &settings,
this
);
check64BitPortability.
pointerassignment
();
}
void
novardecl
() {
//
if the variable declarations can't be seen then skip the warning
check
(
"
void foo()
\n
"
"
{
\n
"
"
a = p;
\n
"
"
}
"
);
ASSERT_EQUALS
(
"
"
, errout.
str
());
}
void
functionpar
() {
check
(
"
int foo(int *p)
\n
"
"
{
\n
"
"
int a = p;
\n
"
"
return a + 4;
\n
"
"
}
"
);
ASSERT_EQUALS
(
"
[test.cpp:3]: (portability) Assigning a pointer to an integer is not portable.
\n
"
, errout.
str
());
check
(
"
int foo(int p[])
\n
"
"
{
\n
"
"
int a = p;
\n
"
"
return a + 4;
\n
"
"
}
"
);
ASSERT_EQUALS
(
"
[test.cpp:3]: (portability) Assigning a pointer to an integer is not portable.
\n
"
, errout.
str
());
check
(
"
int foo(int p[])
\n
"
"
{
\n
"
"
int *a = p;
\n
"
"
return a;
\n
"
"
}
"
);
ASSERT_EQUALS
(
"
[test.cpp:4]: (portability) Returning an address value in a function with integer return type is not portable.
\n
"
, errout.
str
());
check
(
"
void foo(int x)
\n
"
"
{
\n
"
"
int *p = x;
\n
"
"
*p = 0;
\n
"
"
}
"
);
ASSERT_EQUALS
(
"
[test.cpp:3]: (portability) Assigning an integer to a pointer is not portable.
\n
"
, errout.
str
());
check
(
"
int f(const char *p) {
\n
"
//
#4659
"
return 6 + p[2] * 256;
\n
"
"
}
"
);
ASSERT_EQUALS
(
"
"
, errout.
str
());
check
(
"
int foo(int *p) {
\n
"
//
#6096
"
bool a = p;
\n
"
"
return a;
\n
"
"
}
"
);
ASSERT_EQUALS
(
"
"
, errout.
str
());
}
void
structmember
() {
check
(
"
struct Foo { int *p; };
\n
"
"
void f(struct Foo *foo) {
\n
"
"
int i = foo->p;
\n
"
"
}
"
);
ASSERT_EQUALS
(
"
[test.cpp:3]: (portability) Assigning a pointer to an integer is not portable.
\n
"
, errout.
str
());
}
void
ptrcompare
() {
//
Ticket #2892
check
(
"
void foo(int *p) {
\n
"
"
int a = (p != NULL);
\n
"
"
}
"
);
ASSERT_EQUALS
(
"
"
, errout.
str
());
}
void
ptrarithmetic
() {
//
#3073
check
(
"
void foo(int *p) {
\n
"
"
int x = 10;
\n
"
"
int *a = p + x;
\n
"
"
}
"
);
ASSERT_EQUALS
(
"
"
, errout.
str
());
check
(
"
void foo(int *p) {
\n
"
"
int x = 10;
\n
"
"
int *a = x + p;
\n
"
"
}
"
);
ASSERT_EQUALS
(
"
"
, errout.
str
());
check
(
"
void foo(int *p) {
\n
"
"
int x = 10;
\n
"
"
int *a = x * x;
\n
"
"
}
"
);
ASSERT_EQUALS
(
"
[test.cpp:3]: (portability) Assigning an integer to a pointer is not portable.
\n
"
, errout.
str
());
check
(
"
void foo(int *start, int *end) {
\n
"
"
int len;
\n
"
"
int len = end + 10 - start;
\n
"
"
}
"
);
ASSERT_EQUALS
(
"
"
, errout.
str
());
}
void
returnIssues
() {
check
(
"
void* foo(int i) {
\n
"
"
return i;
\n
"
"
}
"
);
ASSERT_EQUALS
(
"
[test.cpp:2]: (portability) Returning an integer in a function with pointer return type is not portable.
\n
"
, errout.
str
());
check
(
"
void* foo(int* i) {
\n
"
"
return i;
\n
"
"
}
"
);
ASSERT_EQUALS
(
"
"
, errout.
str
());
check
(
"
void* foo() {
\n
"
"
return 0;
\n
"
"
}
"
);
ASSERT_EQUALS
(
"
"
, errout.
str
());
check
(
"
int foo(int i) {
\n
"
"
return i;
\n
"
"
}
"
);
ASSERT_EQUALS
(
"
"
, errout.
str
());
check
(
"
struct Foo {};
\n
"
"
\n
"
"
int* dostuff(Foo foo) {
\n
"
"
return foo;
\n
"
"
}
"
);
ASSERT_EQUALS
(
"
"
, errout.
str
());
check
(
"
int foo(char* c) {
\n
"
"
return c;
\n
"
"
}
"
);
ASSERT_EQUALS
(
"
[test.cpp:2]: (portability) Returning an address value in a function with integer return type is not portable.
\n
"
, errout.
str
());
check
(
"
int foo(char* c) {
\n
"
"
return 1+c;
\n
"
"
}
"
);
ASSERT_EQUALS
(
"
[test.cpp:2]: (portability) Returning an address value in a function with integer return type is not portable.
\n
"
, errout.
str
());
check
(
"
std::string foo(char* c) {
\n
"
"
return c;
\n
"
"
}
"
);
ASSERT_EQUALS
(
"
"
, errout.
str
());
check
(
"
int foo(char *a, char *b) {
\n
"
//
#4486
"
return a + 1 - b;
\n
"
"
}
"
);
ASSERT_EQUALS
(
"
"
, errout.
str
());
check
(
"
struct s {
\n
"
//
4642
"
int i;
\n
"
"
};
\n
"
"
int func(struct s *p) {
\n
"
"
return 1 + p->i;
\n
"
"
}
"
);
ASSERT_EQUALS
(
"
"
, errout.
str
());
check
(
"
static void __iomem *f(unsigned int port_no) {
\n
"
"
void __iomem *mmio = hpriv->mmio;
\n
"
"
return mmio + (port_no * 0x80);
\n
"
"
}
"
);
ASSERT_EQUALS
(
"
"
, errout.
str
());
//
#7247: don't check return statements in nested functions..
check
(
"
int foo() {
\n
"
"
struct {
\n
"
"
const char * name() { return
\"
abc
\"
; }
\n
"
"
} table;
\n
"
"
}
"
);
ASSERT_EQUALS
(
"
"
, errout.
str
());
//
#7451: Lambdas
check
(
"
const int* test(std::vector<int> outputs, const std::string& text) {
\n
"
"
auto it = std::find_if(outputs.begin(), outputs.end(),
\n
"
"
[&](int ele) { return
\"
test
\"
== text; });
\n
"
"
return nullptr;
\n
"
"
}
"
);
ASSERT_EQUALS
(
"
"
, errout.
str
());
}
};
REGISTER_TEST
(Test64BitPortability)
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