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// RUN: %clang_cc1 -analyze -analyzer-checker=core,debug.ExprInspection -verify -w -std=c++03 %s
// RUN: %clang_cc1 -analyze -analyzer-checker=core,debug.ExprInspection -verify -w -std=c++11 %s
extern bool clang_analyzer_eval(bool);
struct Trivial {
Trivial(int x) : value(x) {}
int value;
};
struct NonTrivial : public Trivial {
NonTrivial(int x) : Trivial(x) {}
~NonTrivial();
};
Trivial getTrivial() {
return Trivial(42); // no-warning
}
const Trivial &getTrivialRef() {
return Trivial(42); // expected-warning {{Address of stack memory associated with temporary object of type 'Trivial' returned to caller}}
}
NonTrivial getNonTrivial() {
return NonTrivial(42); // no-warning
}
const NonTrivial &getNonTrivialRef() {
return NonTrivial(42); // expected-warning {{Address of stack memory associated with temporary object of type 'NonTrivial' returned to caller}}
}
namespace rdar13265460 {
struct TrivialSubclass : public Trivial {
TrivialSubclass(int x) : Trivial(x), anotherValue(-x) {}
int anotherValue;
};
TrivialSubclass getTrivialSub() {
TrivialSubclass obj(1);
obj.value = 42;
obj.anotherValue = -42;
return obj;
}
void testImmediate() {
TrivialSubclass obj = getTrivialSub();
clang_analyzer_eval(obj.value == 42); // expected-warning{{TRUE}}
clang_analyzer_eval(obj.anotherValue == -42); // expected-warning{{TRUE}}
clang_analyzer_eval(getTrivialSub().value == 42); // expected-warning{{TRUE}}
clang_analyzer_eval(getTrivialSub().anotherValue == -42); // expected-warning{{TRUE}}
}
void testMaterializeTemporaryExpr() {
const TrivialSubclass &ref = getTrivialSub();
clang_analyzer_eval(ref.value == 42); // expected-warning{{TRUE}}
const Trivial &baseRef = getTrivialSub();
clang_analyzer_eval(baseRef.value == 42); // expected-warning{{TRUE}}
}
}
namespace rdar13281951 {
struct Derived : public Trivial {
Derived(int value) : Trivial(value), value2(-value) {}
int value2;
};
void test() {
Derived obj(1);
obj.value = 42;
const Trivial * const &pointerRef = &obj;
clang_analyzer_eval(pointerRef->value == 42); // expected-warning{{TRUE}}
}
}
namespace compound_literals {
struct POD {
int x, y;
};
struct HasCtor {
HasCtor(int x, int y) : x(x), y(y) {}
int x, y;
};
struct HasDtor {
int x, y;
~HasDtor();
};
struct HasCtorDtor {
HasCtorDtor(int x, int y) : x(x), y(y) {}
~HasCtorDtor();
int x, y;
};
void test() {
clang_analyzer_eval(((POD){1, 42}).y == 42); // expected-warning{{TRUE}}
clang_analyzer_eval(((HasDtor){1, 42}).y == 42); // expected-warning{{TRUE}}
#if __cplusplus >= 201103L
clang_analyzer_eval(((HasCtor){1, 42}).y == 42); // expected-warning{{TRUE}}
// FIXME: should be TRUE, but we don't inline the constructors of
// temporaries because we can't model their destructors yet.
clang_analyzer_eval(((HasCtorDtor){1, 42}).y == 42); // expected-warning{{UNKNOWN}}
#endif
}
}
namespace destructors {
void testPR16664Crash() {
struct Dtor {
~Dtor();
};
extern bool coin();
extern bool check(const Dtor &);
// Don't crash here.
if (coin() && (coin() || coin() || check(Dtor()))) {
Dtor();
}
}
void testConsistency(int i) {
struct NoReturnDtor {
~NoReturnDtor() __attribute__((noreturn));
};
extern bool check(const NoReturnDtor &);
if (i == 5 && (i == 4 || i == 5 || check(NoReturnDtor())))
clang_analyzer_eval(true); // expected-warning{{TRUE}}
if (i != 5)
return;
if (i == 5 && (i == 4 || check(NoReturnDtor()) || i == 5)) {
// FIXME: Should be no-warning, because the noreturn destructor should
// fire on all paths.
clang_analyzer_eval(true); // expected-warning{{TRUE}}
}
}
}
void testStaticMaterializeTemporaryExpr() {
static const Trivial &ref = getTrivial();
clang_analyzer_eval(ref.value == 42); // expected-warning{{TRUE}}
static const Trivial &directRef = Trivial(42);
clang_analyzer_eval(directRef.value == 42); // expected-warning{{TRUE}}
#if __has_feature(cxx_thread_local)
thread_local static const Trivial &threadRef = getTrivial();
clang_analyzer_eval(threadRef.value == 42); // expected-warning{{TRUE}}
thread_local static const Trivial &threadDirectRef = Trivial(42);
clang_analyzer_eval(threadDirectRef.value == 42); // expected-warning{{TRUE}}
#endif
}
namespace PR16629 {
struct A {
explicit A(int* p_) : p(p_) {}
int* p;
};
extern void escape(const A*[]);
extern void check(int);
void callEscape(const A& a) {
const A* args[] = { &a };
escape(args);
}
void testNoWarning() {
int x;
callEscape(A(&x));
check(x); // Analyzer used to give a "x is uninitialized warning" here
}
void set(const A*a[]) {
*a[0]->p = 47;
}
void callSet(const A& a) {
const A* args[] = { &a };
set(args);
}
void testConsistency() {
int x;
callSet(A(&x));
clang_analyzer_eval(x == 47); // expected-warning{{TRUE}}
}
}
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