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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // This file is meant for analyzing the code generated by the CHECK | 5 // This file is meant for analyzing the code generated by the CHECK |
6 // macros in a small executable file that's easy to disassemble. | 6 // macros in a small executable file that's easy to disassemble. |
7 | 7 |
8 #include "base/compiler_specific.h" | |
9 #include "base/logging.h" | 8 #include "base/logging.h" |
10 | 9 |
11 // An official build shouldn't generate code to print out messages for | 10 // An official build shouldn't generate code to print out messages for |
12 // the CHECK* macros, nor should it have the strings in the | 11 // the CHECK* macros, nor should it have the strings in the |
13 // executable. It is also important that the CHECK() function collapse to the | 12 // executable. |
14 // same implementation as RELEASE_ASSERT(), in particular on Windows x86. | |
15 // Historically, the stream eating caused additional unnecessary instructions. | |
16 // See https://crbug.com/672699. | |
17 | |
18 #define BLINK_RELEASE_ASSERT_EQUIVALENT(assertion) \ | |
19 (UNLIKELY(!(assertion)) ? (IMMEDIATE_CRASH()) : (void)0) | |
20 | 13 |
21 void DoCheck(bool b) { | 14 void DoCheck(bool b) { |
22 CHECK(b) << "DoCheck " << b; | 15 CHECK(b) << "DoCheck " << b; |
23 } | 16 } |
24 | 17 |
25 void DoBlinkReleaseAssert(bool b) { | |
26 BLINK_RELEASE_ASSERT_EQUIVALENT(b); | |
27 } | |
28 | |
29 void DoCheckEq(int x, int y) { | 18 void DoCheckEq(int x, int y) { |
30 CHECK_EQ(x, y); | 19 CHECK_EQ(x, y); |
31 } | 20 } |
32 | 21 |
33 int main(int argc, const char* argv[]) { | 22 int main(int argc, const char* argv[]) { |
34 DoCheck(argc > 1); | 23 DoCheck(argc > 1); |
35 DoCheckEq(argc, 1); | 24 DoCheckEq(argc, 1); |
36 DoBlinkReleaseAssert(argc > 1); | |
37 } | 25 } |
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