3f648992bf
…tExpr If the ImplicitValueInitExpr is of incomplete array type, we ignore it in its Visit function. This is a special case here, so pull out the element type and zero the elements.
35 lines
1.1 KiB
C++
35 lines
1.1 KiB
C++
// RUN: %clang_cc1 -std=c++2c -fexperimental-new-constant-interpreter -verify=expected,both %s
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// RUN: %clang_cc1 -std=c++2c -verify=ref,both %s
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/// This used to cause problems because the heap-allocated array
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/// is initialized by an ImplicitValueInitExpr of incomplete array type.
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inline namespace {
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template < class _Tp >
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using __add_lvalue_reference_t = __add_lvalue_reference(_Tp);
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template < class _Tp > using __remove_extent_t = __remove_extent(_Tp);
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}
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inline namespace {
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template < class > class unique_ptr;
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template < class _Tp > struct unique_ptr< _Tp[] > {
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_Tp *__ptr_;
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template <
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class _Tag, class _Ptr>
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constexpr unique_ptr(_Tag, _Ptr __ptr, unsigned) : __ptr_(__ptr){}
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constexpr ~unique_ptr() { delete[] __ptr_; }
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constexpr __add_lvalue_reference_t< _Tp >
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operator[](decltype(sizeof(int)) __i) {
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return __ptr_[__i];
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}};
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constexpr unique_ptr< int[] > make_unique(decltype(sizeof(int)) __n) {
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return unique_ptr< int[] >(int(), new __remove_extent_t< int>[__n](), __n);
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}}
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constexpr bool test() {
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auto p1 = make_unique(5);
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(p1[0] == 0); // both-warning {{expression result unused}}
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return true;
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}
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static_assert(test());
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