83 lines
2.1 KiB
C++
83 lines
2.1 KiB
C++
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// RUN: %clang_cc1 -analyze -analyzer-checker=core,debug.ExprInspection -verify %s
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void clang_analyzer_eval(bool);
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struct A {
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// This conversion operator allows implicit conversion to bool but not to other integer types.
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typedef A * (A::*MemberPointer);
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operator MemberPointer() const { return m_ptr ? &A::m_ptr : 0; }
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A *m_ptr;
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A *getPtr();
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typedef A * (A::*MemberFnPointer)(void);
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};
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void testConditionalUse() {
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A obj;
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obj.m_ptr = &obj;
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clang_analyzer_eval(obj.m_ptr); // expected-warning{{TRUE}}
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clang_analyzer_eval(&A::m_ptr); // expected-warning{{TRUE}}
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clang_analyzer_eval(obj); // expected-warning{{TRUE}}
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obj.m_ptr = 0;
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clang_analyzer_eval(obj.m_ptr); // expected-warning{{FALSE}}
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clang_analyzer_eval(A::MemberPointer(0)); // expected-warning{{FALSE}}
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clang_analyzer_eval(obj); // expected-warning{{FALSE}}
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clang_analyzer_eval(&A::getPtr); // expected-warning{{TRUE}}
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clang_analyzer_eval(A::MemberFnPointer(0)); // expected-warning{{FALSE}}
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}
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void testComparison() {
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clang_analyzer_eval(&A::getPtr == &A::getPtr); // expected-warning{{TRUE}}
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clang_analyzer_eval(&A::getPtr == 0); // expected-warning{{FALSE}}
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// FIXME: Should be TRUE.
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clang_analyzer_eval(&A::m_ptr == &A::m_ptr); // expected-warning{{UNKNOWN}}
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}
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namespace PR15742 {
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template <class _T1, class _T2> struct A {
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A (const _T1 &, const _T2 &);
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};
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typedef void *NPIdentifier;
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template <class T> class B {
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public:
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typedef A<NPIdentifier, bool (T::*) (const NPIdentifier *, unsigned,
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NPIdentifier *)> MethodMapMember;
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};
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class C : public B<C> {
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public:
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bool Find(const NPIdentifier *, unsigned, NPIdentifier *);
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};
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void InitStaticData () {
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C::MethodMapMember(0, &C::Find); // don't crash
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}
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}
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// ---------------
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// FALSE NEGATIVES
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// ---------------
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bool testDereferencing() {
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A obj;
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obj.m_ptr = 0;
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A::MemberPointer member = &A::m_ptr;
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// FIXME: Should be TRUE.
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clang_analyzer_eval(obj.*member == 0); // expected-warning{{UNKNOWN}}
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member = 0;
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// FIXME: Should emit a null dereference.
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return obj.*member; // no-warning
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}
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