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Diffstat (limited to 'libcxx/test/std/containers/sequences/vector.bool/ctor_exceptions.pass.cpp')
-rw-r--r-- | libcxx/test/std/containers/sequences/vector.bool/ctor_exceptions.pass.cpp | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/libcxx/test/std/containers/sequences/vector.bool/ctor_exceptions.pass.cpp b/libcxx/test/std/containers/sequences/vector.bool/ctor_exceptions.pass.cpp new file mode 100644 index 000000000000..592d733de42d --- /dev/null +++ b/libcxx/test/std/containers/sequences/vector.bool/ctor_exceptions.pass.cpp @@ -0,0 +1,141 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +// UNSUPPORTED: no-exceptions + +// (bug report: https://llvm.org/PR58392) +// Check that vector<bool> constructors don't leak memory when an operation inside the constructor throws an exception + +#include <type_traits> +#include <vector> + +#include "count_new.h" +#include "test_iterators.h" + +template <class T> +struct Allocator { + using value_type = T; + using is_always_equal = std::false_type; + + template <class U> + Allocator(const Allocator<U>&) {} + + Allocator(bool should_throw = true) { + if (should_throw) + throw 0; + } + + T* allocate(int n) { return std::allocator<T>().allocate(n); } + void deallocate(T* ptr, int n) { std::allocator<T>().deallocate(ptr, n); } + + friend bool operator==(const Allocator&, const Allocator&) { return false; } +}; + +template <class IterCat> +struct Iterator { + using iterator_category = IterCat; + using difference_type = std::ptrdiff_t; + using value_type = bool; + using reference = bool&; + using pointer = bool*; + + int i_; + bool b_ = true; + Iterator(int i = 0) : i_(i) {} + bool& operator*() { + if (i_ == 1) + throw 1; + return b_; + } + + friend bool operator==(const Iterator& lhs, const Iterator& rhs) { return lhs.i_ == rhs.i_; } + + friend bool operator!=(const Iterator& lhs, const Iterator& rhs) { return lhs.i_ != rhs.i_; } + + Iterator& operator++() { + ++i_; + return *this; + } + + Iterator operator++(int) { + auto tmp = *this; + ++i_; + return tmp; + } +}; + +void check_new_delete_called() { + assert(globalMemCounter.new_called == globalMemCounter.delete_called); + assert(globalMemCounter.new_array_called == globalMemCounter.delete_array_called); + assert(globalMemCounter.aligned_new_called == globalMemCounter.aligned_delete_called); + assert(globalMemCounter.aligned_new_array_called == globalMemCounter.aligned_delete_array_called); +} + +int main(int, char**) { + using AllocVec = std::vector<bool, Allocator<bool> >; + +#if TEST_STD_VER >= 14 + try { // Throw in vector(size_type, const allocator_type&) from allocator + Allocator<bool> alloc(false); + AllocVec get_alloc(0, alloc); + } catch (int) { + } + check_new_delete_called(); +#endif // TEST_STD_VER >= 14 + + try { // Throw in vector(InputIterator, InputIterator) from input iterator + std::vector<bool> vec((Iterator<std::input_iterator_tag>()), Iterator<std::input_iterator_tag>(2)); + } catch (int) { + } + check_new_delete_called(); + + try { // Throw in vector(InputIterator, InputIterator) from forward iterator + std::vector<bool> vec((Iterator<std::forward_iterator_tag>()), Iterator<std::forward_iterator_tag>(2)); + } catch (int) { + } + check_new_delete_called(); + + try { // Throw in vector(InputIterator, InputIterator) from allocator + int a[] = {1, 2}; + AllocVec vec(cpp17_input_iterator<int*>(a), cpp17_input_iterator<int*>(a + 2)); + } catch (int) { + } + check_new_delete_called(); + + try { // Throw in vector(InputIterator, InputIterator, const allocator_type&) from input iterator + std::allocator<bool> alloc; + std::vector<bool> vec(Iterator<std::input_iterator_tag>(), Iterator<std::input_iterator_tag>(2), alloc); + } catch (int) { + } + check_new_delete_called(); + + try { // Throw in vector(InputIterator, InputIterator, const allocator_type&) from forward iterator + std::allocator<bool> alloc; + std::vector<bool> vec(Iterator<std::forward_iterator_tag>(), Iterator<std::forward_iterator_tag>(2), alloc); + } catch (int) { + } + check_new_delete_called(); + + try { // Throw in vector(InputIterator, InputIterator, const allocator_type&) from allocator + bool a[] = {true, false}; + Allocator<bool> alloc(false); + AllocVec vec(cpp17_input_iterator<bool*>(a), cpp17_input_iterator<bool*>(a + 2), alloc); + } catch (int) { + } + check_new_delete_called(); + + try { // Throw in vector(InputIterator, InputIterator, const allocator_type&) from allocator + bool a[] = {true, false}; + Allocator<bool> alloc(false); + AllocVec vec(forward_iterator<bool*>(a), forward_iterator<bool*>(a + 2), alloc); + } catch (int) { + } + check_new_delete_called(); + + return 0; +} |