f9e0fa8ba4
By completely omitting invalidation in the case of InstanceCall, we do not clear the moved state of the fields of the this object after an opaque call to a member function of the object itself.
52 lines
1.9 KiB
C++
52 lines
1.9 KiB
C++
// RUN: %clang_analyze_cc1 -analyzer-checker=cplusplus.Move %s -std=c++11\
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// RUN: -analyzer-output=text
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#include "Inputs/system-header-simulator-cxx.h"
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class C {
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int n;
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public:
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void memberFun();
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};
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template <class... Ts> void opaqueFreeFun(Ts...);
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class Foo {
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std::unique_ptr<C> up;
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void opaqueMemberFun();
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void testOpaqueMemberFun() {
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auto tmp = std::move(up);
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opaqueMemberFun(); // clears region state
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(void)up->memberFun(); // no-warning
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}
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void testOpaqueFreeFun() {
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auto tmp = std::move(up); // expected-note{{Smart pointer 'up' of type 'std::unique_ptr' is reset to null when moved from}}
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opaqueFreeFun(); // does not clear region state
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(void)up->memberFun(); // expected-warning{{Dereference of null smart pointer 'up' of type 'std::unique_ptr'}}
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// expected-note@-1{{Dereference of null smart pointer 'up' of type 'std::unique_ptr'}}
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}
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};
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void testInstanceMemberFun(C c) {
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auto tmp1 = std::move(c); // expected-note{{Object 'c' is moved}}
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auto tmp2 = std::move(c); // expected-warning{{Moved-from object 'c' is moved}}
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// expected-note@-1{{Moved-from object 'c' is moved}}
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auto tmp3 = std::move(c);
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c.memberFun(); // does not clear region state
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auto tmp4 = std::move(c);
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auto tmp5 = std::move(c); // no-warning
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}
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void testPassByRef(C c) {
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auto tmp1 = std::move(c); // expected-note{{Object 'c' is moved}}
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auto tmp2 = std::move(c); // expected-warning{{Moved-from object 'c' is moved}}
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// expected-note@-1{{Moved-from object 'c' is moved}}
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auto tmp3 = std::move(c);
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opaqueFreeFun<C&>(c); // clears region state
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auto tmp4 = std::move(c); // expected-note{{Object 'c' is moved}}
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auto tmp5 = std::move(c); // expected-warning{{Moved-from object 'c' is moved}}
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// expected-note@-1{{Moved-from object 'c' is moved}}
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}
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