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--- xnu/xnu-11215.61.5/tests/bounded_ptr_src/subscript.cpp
+++ /dev/null
@@ -1,252 +0,0 @@
-//
-// Tests for
-// T& operator[](std::ptrdiff_t n) const;
-//
-
-#include <libkern/c++/bounded_ptr.h>
-#include <array>
-#include <cstddef>
-#include <darwintest.h>
-#include <darwintest_utils.h>
-#include "test_utils.h"
-
-#define _assert(...) T_ASSERT_TRUE((__VA_ARGS__), # __VA_ARGS__)
-
-struct T {
- int i;
- friend constexpr bool
- operator==(T const& a, T const& b)
- {
- return a.i == b.i;
- }
-};
-
-namespace {
-struct tracking_policy {
- static bool did_trap;
- static void
- trap(char const*)
- {
- did_trap = true;
- }
-};
-bool tracking_policy::did_trap = false;
-}
-
-template <typename T, typename QualT>
-static void
-tests()
-{
- std::array<T, 5> array = {T{0}, T{1}, T{2}, T{3}, T{4}};
-
- {
- // T{0} T{1} T{2} T{3} T{4} <one-past-last>
- // ^ ^
- // | |
- // begin, ptr end
- test_bounded_ptr<QualT> ptr(array.begin() + 0, array.begin(), array.end());
- QualT& ref0 = ptr[0];
- _assert(&ref0 == &array[0]);
-
- QualT& ref1 = ptr[1];
- _assert(&ref1 == &array[1]);
-
- QualT& ref2 = ptr[2];
- _assert(&ref2 == &array[2]);
-
- QualT& ref3 = ptr[3];
- _assert(&ref3 == &array[3]);
-
- QualT& ref4 = ptr[4];
- _assert(&ref4 == &array[4]);
- }
- {
- // T{0} T{1} T{2} T{3} T{4} <one-past-last>
- // ^ ^ ^
- // | | |
- // begin ptr end
- test_bounded_ptr<QualT> ptr(array.begin() + 1, array.begin(), array.end());
- QualT& ref0 = ptr[-1];
- _assert(&ref0 == &array[0]);
-
- QualT& ref1 = ptr[0];
- _assert(&ref1 == &array[1]);
-
- QualT& ref2 = ptr[1];
- _assert(&ref2 == &array[2]);
-
- QualT& ref3 = ptr[2];
- _assert(&ref3 == &array[3]);
-
- QualT& ref4 = ptr[3];
- _assert(&ref4 == &array[4]);
- }
- {
- // T{0} T{1} T{2} T{3} T{4} <one-past-last>
- // ^ ^ ^
- // | | |
- // begin ptr end
- test_bounded_ptr<QualT> ptr(array.begin() + 2, array.begin(), array.end());
- QualT& ref0 = ptr[-2];
- _assert(&ref0 == &array[0]);
-
- QualT& ref1 = ptr[-1];
- _assert(&ref1 == &array[1]);
-
- QualT& ref2 = ptr[0];
- _assert(&ref2 == &array[2]);
-
- QualT& ref3 = ptr[1];
- _assert(&ref3 == &array[3]);
-
- QualT& ref4 = ptr[2];
- _assert(&ref4 == &array[4]);
- }
- {
- // T{0} T{1} T{2} T{3} T{4} <one-past-last>
- // ^ ^ ^
- // | | |
- // begin ptr end
- test_bounded_ptr<QualT> ptr(array.begin() + 4, array.begin(), array.end());
- QualT& ref0 = ptr[-4];
- _assert(&ref0 == &array[0]);
-
- QualT& ref1 = ptr[-3];
- _assert(&ref1 == &array[1]);
-
- QualT& ref2 = ptr[-2];
- _assert(&ref2 == &array[2]);
-
- QualT& ref3 = ptr[-1];
- _assert(&ref3 == &array[3]);
-
- QualT& ref4 = ptr[0];
- _assert(&ref4 == &array[4]);
- }
- {
- // T{0} T{1} T{2} T{3} T{4} <one-past-last>
- // ^ ^
- // | |
- // begin end,ptr
- test_bounded_ptr<QualT> ptr(array.end(), array.begin(), array.end());
- QualT& ref0 = ptr[-5];
- _assert(&ref0 == &array[0]);
-
- QualT& ref1 = ptr[-4];
- _assert(&ref1 == &array[1]);
-
- QualT& ref2 = ptr[-3];
- _assert(&ref2 == &array[2]);
-
- QualT& ref3 = ptr[-2];
- _assert(&ref3 == &array[3]);
-
- QualT& ref4 = ptr[-1];
- _assert(&ref4 == &array[4]);
- }
-
- // Make sure we trap when we subscript a pointer at an out-of-bounds offset
- {
- // T{0} T{1} T{2} T{3} T{4} <one-past-last>
- // ^ ^ ^
- // | | |
- // begin end ptr
- libkern::bounded_ptr<QualT, tracking_policy> ptr(array.end() - 1, array.begin(), array.end() - 2);
-
- tracking_policy::did_trap = false;
- (void)ptr[-4];
- _assert(!tracking_policy::did_trap);
-
- tracking_policy::did_trap = false;
- (void)ptr[-3];
- _assert(!tracking_policy::did_trap);
-
- tracking_policy::did_trap = false;
- (void)ptr[-2];
- _assert(!tracking_policy::did_trap);
-
- tracking_policy::did_trap = false;
- (void)ptr[-1]; // trap
- _assert(tracking_policy::did_trap);
-
- tracking_policy::did_trap = false;
- (void)ptr[0]; // trap
- _assert(tracking_policy::did_trap);
- }
- {
- // T{0} T{1} T{2} T{3} T{4} <one-past-last>
- // ^ ^ ^
- // | | |
- // begin ptr end
- libkern::bounded_ptr<QualT, tracking_policy> ptr(array.begin() + 1, array.begin(), array.end());
-
- tracking_policy::did_trap = false;
- (void)ptr[-1];
- _assert(!tracking_policy::did_trap);
-
- tracking_policy::did_trap = false;
- (void)ptr[0];
- _assert(!tracking_policy::did_trap);
-
- tracking_policy::did_trap = false;
- (void)ptr[1];
- _assert(!tracking_policy::did_trap);
-
- tracking_policy::did_trap = false;
- (void)ptr[2];
- _assert(!tracking_policy::did_trap);
-
- tracking_policy::did_trap = false;
- (void)ptr[3];
- _assert(!tracking_policy::did_trap);
-
- tracking_policy::did_trap = false;
- (void)ptr[4]; // trap
- _assert(tracking_policy::did_trap);
- }
- {
- // T{0} T{1} T{2} T{3} T{4} <one-past-last>
- // ^ ^ ^
- // | | |
- // ptr begin end
- libkern::bounded_ptr<QualT, tracking_policy> ptr(array.begin(), array.begin() + 1, array.end() - 1);
-
- tracking_policy::did_trap = false;
- (void)ptr[0]; // trap
- _assert(tracking_policy::did_trap);
-
- tracking_policy::did_trap = false;
- (void)ptr[1];
- _assert(!tracking_policy::did_trap);
-
- tracking_policy::did_trap = false;
- (void)ptr[2];
- _assert(!tracking_policy::did_trap);
-
- tracking_policy::did_trap = false;
- (void)ptr[3];
- _assert(!tracking_policy::did_trap);
-
- tracking_policy::did_trap = false;
- (void)ptr[4]; // trap
- _assert(tracking_policy::did_trap);
-
- tracking_policy::did_trap = false;
- (void)ptr[5]; // trap
- _assert(tracking_policy::did_trap);
- }
-}
-
-T_DECL(subscript, "bounded_ptr.subscript", T_META_TAG_VM_PREFERRED) {
- tests<T, T>();
- tests<T, T const>();
- tests<T, T volatile>();
- tests<T, T const volatile>();
-
- // Make sure that we don't hard-error in the definition of operator[]
- // when instantiating a `bounded_ptr<cv-void>`
- test_bounded_ptr<void> p1;
- test_bounded_ptr<void const> p2;
- test_bounded_ptr<void volatile> p3;
- test_bounded_ptr<void const volatile> p4;
-}