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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <array>
#include <cstdint>
#include <cstring>
#include <tuple>
#include "base/containers/auto_spanification_helper.h"
#include "base/containers/span.h"
// No rewrite expected.
extern const int kPropertyVisitedIDs[];
namespace ns1 {
struct Type1 {
int value;
};
} // namespace ns1
int UnsafeIndex(); // This function might return an out-of-bound index.
struct Component {
// Expected rewrite:
// std::array<int, 10> values;
std::array<int, 10> values;
};
void fct() {
// Expected rewrite:
// auto buf = std::to_array<int>({1, 2, 3, 4});
auto buf = std::to_array<int>({1, 2, 3, 4});
buf[UnsafeIndex()] = 11;
Component component;
// Triggers the rewrite of Component::values
component.values[UnsafeIndex()]++;
// Expected rewrite:
// std::array<int, 5> buf2 = {1, 1, 1, 1, 1};
std::array<int, 5> buf2 = {1, 1, 1, 1, 1};
buf2[UnsafeIndex()] = 11;
constexpr int size = 5;
// Expected rewrite:
// constexpr std::array<int, size> buf3 = {1, 1, 1, 1, 1};
constexpr std::array<int, size> buf3 = {1, 1, 1, 1, 1};
(void)buf3[UnsafeIndex()];
// Expected rewrite:
// std::array<int, buf3[0]> buf4;
std::array<int, buf3[0]> buf4;
buf4[UnsafeIndex()] = 11;
// Expected rewrite:
// auto buf5 = std::to_array<ns1::Type1>({{1}, {1}, {1}, {1}, {1}});
auto buf5 = std::to_array<ns1::Type1>({{1}, {1}, {1}, {1}, {1}});
buf5[UnsafeIndex()].value = 11;
// Expected rewrite:
// auto buf6 = std::to_array<uint16_t>({1, 1, 1});
auto buf6 = std::to_array<uint16_t>({1, 1, 1});
buf6[UnsafeIndex()] = 1;
// Expected rewrite:
// std::array<int (*)(int), 16> buf7 = {};
std::array<int (*)(int), 16> buf7 = {};
buf7[UnsafeIndex()] = nullptr;
// Expected rewrite:
// std::array<int (**)[], 16> buf8 = {};
std::array<int (**)[], 16> buf8 = {};
buf8[UnsafeIndex()] = nullptr;
using Arr = int (**)[];
// Expected rewrite:
// std::array<Arr, buf3[0]> buf9 = {};
std::array<Arr, buf3[0]> buf9 = {};
buf9[UnsafeIndex()] = nullptr;
// Expected rewrite:
// static auto buf10 = std::to_array<const volatile char*>({"1", "2", "3"});
static auto buf10 = std::to_array<const volatile char*>({"1", "2", "3"});
buf10[UnsafeIndex()] = nullptr;
std::ignore = kPropertyVisitedIDs[UnsafeIndex()];
}
void sizeof_array_expr() {
// Expected rewrite:
// auto buf = std::to_array<int>({1});
auto buf = std::to_array<int>({1});
std::ignore = buf[UnsafeIndex()];
// Expected rewrite:
// std::ignore = base::SpanificationSizeofForStdArray(buf);
std::ignore = base::SpanificationSizeofForStdArray(buf);
// Expected rewrite:
// std::ignore = base::SpanificationSizeofForStdArray(buf);
std::ignore = base::SpanificationSizeofForStdArray(buf);
// Expected rewrite:
// std::ignore = sizeof buf[0];
std::ignore = sizeof buf[0];
std::ignore = sizeof buf[0];
}
// Test for crbug.com/383424943.
void crbug_383424943() {
// No rewrite expected.
int buf[]{1};
// Using sizeof was causing buf to be rewritten.
memset(buf, 'x', sizeof(buf));
}
// Expected rewrite:
// void c_ptr_param(base::span<int> ptr)
void c_ptr_param(base::span<int> ptr) {
std::ignore = ptr[UnsafeIndex()];
}
// Expected rewrite:
// void c_array_param(base::span<int, 1 + 2> arr)
void c_array_param(base::span<int, 1 + 2> arr) {
std::ignore = arr[UnsafeIndex()];
}
// Expected rewrite:
// void c_array_nosize_param(base::span<int> arr)
void c_array_nosize_param(base::span<int> arr) {
std::ignore = arr[UnsafeIndex()];
}
void test_func_params() {
// Expected rewrite:
// auto arr = std::to_array<int>({1, 2, 3});
auto arr = std::to_array<int>({1, 2, 3});
std::ignore = arr[UnsafeIndex()];
c_ptr_param(arr);
c_array_param(arr);
c_array_nosize_param(arr);
}
struct ProgramInfo {
// Expected rewrite:
// mutable std::array<int, 10> filename_offsets;
mutable std::array<int, 10> filename_offsets;
};
void test_with_mutable() {
const ProgramInfo info;
info.filename_offsets[UnsafeIndex()] = 0xdead;
}
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