40 lines
998 B
C++
40 lines
998 B
C++
// RUN: %clang_analyze_cc1 -std=c++14 -analyzer-checker=optin.osx.OSObjectCStyleCast %s -verify
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#include "os_object_base.h"
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struct OSArray : public OSObject {
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unsigned getCount();
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};
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struct A {
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int x;
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};
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struct B : public A {
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unsigned getCount();
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};
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unsigned warn_on_explicit_downcast(OSObject * obj) {
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OSArray *a = (OSArray *) obj; // expected-warning{{C-style cast of an OSObject is prone to type confusion attacks; use 'OSRequiredCast' if the object is definitely of type 'OSArray', or 'OSDynamicCast' followed by a null check if unsure}}
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return a->getCount();
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}
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void no_warn_on_upcast(OSArray *arr) {
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OSObject *obj = (OSObject *) arr;
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obj->retain();
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obj->release();
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}
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unsigned no_warn_on_dynamic_cast(OSObject *obj) {
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OSArray *a = OSDynamicCast(OSArray, obj);
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return a->getCount();
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}
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__SIZE_TYPE__ no_warn_on_primitive_conversion(OSArray *arr) {
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return (__SIZE_TYPE__) arr;
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}
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unsigned no_warn_on_other_type_cast(A *a) {
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B *b = (B *) a;
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return b->getCount();
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}
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