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llvm-for-llvmta/tools/clang/test/Analysis/ctor.mm

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// RUN: %clang_analyze_cc1 -triple i386-apple-darwin10 -DI386 -analyzer-checker=core,debug.ExprInspection -fobjc-arc -analyzer-config c++-inlining=constructors -Wno-null-dereference -std=c++11 -verify -analyzer-config eagerly-assume=false %s
// RUN: %clang_analyze_cc1 -triple i386-apple-darwin10 -DI386 -analyzer-checker=core,debug.ExprInspection -fobjc-arc -analyzer-config c++-inlining=constructors -Wno-null-dereference -std=c++11 -verify -DTEST_INLINABLE_ALLOCATORS -analyzer-config eagerly-assume=false %s
// RUN: %clang_analyze_cc1 -triple x86_64-apple-darwin12 -analyzer-checker=core,debug.ExprInspection -fobjc-arc -analyzer-config c++-inlining=constructors -Wno-null-dereference -std=c++11 -verify -analyzer-config eagerly-assume=false %s
// RUN: %clang_analyze_cc1 -triple x86_64-apple-darwin12 -analyzer-checker=core,debug.ExprInspection -fobjc-arc -analyzer-config c++-inlining=constructors -Wno-null-dereference -std=c++11 -verify -DTEST_INLINABLE_ALLOCATORS -analyzer-config eagerly-assume=false %s
#include "Inputs/system-header-simulator-cxx.h"
void clang_analyzer_eval(bool);
void clang_analyzer_checkInlined(bool);
// A simplified version of std::move.
template <typename T>
T &&move(T &obj) {
return static_cast<T &&>(obj);
}
struct Wrapper {
__strong id obj;
};
void test() {
Wrapper w;
// force a diagnostic
*(char *)0 = 1; // expected-warning{{Dereference of null pointer}}
}
struct IntWrapper {
int x;
};
void testCopyConstructor() {
IntWrapper a;
a.x = 42;
IntWrapper b(a);
clang_analyzer_eval(b.x == 42); // expected-warning{{TRUE}}
}
struct NonPODIntWrapper {
int x;
virtual int get();
};
void testNonPODCopyConstructor() {
NonPODIntWrapper a;
a.x = 42;
NonPODIntWrapper b(a);
clang_analyzer_eval(b.x == 42); // expected-warning{{TRUE}}
}
namespace ConstructorVirtualCalls {
class A {
public:
int *out1, *out2, *out3;
virtual int get() { return 1; }
A(int *out1) {
*out1 = get();
}
};
class B : public A {
public:
virtual int get() { return 2; }
B(int *out1, int *out2) : A(out1) {
*out2 = get();
}
};
class C : public B {
public:
virtual int get() { return 3; }
C(int *out1, int *out2, int *out3) : B(out1, out2) {
*out3 = get();
}
};
void test() {
int a, b, c;
C obj(&a, &b, &c);
clang_analyzer_eval(a == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(b == 2); // expected-warning{{TRUE}}
clang_analyzer_eval(c == 3); // expected-warning{{TRUE}}
clang_analyzer_eval(obj.get() == 3); // expected-warning{{TRUE}}
// Sanity check for devirtualization.
A *base = &obj;
clang_analyzer_eval(base->get() == 3); // expected-warning{{TRUE}}
}
}
namespace TemporaryConstructor {
class BoolWrapper {
public:
BoolWrapper() {
clang_analyzer_checkInlined(true); // expected-warning{{TRUE}}
value = true;
}
bool value;
};
void test() {
// PR13717 - Don't crash when a CXXTemporaryObjectExpr is inlined.
if (BoolWrapper().value)
return;
}
}
namespace ConstructorUsedAsRValue {
using TemporaryConstructor::BoolWrapper;
bool extractValue(BoolWrapper b) {
return b.value;
}
void test() {
bool result = extractValue(BoolWrapper());
clang_analyzer_eval(result); // expected-warning{{TRUE}}
}
}
namespace PODUninitialized {
class POD {
public:
int x, y;
};
class PODWrapper {
public:
POD p;
};
class NonPOD {
public:
int x, y;
NonPOD() {}
NonPOD(const NonPOD &Other)
: x(Other.x), y(Other.y) // expected-warning {{undefined}}
{
}
NonPOD(NonPOD &&Other)
: x(Other.x), y(Other.y) // expected-warning {{undefined}}
{
}
NonPOD &operator=(const NonPOD &Other)
{
x = Other.x;
y = Other.y; // expected-warning {{undefined}}
return *this;
}
NonPOD &operator=(NonPOD &&Other)
{
x = Other.x;
y = Other.y; // expected-warning {{undefined}}
return *this;
}
};
class NonPODWrapper {
public:
class Inner {
public:
int x, y;
Inner() {}
Inner(const Inner &Other)
: x(Other.x), y(Other.y) // expected-warning {{undefined}}
{
}
Inner(Inner &&Other)
: x(Other.x), y(Other.y) // expected-warning {{undefined}}
{
}
Inner &operator=(const Inner &Other)
{
x = Other.x; // expected-warning {{undefined}}
y = Other.y;
return *this;
}
Inner &operator=(Inner &&Other)
{
x = Other.x; // expected-warning {{undefined}}
y = Other.y;
return *this;
}
};
Inner p;
};
void testPOD(const POD &pp) {
POD p;
p.x = 1;
POD p2 = p; // no-warning
clang_analyzer_eval(p2.x == 1); // expected-warning{{TRUE}}
POD p3 = move(p); // no-warning
clang_analyzer_eval(p3.x == 1); // expected-warning{{TRUE}}
// Use rvalues as well.
clang_analyzer_eval(POD(p3).x == 1); // expected-warning{{TRUE}}
// Copy from symbolic references correctly.
POD p4 = pp;
// Make sure that p4.x contains a symbol after copy.
if (p4.x > 0)
clang_analyzer_eval(p4.x > 0); // expected-warning{{TRUE}}
// FIXME: Element region gets in the way, so these aren't the same symbols
// as they should be.
clang_analyzer_eval(pp.x == p4.x); // expected-warning{{UNKNOWN}}
PODWrapper w;
w.p.y = 1;
PODWrapper w2 = w; // no-warning
clang_analyzer_eval(w2.p.y == 1); // expected-warning{{TRUE}}
PODWrapper w3 = move(w); // no-warning
clang_analyzer_eval(w3.p.y == 1); // expected-warning{{TRUE}}
// Use rvalues as well.
clang_analyzer_eval(PODWrapper(w3).p.y == 1); // expected-warning{{TRUE}}
}
void testNonPOD() {
NonPOD p;
p.x = 1;
NonPOD p2 = p;
}
void testNonPODMove() {
NonPOD p;
p.x = 1;
NonPOD p2 = move(p);
}
void testNonPODWrapper() {
NonPODWrapper w;
w.p.y = 1;
NonPODWrapper w2 = w;
}
void testNonPODWrapperMove() {
NonPODWrapper w;
w.p.y = 1;
NonPODWrapper w2 = move(w);
}
// Not strictly about constructors, but trivial assignment operators should
// essentially work the same way.
namespace AssignmentOperator {
void testPOD() {
POD p;
p.x = 1;
POD p2;
p2 = p; // no-warning
clang_analyzer_eval(p2.x == 1); // expected-warning{{TRUE}}
POD p3;
p3 = move(p); // no-warning
clang_analyzer_eval(p3.x == 1); // expected-warning{{TRUE}}
PODWrapper w;
w.p.y = 1;
PODWrapper w2;
w2 = w; // no-warning
clang_analyzer_eval(w2.p.y == 1); // expected-warning{{TRUE}}
PODWrapper w3;
w3 = move(w); // no-warning
clang_analyzer_eval(w3.p.y == 1); // expected-warning{{TRUE}}
}
void testReturnValue() {
POD p;
p.x = 1;
POD p2;
clang_analyzer_eval(&(p2 = p) == &p2); // expected-warning{{TRUE}}
PODWrapper w;
w.p.y = 1;
PODWrapper w2;
clang_analyzer_eval(&(w2 = w) == &w2); // expected-warning{{TRUE}}
}
void testNonPOD() {
NonPOD p;
p.x = 1;
NonPOD p2;
p2 = p;
}
void testNonPODMove() {
NonPOD p;
p.x = 1;
NonPOD p2;
p2 = move(p);
}
void testNonPODWrapper() {
NonPODWrapper w;
w.p.y = 1;
NonPODWrapper w2;
w2 = w;
}
void testNonPODWrapperMove() {
NonPODWrapper w;
w.p.y = 1;
NonPODWrapper w2;
w2 = move(w);
}
}
}
namespace ArrayMembers {
struct Primitive {
int values[3];
};
void testPrimitive() {
Primitive a = { { 1, 2, 3 } };
clang_analyzer_eval(a.values[0] == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(a.values[1] == 2); // expected-warning{{TRUE}}
clang_analyzer_eval(a.values[2] == 3); // expected-warning{{TRUE}}
Primitive b = a;
clang_analyzer_eval(b.values[0] == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(b.values[1] == 2); // expected-warning{{TRUE}}
clang_analyzer_eval(b.values[2] == 3); // expected-warning{{TRUE}}
Primitive c;
c = b;
clang_analyzer_eval(c.values[0] == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(c.values[1] == 2); // expected-warning{{TRUE}}
clang_analyzer_eval(c.values[2] == 3); // expected-warning{{TRUE}}
}
struct NestedPrimitive {
int values[2][3];
};
void testNestedPrimitive() {
NestedPrimitive a = { { { 0, 0, 0 }, { 1, 2, 3 } } };
clang_analyzer_eval(a.values[1][0] == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(a.values[1][1] == 2); // expected-warning{{TRUE}}
clang_analyzer_eval(a.values[1][2] == 3); // expected-warning{{TRUE}}
NestedPrimitive b = a;
clang_analyzer_eval(b.values[1][0] == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(b.values[1][1] == 2); // expected-warning{{TRUE}}
clang_analyzer_eval(b.values[1][2] == 3); // expected-warning{{TRUE}}
NestedPrimitive c;
c = b;
clang_analyzer_eval(c.values[1][0] == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(c.values[1][1] == 2); // expected-warning{{TRUE}}
clang_analyzer_eval(c.values[1][2] == 3); // expected-warning{{TRUE}}
}
struct POD {
IntWrapper values[3];
};
void testPOD() {
POD a = { { { 1 }, { 2 }, { 3 } } };
clang_analyzer_eval(a.values[0].x == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(a.values[1].x == 2); // expected-warning{{TRUE}}
clang_analyzer_eval(a.values[2].x == 3); // expected-warning{{TRUE}}
POD b = a;
clang_analyzer_eval(b.values[0].x == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(b.values[1].x == 2); // expected-warning{{TRUE}}
clang_analyzer_eval(b.values[2].x == 3); // expected-warning{{TRUE}}
POD c;
c = b;
clang_analyzer_eval(c.values[0].x == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(c.values[1].x == 2); // expected-warning{{TRUE}}
clang_analyzer_eval(c.values[2].x == 3); // expected-warning{{TRUE}}
}
struct NestedPOD {
IntWrapper values[2][3];
};
void testNestedPOD() {
NestedPOD a = { { { { 0 }, { 0 }, { 0 } }, { { 1 }, { 2 }, { 3 } } } };
clang_analyzer_eval(a.values[1][0].x == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(a.values[1][1].x == 2); // expected-warning{{TRUE}}
clang_analyzer_eval(a.values[1][2].x == 3); // expected-warning{{TRUE}}
NestedPOD b = a;
clang_analyzer_eval(b.values[1][0].x == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(b.values[1][1].x == 2); // expected-warning{{TRUE}}
clang_analyzer_eval(b.values[1][2].x == 3); // expected-warning{{TRUE}}
NestedPOD c;
c = b;
clang_analyzer_eval(c.values[1][0].x == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(c.values[1][1].x == 2); // expected-warning{{TRUE}}
clang_analyzer_eval(c.values[1][2].x == 3); // expected-warning{{TRUE}}
}
struct NonPOD {
NonPODIntWrapper values[3];
};
void testNonPOD() {
NonPOD a;
a.values[0].x = 1;
a.values[1].x = 2;
a.values[2].x = 3;
clang_analyzer_eval(a.values[0].x == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(a.values[1].x == 2); // expected-warning{{TRUE}}
clang_analyzer_eval(a.values[2].x == 3); // expected-warning{{TRUE}}
NonPOD b = a;
clang_analyzer_eval(b.values[0].x == 1); // expected-warning{{UNKNOWN}}
clang_analyzer_eval(b.values[1].x == 2); // expected-warning{{UNKNOWN}}
clang_analyzer_eval(b.values[2].x == 3); // expected-warning{{UNKNOWN}}
NonPOD c;
c = b;
clang_analyzer_eval(c.values[0].x == 1); // expected-warning{{UNKNOWN}}
clang_analyzer_eval(c.values[1].x == 2); // expected-warning{{UNKNOWN}}
clang_analyzer_eval(c.values[2].x == 3); // expected-warning{{UNKNOWN}}
}
struct NestedNonPOD {
NonPODIntWrapper values[2][3];
};
void testNestedNonPOD() {
NestedNonPOD a;
a.values[0][0].x = 0;
a.values[0][1].x = 0;
a.values[0][2].x = 0;
a.values[1][0].x = 1;
a.values[1][1].x = 2;
a.values[1][2].x = 3;
clang_analyzer_eval(a.values[1][0].x == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(a.values[1][1].x == 2); // expected-warning{{TRUE}}
clang_analyzer_eval(a.values[1][2].x == 3); // expected-warning{{TRUE}}
NestedNonPOD b = a;
clang_analyzer_eval(b.values[1][0].x == 1); // expected-warning{{UNKNOWN}}
clang_analyzer_eval(b.values[1][1].x == 2); // expected-warning{{UNKNOWN}}
clang_analyzer_eval(b.values[1][2].x == 3); // expected-warning{{UNKNOWN}}
NestedNonPOD c;
c = b;
clang_analyzer_eval(c.values[1][0].x == 1); // expected-warning{{UNKNOWN}}
clang_analyzer_eval(c.values[1][1].x == 2); // expected-warning{{UNKNOWN}}
clang_analyzer_eval(c.values[1][2].x == 3); // expected-warning{{UNKNOWN}}
}
struct NonPODDefaulted {
NonPODIntWrapper values[3];
NonPODDefaulted() = default;
NonPODDefaulted(const NonPODDefaulted &) = default;
NonPODDefaulted &operator=(const NonPODDefaulted &) = default;
};
void testNonPODDefaulted() {
NonPODDefaulted a;
a.values[0].x = 1;
a.values[1].x = 2;
a.values[2].x = 3;
clang_analyzer_eval(a.values[0].x == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(a.values[1].x == 2); // expected-warning{{TRUE}}
clang_analyzer_eval(a.values[2].x == 3); // expected-warning{{TRUE}}
NonPODDefaulted b = a;
clang_analyzer_eval(b.values[0].x == 1); // expected-warning{{UNKNOWN}}
clang_analyzer_eval(b.values[1].x == 2); // expected-warning{{UNKNOWN}}
clang_analyzer_eval(b.values[2].x == 3); // expected-warning{{UNKNOWN}}
NonPODDefaulted c;
c = b;
clang_analyzer_eval(c.values[0].x == 1); // expected-warning{{UNKNOWN}}
clang_analyzer_eval(c.values[1].x == 2); // expected-warning{{UNKNOWN}}
clang_analyzer_eval(c.values[2].x == 3); // expected-warning{{UNKNOWN}}
}
};
namespace VirtualInheritance {
int counter;
struct base {
base() {
++counter;
}
};
struct virtual_subclass : public virtual base {
virtual_subclass() {}
};
struct double_subclass : public virtual_subclass {
double_subclass() {}
};
void test() {
counter = 0;
double_subclass obj;
clang_analyzer_eval(counter == 1); // expected-warning{{TRUE}}
}
struct double_virtual_subclass : public virtual virtual_subclass {
double_virtual_subclass() {}
};
void testVirtual() {
counter = 0;
double_virtual_subclass obj;
clang_analyzer_eval(counter == 1); // expected-warning{{TRUE}}
}
}
namespace ZeroInitialization {
struct raw_pair {
int p1;
int p2;
};
void testVarDecl() {
raw_pair p{};
clang_analyzer_eval(p.p1 == 0); // expected-warning{{TRUE}}
clang_analyzer_eval(p.p2 == 0); // expected-warning{{TRUE}}
}
void testTemporary() {
clang_analyzer_eval(raw_pair().p1 == 0); // expected-warning{{TRUE}}
clang_analyzer_eval(raw_pair().p2 == 0); // expected-warning{{TRUE}}
}
void testArray() {
raw_pair p[2] = {};
clang_analyzer_eval(p[0].p1 == 0); // expected-warning{{TRUE}}
clang_analyzer_eval(p[0].p2 == 0); // expected-warning{{TRUE}}
clang_analyzer_eval(p[1].p1 == 0); // expected-warning{{TRUE}}
clang_analyzer_eval(p[1].p2 == 0); // expected-warning{{TRUE}}
}
void testNew() {
raw_pair *pp = new raw_pair();
clang_analyzer_eval(pp->p1 == 0); // expected-warning{{TRUE}}
clang_analyzer_eval(pp->p2 == 0); // expected-warning{{TRUE}}
}
void testArrayNew() {
// FIXME: Pending proper implementation of constructors for 'new[]'.
raw_pair *p = new raw_pair[2]();
clang_analyzer_eval(p[0].p1 == 0); // expected-warning{{UNKNOWN}}
clang_analyzer_eval(p[0].p2 == 0); // expected-warning{{UNKNOWN}}
clang_analyzer_eval(p[1].p1 == 0); // expected-warning{{UNKNOWN}}
clang_analyzer_eval(p[1].p2 == 0); // expected-warning{{UNKNOWN}}
}
struct initializing_pair {
public:
int x;
raw_pair y;
initializing_pair() : x(), y() {}
};
void testFieldInitializers() {
initializing_pair p;
clang_analyzer_eval(p.x == 0); // expected-warning{{TRUE}}
clang_analyzer_eval(p.y.p1 == 0); // expected-warning{{TRUE}}
clang_analyzer_eval(p.y.p2 == 0); // expected-warning{{TRUE}}
}
struct subclass : public raw_pair {
subclass() = default;
};
void testSubclass() {
subclass p;
clang_analyzer_eval(p.p1 == 0); // expected-warning{{garbage}}
}
struct initializing_subclass : public raw_pair {
initializing_subclass() : raw_pair() {}
};
void testInitializingSubclass() {
initializing_subclass p;
clang_analyzer_eval(p.p1 == 0); // expected-warning{{TRUE}}
clang_analyzer_eval(p.p2 == 0); // expected-warning{{TRUE}}
}
struct pair_wrapper {
pair_wrapper() : p() {}
raw_pair p;
};
struct virtual_subclass : public virtual pair_wrapper {
virtual_subclass() {}
};
struct double_virtual_subclass : public virtual_subclass {
double_virtual_subclass() {
// This previously caused a crash because the pair_wrapper subobject was
// initialized twice.
}
};
class Empty {
public:
static int glob;
Empty(); // No body.
Empty(int x); // Body below.
};
class PairContainer : public Empty {
public:
raw_pair p;
int q;
PairContainer() : Empty(), p() {
// This previously caused a crash because the empty base class looked
// like an initialization of 'p'.
}
PairContainer(int) : Empty(), p() {
// Test inlining something else here.
}
PairContainer(double): Empty(1), p() {
clang_analyzer_eval(p.p1 == 0); // expected-warning{{TRUE}}
clang_analyzer_eval(p.p2 == 0); // expected-warning{{TRUE}}
clang_analyzer_eval(q == 1); // expected-warning{{TRUE}}
// This one's indeed UNKNOWN. Definitely not TRUE.
clang_analyzer_eval(p.p2 == glob); // expected-warning{{UNKNOWN}}
}
};
Empty::Empty(int x) {
static_cast<PairContainer *>(this)->p.p1 = x;
static_cast<PairContainer *>(this)->q = x;
// Our static member will store the old garbage values of fields that aren't
// yet initialized. It's not certainly garbage though (i.e. the constructor
// could have been called on an initialized piece of memory), so no
// uninitialized value warning here, and it should be a symbol, not
// undefined value, for later comparison.
glob = static_cast<PairContainer *>(this)->p.p2;
}
class Empty2 {
public:
static int glob_p1, glob_p2;
Empty2(); // Body below.
};
class PairDoubleEmptyContainer: public Empty, public Empty2 {
public:
raw_pair p;
PairDoubleEmptyContainer(): Empty(), Empty2(), p() {
clang_analyzer_eval(p.p1 == 0); // expected-warning{{TRUE}}
clang_analyzer_eval(p.p2 == 0); // expected-warning{{TRUE}}
// This is indeed UNKNOWN.
clang_analyzer_eval(p.p1 == glob_p1); // expected-warning{{UNKNOWN}}
clang_analyzer_eval(p.p2 == glob_p2); // expected-warning{{UNKNOWN}}
}
};
Empty2::Empty2() {
glob_p1 = static_cast<PairDoubleEmptyContainer *>(this)->p.p1;
glob_p2 = static_cast<PairDoubleEmptyContainer *>(this)->p.p2;
}
class PairContainerContainer {
int padding;
PairContainer pc;
public:
PairContainerContainer() : pc(1) {}
};
}
namespace InitializerList {
struct List {
bool usedInitializerList;
List() : usedInitializerList(false) {}
List(std::initializer_list<int>) : usedInitializerList(true) {}
};
void testStatic() {
List defaultCtor;
clang_analyzer_eval(!defaultCtor.usedInitializerList); // expected-warning{{TRUE}}
List list{1, 2};
clang_analyzer_eval(list.usedInitializerList); // expected-warning{{TRUE}}
}
void testDynamic() {
List *list = new List{1, 2};
clang_analyzer_eval(list->usedInitializerList); // expected-warning{{TRUE}}
}
}
namespace PR19579 {
class C {};
void f() {
C();
int a;
extern void use(int);
use(a); // expected-warning{{uninitialized}}
}
void g() {
struct S {
C c;
int i;
};
// This order triggers the initialization of the inner "a" after the
// constructor for "C" is run, which used to confuse the analyzer
// (is "C()" the initialization of "a"?).
struct S s = {
C(),
({
int a, b = 0;
0;
})
};
}
}
namespace NoCrashOnEmptyBaseOptimization {
struct NonEmptyBase {
int X;
explicit NonEmptyBase(int X) : X(X) {}
};
struct EmptyBase {};
struct S : NonEmptyBase, EmptyBase {
S() : NonEmptyBase(0), EmptyBase() {}
};
void testSCtorNoCrash() {
S s;
}
}
namespace EmptyBaseAssign {
struct B1 {};
struct B2 { int x; };
struct D: public B1, public B2 {
const D &operator=(const D &d) {
*((B2 *)this) = d;
*((B1 *)this) = d;
return *this;
}
};
void test() {
D d1;
d1.x = 1;
D d2;
d2 = d1;
clang_analyzer_eval(d2.x == 1); // expected-warning{{TRUE}}
}
}
namespace vbase_zero_init {
class A {
virtual void foo();
};
class B {
virtual void bar();
public:
static int glob_y, glob_z, glob_w;
int x;
B(); // Body below.
};
class C : virtual public A {
public:
int y;
};
class D : public B, public C {
public:
// 'z', unlike 'w', resides in an area that would have been within padding of
// base class 'C' if it wasn't part of 'D', but only on 64-bit systems.
int z, w;
// Initialization order: A(), B(), C().
D() : A(), C() {
clang_analyzer_eval(x == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(y == 0); // expected-warning{{TRUE}}
#ifdef I386
clang_analyzer_eval(z == 3); // expected-warning{{TRUE}}
#else
// FIXME: Should be TRUE. Initialized in B().
clang_analyzer_eval(z == 3); // expected-warning{{UNKNOWN}}
#endif
clang_analyzer_eval(w == 4); // expected-warning{{TRUE}}
// FIXME: Should be UNKNOWN. Changed in B() since glob_y was assigned.
clang_analyzer_eval(y == glob_y); // expected-warning{{TRUE}}
#ifdef I386
clang_analyzer_eval(z == glob_z); // expected-warning{{UNKNOWN}}
#else
// FIXME: Should be UNKNOWN. Changed in B() since glob_z was assigned.
clang_analyzer_eval(z == glob_z); // expected-warning{{TRUE}}
#endif
clang_analyzer_eval(w == glob_w); // expected-warning{{UNKNOWN}}
} // no-crash
};
B::B() : x(1) {
// Our static members will store the old garbage values of fields that aren't
// yet initialized. These aren't certainly garbage though (i.e. the
// constructor could have been called on an initialized piece of memory),
// so no uninitialized value warning here, and these should be symbols, not
// undefined values, for later comparison.
glob_y = static_cast<D *>(this)->y;
glob_z = static_cast<D *>(this)->z;
glob_w = static_cast<D *>(this)->w;
static_cast<D *>(this)->y = 2;
static_cast<D *>(this)->z = 3;
static_cast<D *>(this)->w = 4;
}
}
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