File: pointer-into-c-style-array-issue-402806166-original.cc

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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

unsigned UnsafeIndex();

// Expected rewrite:
// void UseBufferUnsafely(base::span<int> buffer) {
void UseBufferUnsafely(int* buffer) {
  buffer[UnsafeIndex()] = 13;
}

void Func() {
  // No expected rewrite: nothing unsafe happens in this scope.
  int array[10];

  // Even if the underlying C-style array isn't rewritten, the array is
  // passed to a spanified function - this requires that we rewrite the
  // call expression.
  //
  // Expected rewrite:
  // UseBufferUnsafely(array);
  UseBufferUnsafely(&array[0]);

  // With an offset (subspan) in play, we need to also wrap the array
  // declref in a `base::span()`.
  // Expected rewrite:
  // UseBufferUnsafely(base::span<int>(array).subspan(1u));
  UseBufferUnsafely(&array[1]);
}