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/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2014 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 "testsuite.h"
#include "tokenize.h"
#include "token.h"
#include "settings.h"
#include "check.h"
extern std::ostringstream errout;
class TestGarbage : public TestFixture {
public:
TestGarbage() : TestFixture("TestGarbage") {
}
private:
void run() {
// don't freak out when the syntax is wrong
TEST_CASE(wrong_syntax1);
TEST_CASE(wrong_syntax2);
TEST_CASE(wrong_syntax3); // #3544
TEST_CASE(wrong_syntax4); // #3618
TEST_CASE(wrong_syntax_if_macro); // #2518 - if MACRO()
TEST_CASE(wrong_syntax_class_x_y); // #3585 - class x y { };
TEST_CASE(syntax_case_default);
TEST_CASE(garbageCode1);
TEST_CASE(garbageCode2); // #4300
TEST_CASE(garbageCode3); // #4869
TEST_CASE(garbageCode4); // #4887
TEST_CASE(garbageCode5); // #5168
TEST_CASE(garbageCode6); // #5214
TEST_CASE(garbageCode7);
TEST_CASE(garbageCode8); // #5511
TEST_CASE(garbageCode9); // #5604
TEST_CASE(garbageCode10); // #6127
TEST_CASE(garbageCode11);
TEST_CASE(garbageCode12);
TEST_CASE(astGarbage);
}
std::string checkCode(const char code[], const char filename[] = "test.cpp") {
errout.str("");
Settings settings;
settings.debugwarnings = true;
settings.addEnabled("style");
settings.addEnabled("warning");
settings.addEnabled("portability");
settings.addEnabled("performance");
settings.inconclusive = true;
settings.experimental = true;
// tokenize..
Tokenizer tokenizer(&settings, this);
std::istringstream istr(code);
tokenizer.tokenize(istr, filename);
// call all "runChecks" in all registered Check classes
for (std::list<Check *>::const_iterator it = Check::instances().begin(); it != Check::instances().end(); ++it) {
(*it)->runChecks(&tokenizer, &settings, this);
}
tokenizer.simplifyTokenList2();
// call all "runSimplifiedChecks" in all registered Check classes
for (std::list<Check *>::const_iterator it = Check::instances().begin(); it != Check::instances().end(); ++it) {
(*it)->runSimplifiedChecks(&tokenizer, &settings, this);
}
return tokenizer.tokens()->stringifyList(false, false, false, true, false, 0, 0);
}
void wrong_syntax1() {
{
const char code[] ="TR(kvmpio, PROTO(int rw), ARGS(rw), TP_(aa->rw;))";
ASSERT_EQUALS("TR ( kvmpio , PROTO ( int rw ) , ARGS ( rw ) , TP_ ( aa . rw ; ) )", checkCode(code));
ASSERT_EQUALS("", errout.str());
}
{
const char code[] ="struct A { template<int> struct { }; };";
ASSERT_THROW(checkCode(code), InternalError);
}
{
const char code[] ="enum ABC { A,B, typedef enum { C } };";
ASSERT_THROW(checkCode(code), InternalError);
}
{
// #3314 - don't report syntax error.
const char code[] ="struct A { typedef B::C (A::*f)(); };";
checkCode(code);
ASSERT_EQUALS("[test.cpp:1]: (debug) Failed to parse 'typedef B :: C ( A :: * f ) ( ) ;'. The checking continues anyway.\n", errout.str());
}
}
void wrong_syntax2() { // #3504
const char code[] = "void f() {\n"
" X<int> x;\n"
" Y<int, int, int, int, int, char> y;\n"
"}\n"
"\n"
"void G( template <typename T> class (j) ) {}";
// don't segfault..
checkCode(code);
}
void wrong_syntax3() { // #3544
const char code[] = "X #define\n"
"{\n"
" (\n"
" for( #endif typedef typedef cb[N] )\n"
" ca[N]; = cb[i]\n"
" )\n"
"}";
Settings settings;
Tokenizer tokenizer(&settings, this);
std::istringstream istr(code);
try {
tokenizer.tokenize(istr, "test.cpp");
assertThrowFail(__FILE__, __LINE__);
} catch (InternalError& e) {
ASSERT_EQUALS("Analysis failed. If the code is valid then please report this failure.", e.errorMessage);
ASSERT_EQUALS("cppcheckError", e.id);
ASSERT_EQUALS(5, e.token->linenr());
}
}
void wrong_syntax4() { // #3618
const char code[] = "typedef void (x) (int); return x&";
ASSERT_THROW(checkCode(code), InternalError);
}
void wrong_syntax_if_macro() {
// #2518 #4171
ASSERT_THROW(checkCode("void f() { if MACRO(); }"), InternalError);
// #4668 - note there is no semicolon after MACRO()
ASSERT_THROW(checkCode("void f() { if (x) MACRO() {} }"), InternalError);
// #4810 - note there is no semicolon after MACRO()
ASSERT_THROW(checkCode("void f() { if (x) MACRO() else ; }"), InternalError);
}
void wrong_syntax_class_x_y() {
// #3585
const char code[] = "class x y { };";
errout.str("");
Settings settings;
settings.addEnabled("information");
Tokenizer tokenizer(&settings, this);
std::istringstream istr(code);
tokenizer.tokenize(istr, "test.c");
tokenizer.simplifyTokenList2();
ASSERT_EQUALS("[test.c:1]: (information) The code 'class x y {' is not handled. You can use -I or --include to add handling of this code.\n", errout.str());
}
void syntax_case_default() {
ASSERT_THROW(checkCode("void f() {switch (n) { case: z(); break;}}"), InternalError);
ASSERT_THROW(checkCode("void f() {switch (n) { case;: z(); break;}}"), InternalError);
ASSERT_THROW(checkCode("void f() {switch (n) { case {}: z(); break;}}"), InternalError);
ASSERT_THROW(checkCode("void f() {switch (n) { case 0?{1}:{2} : z(); break;}}"), InternalError);
ASSERT_THROW(checkCode("void f() {switch (n) { case 0?1;:{2} : z(); break;}}"), InternalError);
ASSERT_THROW(checkCode("void f() {switch (n) { case 0?(1?{3:4}):2 : z(); break;}}"), InternalError);
//ticket #4234
ASSERT_THROW(checkCode("( ) { switch break ; { switch ( x ) { case } y break ; : } }"), InternalError);
//ticket #4267
ASSERT_THROW(checkCode("f ( ) { switch break; { switch ( x ) { case } case break; -6: ( ) ; } }"), InternalError);
}
void garbageCode1() {
checkCode("struct x foo_t; foo_t typedef y;");
}
void garbageCode2() { //#4300 (segmentation fault)
ASSERT_THROW(checkCode("enum { D = 1 struct { } ; } s.b = D;"), InternalError);
}
void garbageCode3() { //#4849 (segmentation fault in Tokenizer::simplifyStructDecl (invalid code))
ASSERT_THROW(checkCode("enum { D = 2 s ; struct y { x } ; } { s.a = C ; s.b = D ; }"), InternalError);
}
void garbageCode4() { // #4887
ASSERT_THROW(checkCode("void f ( ) { = a ; if ( 1 ) if = ( 0 ) ; }"), InternalError);
}
void garbageCode5() { // #5168
checkCode("( asm : ; void : );");
}
void garbageCode6() { // #5214
checkCode("int b = ( 0 ? ? ) 1 : 0 ;");
checkCode("int a = int b = ( 0 ? ? ) 1 : 0 ;");
}
void garbageCode7() {
ASSERT_THROW(checkCode("1 (int j) { return return (c) * sizeof } y[1];"), InternalError);
checkCode("foo(Args&&...) fn void = { } auto template<typename... bar(Args&&...)");
}
void garbageCode8() { // #5604
ASSERT_THROW(checkCode("{ enum struct : };"), InternalError);
ASSERT_THROW(checkCode("int ScopedEnum{ template<typename T> { { e = T::error }; };\n"
"ScopedEnum1<int> se1; { enum class E : T { e = 0 = e ScopedEnum2<void*> struct UnscopedEnum3 { T{ e = 4 }; };\n"
"arr[(int) E::e]; }; UnscopedEnum3<int> e2 = f()\n"
"{ { e = e1; T::error } int test1 ue2; g() { enum class E { e = T::error }; return E::e; } int test2 = } \n"
"namespace UnscopedEnum { template<typename T> struct UnscopedEnum1 { E{ e = T::error }; }; UnscopedEnum1<int> { enum E : { e = 0 }; };\n"
"UnscopedEnum2<void*> ue3; template<typename T> struct UnscopedEnum3 { enum { }; }; int arr[E::e]; };\n"
"UnscopedEnum3<int> namespace template<typename T> int f() { enum E { e }; T::error }; return (int) E(); } int test1 int g() { enum E { e = E };\n"
"E::e; } int test2 = g<int>(); }"), InternalError);
}
void garbageCode9() {
ASSERT_THROW(checkCode("enum { e = { } } ( ) { { enum { } } } { e } "), InternalError);
}
void garbageCode10() { // #6127
checkCode("for( rl=reslist; rl!=NULL; rl=rl->next )");
}
void garbageCode11() { // do not crash
checkCode("( ) &");
}
void garbageCode12() { // do not crash
checkCode("{ g; S (void) { struct } { } int &g; }");
}
void astGarbage() {
checkCode("--"); // don't crash
checkCode("N 1024 float a[N], b[N + 3], c[N]; void N; (void) i;\n"
"int #define for (i = avx_test i < c[i]; i++)\n"
"b[i + 3] = a[i] * {}"); // Don't hang (#5787)
checkCode("START_SECTION([EXTRA](bool isValid(const String &filename)))"); // Don't crash (#5991)
}
};
REGISTER_TEST(TestGarbage)
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