b756c82bfa
The original commit assumes that `CXXConstructExpr->getType()->getAsRecordDecl()` is always a `CXXRecordDecl` but it is not true for ObjC programs. This relanding changes `cast<CXXRecordDecl>(CXXConstructExpr->getType()->getAsRecordDecl())` to `dyn_cast_or_null<CXXRecordDecl>(CXXConstructExpr->getType()->getAsRecordDecl())` This reverts commit 9048c2d4f239cb47fed17cb150e2bbf3934454c2. rdar://146753089
51 lines
1.3 KiB
C++
51 lines
1.3 KiB
C++
// RUN: %clang_analyze_cc1 -analyzer-checker=cplusplus -verify %s
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// RUN: %clang_analyze_cc1 -analyzer-checker=cplusplus -verify %s -DEMPTY_CLASS
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// UNSUPPORTED: system-windows
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// expected-no-diagnostics
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// This test reproduces the issue that previously the static analyzer
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// initialized an [[no_unique_address]] empty field to zero,
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// over-writing a non-empty field with the same offset.
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namespace std {
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#ifdef EMPTY_CLASS
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struct default_delete {};
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template <class _Tp, class _Dp = default_delete >
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#else
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// Class with methods and static members is still empty:
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template <typename T>
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class default_delete {
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T dump();
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static T x;
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};
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template <class _Tp, class _Dp = default_delete<_Tp> >
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#endif
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class unique_ptr {
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[[no_unique_address]] _Tp * __ptr_;
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[[no_unique_address]] _Dp __deleter_;
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public:
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explicit unique_ptr(_Tp* __p) noexcept
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: __ptr_(__p),
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__deleter_() {}
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~unique_ptr() {
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delete __ptr_;
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}
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};
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}
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struct X {};
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int main()
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{
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// Previously a leak falsely reported here. It was because the
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// Static Analyzer engine simulated the initialization of
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// `__deleter__` incorrectly. The engine assigned zero to
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// `__deleter__`--an empty record sharing offset with `__ptr__`.
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// The assignment over wrote `__ptr__`.
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std::unique_ptr<X> a(new X());
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return 0;
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}
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