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// RUN: %clang_analyze_cc1 -analyzer-checker=alpha.webkit.UncountedLocalVarsChecker -verify %s
#include "mock-types.h"
void someFunction();
namespace raw_ptr {
void foo() {
RefCountable *bar;
// FIXME: later on we might warn on uninitialized vars too
}
void bar(RefCountable *) {}
} // namespace raw_ptr
namespace reference {
void foo_ref() {
RefCountable automatic;
RefCountable &bar = automatic;
// expected-warning@-1{{Local variable 'bar' is uncounted and unsafe [alpha.webkit.UncountedLocalVarsChecker]}}
someFunction();
bar.method();
}
void foo_ref_trivial() {
RefCountable automatic;
RefCountable &bar = automatic;
}
void bar_ref(RefCountable &) {}
} // namespace reference
namespace guardian_scopes {
void foo1() {
RefPtr<RefCountable> foo;
{ RefCountable *bar = foo.get(); }
}
void foo2() {
RefPtr<RefCountable> foo;
// missing embedded scope here
RefCountable *bar = foo.get();
// expected-warning@-1{{Local variable 'bar' is uncounted and unsafe [alpha.webkit.UncountedLocalVarsChecker]}}
someFunction();
bar->method();
}
void foo3() {
RefPtr<RefCountable> foo;
{
{ RefCountable *bar = foo.get(); }
}
}
void foo4() {
{
RefPtr<RefCountable> foo;
{ RefCountable *bar = foo.get(); }
}
}
void foo5() {
RefPtr<RefCountable> foo;
auto* bar = foo.get();
bar->trivial();
}
void foo6() {
RefPtr<RefCountable> foo;
auto* bar = foo.get();
// expected-warning@-1{{Local variable 'bar' is uncounted and unsafe [alpha.webkit.UncountedLocalVarsChecker]}}
bar->method();
}
struct SelfReferencingStruct {
SelfReferencingStruct* ptr;
RefCountable* obj { nullptr };
};
void foo7(RefCountable* obj) {
SelfReferencingStruct bar = { &bar, obj };
bar.obj->method();
}
} // namespace guardian_scopes
namespace auto_keyword {
class Foo {
RefCountable *provide_ref_ctnbl();
void evil_func() {
RefCountable *bar = provide_ref_ctnbl();
// expected-warning@-1{{Local variable 'bar' is uncounted and unsafe [alpha.webkit.UncountedLocalVarsChecker]}}
auto *baz = provide_ref_ctnbl();
// expected-warning@-1{{Local variable 'baz' is uncounted and unsafe [alpha.webkit.UncountedLocalVarsChecker]}}
auto *baz2 = this->provide_ref_ctnbl();
// expected-warning@-1{{Local variable 'baz2' is uncounted and unsafe [alpha.webkit.UncountedLocalVarsChecker]}}
[[clang::suppress]] auto *baz_suppressed = provide_ref_ctnbl(); // no-warning
}
void func() {
RefCountable *bar = provide_ref_ctnbl();
// expected-warning@-1{{Local variable 'bar' is uncounted and unsafe [alpha.webkit.UncountedLocalVarsChecker]}}
if (bar)
bar->method();
}
};
} // namespace auto_keyword
namespace guardian_casts {
void foo1() {
RefPtr<RefCountable> foo;
{
RefCountable *bar = downcast<RefCountable>(foo.get());
bar->method();
}
foo->method();
}
void foo2() {
RefPtr<RefCountable> foo;
{
RefCountable *bar =
static_cast<RefCountable *>(downcast<RefCountable>(foo.get()));
someFunction();
}
}
} // namespace guardian_casts
namespace guardian_ref_conversion_operator {
void foo() {
Ref<RefCountable> rc;
{
RefCountable &rr = rc;
rr.method();
someFunction();
}
}
} // namespace guardian_ref_conversion_operator
namespace ignore_for_if {
RefCountable *provide_ref_ctnbl() { return nullptr; }
void foo() {
// no warnings
if (RefCountable *a = provide_ref_ctnbl())
a->trivial();
for (RefCountable *b = provide_ref_ctnbl(); b != nullptr;)
b->trivial();
RefCountable *array[1];
for (RefCountable *c : array)
c->trivial();
while (RefCountable *d = provide_ref_ctnbl())
d->trivial();
do {
RefCountable *e = provide_ref_ctnbl();
e->trivial();
} while (1);
someFunction();
}
void bar() {
if (RefCountable *a = provide_ref_ctnbl()) {
// expected-warning@-1{{Local variable 'a' is uncounted and unsafe [alpha.webkit.UncountedLocalVarsChecker]}}
a->method();
}
for (RefCountable *b = provide_ref_ctnbl(); b != nullptr;) {
// expected-warning@-1{{Local variable 'b' is uncounted and unsafe [alpha.webkit.UncountedLocalVarsChecker]}}
b->method();
}
RefCountable *array[1];
for (RefCountable *c : array) {
// expected-warning@-1{{Local variable 'c' is uncounted and unsafe [alpha.webkit.UncountedLocalVarsChecker]}}
c->method();
}
while (RefCountable *d = provide_ref_ctnbl()) {
// expected-warning@-1{{Local variable 'd' is uncounted and unsafe [alpha.webkit.UncountedLocalVarsChecker]}}
d->method();
}
do {
RefCountable *e = provide_ref_ctnbl();
// expected-warning@-1{{Local variable 'e' is uncounted and unsafe [alpha.webkit.UncountedLocalVarsChecker]}}
e->method();
} while (1);
someFunction();
}
} // namespace ignore_for_if
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