49f1751522
Since a temporary object lives until the end of the statement, it's safe to pass such an object as a function argument without explicitly creating a CheckedRef/CheckedPtr in stack.
40 lines
948 B
C++
40 lines
948 B
C++
// RUN: %clang_analyze_cc1 -analyzer-checker=alpha.webkit.UncheckedCallArgsChecker -verify %s
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void WTFCrash(void);
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enum class Tag : bool { Value };
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template <typename StorageType, Tag> class CanMakeCheckedPtrBase {
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public:
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void incrementCheckedPtrCount() const { ++m_checkedPtrCount; }
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inline void decrementCheckedPtrCount() const
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{
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if (!m_checkedPtrCount)
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WTFCrash();
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--m_checkedPtrCount;
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}
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private:
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mutable StorageType m_checkedPtrCount { 0 };
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};
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template<typename T, Tag tag>
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class CanMakeCheckedPtr : public CanMakeCheckedPtrBase<unsigned int, tag> {
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};
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class CheckedObject : public CanMakeCheckedPtr<CheckedObject, Tag::Value> {
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public:
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void doWork();
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};
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CheckedObject* provide();
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void foo() {
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provide()->doWork();
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// expected-warning@-1{{Call argument for 'this' parameter is unchecked and unsafe}}
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}
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void doWorkWithObject(const CheckedObject&);
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void bar() {
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doWorkWithObject(CheckedObject());
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}
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