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This uses “static” at function scope to avoid making local copies, even in cases where the compiler can’t see that the local copy is unnecessary. “constexpr” adds additional safety in that it prevents global state from being initialized from any runtime dependencies, which would be undesirable. At namespace scope, “constexpr” is also used where appropriate. For the most part, this was a mechanical transformation for things matching '(^| )const [^=]*\['. Similar transformations could be applied to non-arrays in some cases, but there’s limited practical impact in most non-array cases relative to arrays, there are far more use sites, and much more manual intervention would be required. Change-Id: I3513b739ee8b0be026f8285475cddc5f9cc81152 Reviewed-on: https://chromium-review.googlesource.com/583997 Commit-Queue: Mark Mentovai <mark@chromium.org> Reviewed-by: Leonard Mosescu <mosescu@chromium.org>
45 lines
1.3 KiB
C++
45 lines
1.3 KiB
C++
// Copyright 2014 The Crashpad Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "util/numeric/int128.h"
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#include "base/bit_cast.h"
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#include "gtest/gtest.h"
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namespace crashpad {
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namespace test {
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namespace {
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TEST(Int128, UInt128) {
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#if defined(ARCH_CPU_LITTLE_ENDIAN)
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static constexpr uint8_t kBytes[] =
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{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
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#else
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static constexpr uint8_t kBytes[] =
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{15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0};
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#endif
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uint128_struct uint128;
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static_assert(sizeof(uint128) == sizeof(kBytes), "sizes must be equal");
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uint128 = bit_cast<uint128_struct>(kBytes);
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EXPECT_EQ(uint128.lo, 0x0706050403020100u);
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EXPECT_EQ(uint128.hi, 0x0f0e0d0c0b0a0908u);
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}
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} // namespace
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} // namespace test
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} // namespace crashpad
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