727 lines
23 KiB
C++
727 lines
23 KiB
C++
/*
|
|
* Cppcheck - A tool for static C/C++ code analysis
|
|
* Copyright (C) 2007-2010 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/>.
|
|
*/
|
|
|
|
|
|
|
|
// Check for unused variables..
|
|
|
|
#include "testsuite.h"
|
|
#include "tokenize.h"
|
|
#include "checkother.h"
|
|
|
|
#include <sstream>
|
|
extern std::ostringstream errout;
|
|
|
|
class TestUnusedVar : public TestFixture
|
|
{
|
|
public:
|
|
TestUnusedVar() : TestFixture("TestUnusedVar")
|
|
{ }
|
|
|
|
private:
|
|
void check(const char code[])
|
|
{
|
|
// Tokenize..
|
|
Tokenizer tokenizer;
|
|
std::istringstream istr(code);
|
|
tokenizer.tokenize(istr, "test.cpp");
|
|
|
|
// Clear the error buffer..
|
|
errout.str("");
|
|
|
|
// Check for unused variables..
|
|
Settings settings;
|
|
CheckOther checkOther(&tokenizer, &settings, this);
|
|
checkOther.checkStructMemberUsage();
|
|
}
|
|
|
|
void run()
|
|
{
|
|
TEST_CASE(structmember1);
|
|
TEST_CASE(structmember2);
|
|
TEST_CASE(structmember3);
|
|
TEST_CASE(structmember4);
|
|
TEST_CASE(structmember5);
|
|
TEST_CASE(structmember6);
|
|
TEST_CASE(structmember7);
|
|
TEST_CASE(structmember8);
|
|
TEST_CASE(structmember_extern); // No false positives for extern structs
|
|
|
|
TEST_CASE(localvar1);
|
|
TEST_CASE(localvar2);
|
|
TEST_CASE(localvar3);
|
|
TEST_CASE(localvar4);
|
|
TEST_CASE(localvar5);
|
|
TEST_CASE(localvar6);
|
|
TEST_CASE(localvar7);
|
|
TEST_CASE(localvar8);
|
|
TEST_CASE(localvar9); // ticket #1605
|
|
TEST_CASE(localvarasm);
|
|
|
|
// Don't give false positives for variables in structs/unions
|
|
TEST_CASE(localvarStruct1);
|
|
TEST_CASE(localvarStruct2);
|
|
TEST_CASE(localvarStruct3);
|
|
TEST_CASE(localvarStruct4); // Ticket #31: sigsegv on incomplete struct
|
|
|
|
TEST_CASE(localvarOp); // Usage with arithmetic operators
|
|
TEST_CASE(localvarInvert); // Usage with inverted variable
|
|
TEST_CASE(localvarIf); // Usage in if
|
|
TEST_CASE(localvarIfElse); // return tmp1 ? tmp2 : tmp3;
|
|
TEST_CASE(localvarOpAssign); // a |= b;
|
|
TEST_CASE(localvarFor); // for ( ; var; )
|
|
TEST_CASE(localvarShift); // 1 >> var
|
|
}
|
|
|
|
void structmember1()
|
|
{
|
|
check("struct abc\n"
|
|
"{\n"
|
|
" int a;\n"
|
|
" int b;\n"
|
|
" int c;\n"
|
|
"};\n");
|
|
ASSERT_EQUALS(std::string("[test.cpp:3]: (style) struct or union member 'abc::a' is never used\n"
|
|
"[test.cpp:4]: (style) struct or union member 'abc::b' is never used\n"
|
|
"[test.cpp:5]: (style) struct or union member 'abc::c' is never used\n"), errout.str());
|
|
}
|
|
|
|
void structmember2()
|
|
{
|
|
check("struct ABC\n"
|
|
"{\n"
|
|
" int a;\n"
|
|
" int b;\n"
|
|
" int c;\n"
|
|
"};\n"
|
|
"\n"
|
|
"void foo()\n"
|
|
"{\n"
|
|
" struct ABC abc;\n"
|
|
" int a = abc.a;\n"
|
|
" int b = abc.b;\n"
|
|
" int c = abc.c;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void structmember3()
|
|
{
|
|
check("struct ABC\n"
|
|
"{\n"
|
|
" int a;\n"
|
|
" int b;\n"
|
|
" int c;\n"
|
|
"};\n"
|
|
"\n"
|
|
"static struct ABC abc[] = { {1, 2, 3} };\n"
|
|
"\n"
|
|
"void foo()\n"
|
|
"{\n"
|
|
" int a = abc[0].a;\n"
|
|
" int b = abc[0].b;\n"
|
|
" int c = abc[0].c;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
|
|
void structmember4()
|
|
{
|
|
check("struct ABC\n"
|
|
"{\n"
|
|
" const int a;\n"
|
|
"};\n"
|
|
"\n"
|
|
"void foo()\n"
|
|
"{\n"
|
|
" ABC abc;\n"
|
|
" if (abc.a == 2);\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
|
|
void structmember5()
|
|
{
|
|
check("struct AB\n"
|
|
"{\n"
|
|
" int a;\n"
|
|
" int b;\n"
|
|
" void reset()\n"
|
|
" {\n"
|
|
" a = 1;\n"
|
|
" b = 2;\n"
|
|
" }\n"
|
|
"};\n"
|
|
"\n"
|
|
"void foo()\n"
|
|
"{\n"
|
|
" struct AB ab;\n"
|
|
" ab.reset();\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
|
|
void structmember6()
|
|
{
|
|
check("struct AB\n"
|
|
"{\n"
|
|
" int a;\n"
|
|
" int b;\n"
|
|
"};\n"
|
|
"\n"
|
|
"void foo(char *buf)\n"
|
|
"{\n"
|
|
" struct AB *ab = (struct AB *)&buf[10];\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("struct AB\n"
|
|
"{\n"
|
|
" int a;\n"
|
|
" int b;\n"
|
|
"};\n"
|
|
"\n"
|
|
"void foo(char *buf)\n"
|
|
"{\n"
|
|
" struct AB *ab = (AB *)&buf[10];\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void structmember7()
|
|
{
|
|
check("struct AB\n"
|
|
"{\n"
|
|
" int a;\n"
|
|
" int b;\n"
|
|
"};\n"
|
|
"\n"
|
|
"void foo(struct AB *ab)\n"
|
|
"{\n"
|
|
" ab->a = 0;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("struct AB\n"
|
|
"{\n"
|
|
" int a;\n"
|
|
" int b;\n"
|
|
"};\n"
|
|
"\n"
|
|
"void foo(struct AB _shuge *ab)\n"
|
|
"{\n"
|
|
" ab->a = 0;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void structmember8()
|
|
{
|
|
check("struct AB\n"
|
|
"{\n"
|
|
" int a;\n"
|
|
" int b;\n"
|
|
"};\n"
|
|
"\n"
|
|
"void foo(char *ab)\n"
|
|
"{\n"
|
|
" ((AB *)ab)->b = 0;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void structmember_extern()
|
|
{
|
|
// extern struct => no false positive
|
|
check("extern struct AB\n"
|
|
"{\n"
|
|
" int a;\n"
|
|
" int b;\n"
|
|
"} ab;\n"
|
|
"\n"
|
|
"void foo()\n"
|
|
"{\n"
|
|
" ab.b = 0;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
// global linkage => no false positive
|
|
check("struct AB\n"
|
|
"{\n"
|
|
" int a;\n"
|
|
" int b;\n"
|
|
"} ab;\n"
|
|
"\n"
|
|
"void foo()\n"
|
|
"{\n"
|
|
" ab.b = 0;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
// static linkage => error message
|
|
check("static struct AB\n"
|
|
"{\n"
|
|
" int a;\n"
|
|
" int b;\n"
|
|
"} ab;\n"
|
|
"\n"
|
|
"void foo()\n"
|
|
"{\n"
|
|
" ab.b = 0;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:3]: (style) struct or union member 'AB::a' is never used\n", errout.str());
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
void functionVariableUsage(const char code[])
|
|
{
|
|
// Tokenize..
|
|
Tokenizer tokenizer;
|
|
std::istringstream istr(code);
|
|
tokenizer.tokenize(istr, "test.cpp");
|
|
|
|
// Clear the error buffer..
|
|
errout.str("");
|
|
|
|
// Check for unused variables..
|
|
Settings settings;
|
|
CheckOther checkOther(&tokenizer, &settings, this);
|
|
checkOther.functionVariableUsage();
|
|
}
|
|
|
|
void localvar1()
|
|
{
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" int i = 0;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:2]: (style) Variable 'i' is assigned a value that is never used\n", errout.str());
|
|
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" bool i = false;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:2]: (style) Variable 'i' is assigned a value that is never used\n", errout.str());
|
|
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" int * i = 0;\n"
|
|
"}\n");
|
|
TODO_ASSERT_EQUALS("[test.cpp:2]: (style) Variable 'i' is assigned a value that is never used\n", errout.str());
|
|
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" void * i = 0;\n"
|
|
"}\n");
|
|
TODO_ASSERT_EQUALS("[test.cpp:2]: (style) Variable 'i' is assigned a value that is never used\n", errout.str());
|
|
}
|
|
|
|
void localvar2()
|
|
{
|
|
functionVariableUsage("int foo()\n"
|
|
"{\n"
|
|
" int i;\n"
|
|
" return i;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS(std::string("[test.cpp:2]: (style) Variable 'i' is not assigned a value\n"), errout.str());
|
|
|
|
functionVariableUsage("bool foo()\n"
|
|
"{\n"
|
|
" bool i;\n"
|
|
" return i;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS(std::string("[test.cpp:2]: (style) Variable 'i' is not assigned a value\n"), errout.str());
|
|
}
|
|
|
|
void localvar3()
|
|
{
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" int i;\n"
|
|
" if ( abc )\n"
|
|
" ;\n"
|
|
" else i = 0;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS(std::string("[test.cpp:2]: (style) Variable 'i' is assigned a value that is never used\n"), errout.str());
|
|
}
|
|
|
|
void localvar4()
|
|
{
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" int i = 0;\n"
|
|
" f(i);\n"
|
|
"}\n");
|
|
ASSERT_EQUALS(std::string(""), errout.str());
|
|
}
|
|
|
|
void localvar5()
|
|
{
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" int a = 0;\n"
|
|
" b = (char)a;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS(std::string(""), errout.str());
|
|
}
|
|
|
|
void localvar6()
|
|
{
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" int a = 0;\n"
|
|
" int b[10];\n"
|
|
" for (int i=0;i<10;++i)\n"
|
|
" b[i] = ++a;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS(std::string("[test.cpp:2]: (style) Variable 'b' is assigned a value that is never used\n"), errout.str());
|
|
}
|
|
|
|
void localvar7()// ticket 1253
|
|
{
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" int i;\n"
|
|
" i--;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS(std::string("[test.cpp:2]: (style) Variable 'i' is not assigned a value\n"), errout.str());
|
|
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" int i;\n"
|
|
" int &ii(i);\n"
|
|
" ii--;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS(std::string("[test.cpp:2]: (style) Variable 'i' is not assigned a value\n"), errout.str());
|
|
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" int i;\n"
|
|
" int &ii=i;\n"
|
|
" ii--;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS(std::string("[test.cpp:2]: (style) Variable 'i' is not assigned a value\n"), errout.str());
|
|
}
|
|
|
|
void localvar8()
|
|
{
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" int i;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:2]: (style) Unused variable: i\n", errout.str());
|
|
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" int i[2];\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:2]: (style) Unused variable: i\n", errout.str());
|
|
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" void * i;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:2]: (style) Unused variable: i\n", errout.str());
|
|
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" const void * i;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:2]: (style) Unused variable: i\n", errout.str());
|
|
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" A * i;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:2]: (style) Unused variable: i\n", errout.str());
|
|
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" struct A * i;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:2]: (style) Unused variable: i\n", errout.str());
|
|
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" int * i[2];\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:2]: (style) Unused variable: i\n", errout.str());
|
|
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" const int * i[2];\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:2]: (style) Unused variable: i\n", errout.str());
|
|
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" void * i[2];\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:2]: (style) Unused variable: i\n", errout.str());
|
|
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" const void * i[2];\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:2]: (style) Unused variable: i\n", errout.str());
|
|
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" A * i;\n"
|
|
" i->f();\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" char * i;\n"
|
|
" if (i);\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" char * i = 0;\n"
|
|
" if (i);\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" char * i = new char[10];\n"
|
|
" if (i);\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" int i = 0;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:2]: (style) Variable 'i' is assigned a value that is never used\n", errout.str());
|
|
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" int i(0);\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:2]: (style) Variable 'i' is assigned a value that is never used\n", errout.str());
|
|
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" char *i;\n"
|
|
" i = fgets();\n"
|
|
"}\n");
|
|
TODO_ASSERT_EQUALS("[test.cpp:2]: (style) Variable 'i' is assigned a value that is never used\n", errout.str());
|
|
ASSERT_EQUALS("", errout.str()); // current value - catch changes
|
|
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" char *i;\n"
|
|
" f(i);\n"
|
|
"}\n");
|
|
|
|
functionVariableUsage("int a;\n"
|
|
"void foo()\n"
|
|
"{\n"
|
|
" return &a;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
functionVariableUsage("int a[10];\n"
|
|
"void foo()\n"
|
|
"{\n"
|
|
" int *p = a;\n"
|
|
" for (int i = 0; i < 10; i++)\n"
|
|
" p[i] = 0;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
functionVariableUsage("int a[10];\n"
|
|
"void foo()\n"
|
|
"{\n"
|
|
" int *p = &a[0];\n"
|
|
" for (int i = 0; i < 10; i++)\n"
|
|
" p[i] = 0;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void localvar9()
|
|
{
|
|
// ticket #1605
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" int a[10];\n"
|
|
" for (int i = 0; i < 10; )\n"
|
|
" a[i++] = 0;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:2]: (style) Variable 'a' is assigned a value that is never used\n", errout.str());
|
|
}
|
|
|
|
void localvarasm()
|
|
{
|
|
functionVariableUsage("void foo(int &b)\n"
|
|
"{\n"
|
|
" int a;\n"
|
|
" asm();\n"
|
|
" b = a;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS(std::string(""), errout.str());
|
|
}
|
|
|
|
|
|
|
|
void localvarStruct1()
|
|
{
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" static const struct{ int x, y, w, h; } bounds = {1,2,3,4};\n"
|
|
" return bounds.x + bounds.y + bounds.w + bounds.h;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS(std::string(""), errout.str());
|
|
}
|
|
|
|
void localvarStruct2()
|
|
{
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" struct ABC { int a, b, c; };\n"
|
|
" struct ABC abc = { 1, 2, 3 };\n"
|
|
"}\n");
|
|
ASSERT_EQUALS(std::string(""), errout.str());
|
|
}
|
|
|
|
void localvarStruct3()
|
|
{
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" int a = 10;\n"
|
|
" union { struct { unsigned char x; }; unsigned char z; };\n"
|
|
" do {\n"
|
|
" func();\n"
|
|
" } while(a--);\n"
|
|
"}\n");
|
|
ASSERT_EQUALS(std::string("[test.cpp:2]: (style) Unused variable: z\n"), errout.str());
|
|
}
|
|
|
|
void localvarStruct4()
|
|
{
|
|
/* This must not SIGSEGV: */
|
|
// FIXME!!
|
|
//functionVariableUsage("void foo()\n"
|
|
// "{\n"
|
|
// " struct { \n");
|
|
}
|
|
|
|
|
|
|
|
void localvarOp()
|
|
{
|
|
const char op[] = "+-*/%&|^";
|
|
for (const char *p = op; *p; ++p)
|
|
{
|
|
std::string code("int main()\n"
|
|
"{\n"
|
|
" int tmp = 10;\n"
|
|
" return 123 " + std::string(1, *p) + " tmp;\n"
|
|
"}\n");
|
|
functionVariableUsage(code.c_str());
|
|
ASSERT_EQUALS(std::string(""), errout.str());
|
|
}
|
|
}
|
|
|
|
void localvarInvert()
|
|
{
|
|
functionVariableUsage("int main()\n"
|
|
"{\n"
|
|
" int tmp = 10;\n"
|
|
" return ~tmp;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS(std::string(""), errout.str());
|
|
}
|
|
|
|
void localvarIf()
|
|
{
|
|
functionVariableUsage("int main()\n"
|
|
"{\n"
|
|
" int tmp = 10;\n"
|
|
" if ( tmp )\n"
|
|
" return 1;\n"
|
|
" return 0;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS(std::string(""), errout.str());
|
|
}
|
|
|
|
void localvarIfElse()
|
|
{
|
|
functionVariableUsage("int foo()\n"
|
|
"{\n"
|
|
" int tmp1 = 1;\n"
|
|
" int tmp2 = 2;\n"
|
|
" int tmp3 = 3;\n"
|
|
" return tmp1 ? tmp2 : tmp3;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS(std::string(""), errout.str());
|
|
}
|
|
|
|
void localvarOpAssign()
|
|
{
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" int a = 1;\n"
|
|
" int b = 2;\n"
|
|
" a |= b;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS(std::string("[test.cpp:2]: (style) Variable 'a' is assigned a value that is never used\n"), errout.str());
|
|
}
|
|
|
|
void localvarFor()
|
|
{
|
|
functionVariableUsage("void foo()\n"
|
|
"{\n"
|
|
" int a = 1;\n"
|
|
" for (;a;);\n"
|
|
"}\n");
|
|
ASSERT_EQUALS(std::string(""), errout.str());
|
|
}
|
|
|
|
void localvarShift()
|
|
{
|
|
functionVariableUsage("int foo()\n"
|
|
"{\n"
|
|
" int var = 1;\n"
|
|
" return 1 >> var;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS(std::string(""), errout.str());
|
|
}
|
|
|
|
};
|
|
|
|
REGISTER_TEST(TestUnusedVar)
|
|
|
|
|