File: unsafe_buffers_unittest.cc

package info (click to toggle)
chromium 138.0.7204.183-1
  • links: PTS, VCS
  • area: main
  • in suites: trixie
  • size: 6,071,908 kB
  • sloc: cpp: 34,937,088; ansic: 7,176,967; javascript: 4,110,704; python: 1,419,953; asm: 946,768; xml: 739,971; pascal: 187,324; sh: 89,623; perl: 88,663; objc: 79,944; sql: 50,304; cs: 41,786; fortran: 24,137; makefile: 21,806; php: 13,980; tcl: 13,166; yacc: 8,925; ruby: 7,485; awk: 3,720; lisp: 3,096; lex: 1,327; ada: 727; jsp: 228; sed: 36
file content (35 lines) | stat: -rw-r--r-- 955 bytes parent folder | download | duplicates (7) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
 
// 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 "base/compiler_specific.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace {

template <int A = 0, int B = 0>
UNSAFE_BUFFER_USAGE int uses_pointer_as_array(int* i) {
  return UNSAFE_BUFFERS(i[1]);
}

TEST(UnsafeBuffers, Macro) {
  int arr[] = {1, 2};

  // Should compile even with -Wunsafe-buffer-usage.
  int x = UNSAFE_BUFFERS(uses_pointer_as_array(arr));
  EXPECT_EQ(x, 2);

  // Should compile even with -Wunsafe-buffer-usage.
  UNSAFE_BUFFERS({
    uses_pointer_as_array(arr);
    uses_pointer_as_array(arr);
  });

  // Commas don't break things. This comma is not wrapped in `()` which verifies
  // the macro handles the comma correctly. `()` would hide the comma from the
  // macro.
  int y = UNSAFE_BUFFERS(uses_pointer_as_array<1, 1>(arr));
  EXPECT_EQ(y, 2);
}

}  // namespace