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/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2012 Daniel Marjamäki and 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 "tokenize.h"
#include "check64bit.h"
#include "testsuite.h"
#include <sstream>
extern std::ostringstream errout;
class Test64BitPortability : public TestFixture {
public:
Test64BitPortability() : TestFixture("Test64BitPortability")
{ }
private:
void run() {
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("");
Settings settings;
settings.addEnabled("portability");
// 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"
"}\n");
ASSERT_EQUALS("", errout.str());
}
void functionpar() {
check("int foo(int *p)\n"
"{\n"
" int a = p;\n"
" return a + 4;\n"
"}\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"
"}\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"
"}\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"
"}\n");
ASSERT_EQUALS("[test.cpp:3]: (portability) Assigning an integer to a pointer is not portable.\n", errout.str());
}
void structmember() {
check("struct Foo { int *p };\n"
"void f(struct Foo *foo) {\n"
" int i = foo->p;\n"
"}\n");
TODO_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"
"}\n");
ASSERT_EQUALS("", errout.str());
}
void ptrarithmetic() {
// #3073
check("void foo(int *p) {\n"
" int x = 10;\n"
" int *a = p + x;\n"
"}\n");
ASSERT_EQUALS("", errout.str());
check("void foo(int *p) {\n"
" int x = 10;\n"
" int *a = x + p;\n"
"}\n");
ASSERT_EQUALS("", errout.str());
check("void foo(int *p) {\n"
" int x = 10;\n"
" int *a = x * x;\n"
"}\n");
TODO_ASSERT_EQUALS("error", "", errout.str());
check("void foo(int *start, int *end) {\n"
" int len;\n"
" int len = end + 10 - start;\n"
"}\n");
ASSERT_EQUALS("", errout.str());
}
void returnIssues() {
check("void* foo(int i) {\n"
" return i;\n"
"}\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"
"}\n");
ASSERT_EQUALS("", errout.str());
check("int foo(int i) {\n"
" return i;\n"
"}\n");
ASSERT_EQUALS("", errout.str());
check("int foo(char* c) {\n"
" return c;\n"
"}\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"
"}\n");
ASSERT_EQUALS("", errout.str());
}
};
REGISTER_TEST(Test64BitPortability)
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