94 lines
4.5 KiB
Diff
Executable file
94 lines
4.5 KiB
Diff
Executable file
From 0ce5e91bdfa2cd7cac247911b9e8c4404c114937 Mon Sep 17 00:00:00 2001
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From: Peter Varga <pvarga@inf.u-szeged.hu>
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Date: Thu, 21 Apr 2022 08:49:53 +0200
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Subject: [PATCH] Workaround MSVC2022 ICE in constexpr functions
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It happens around initialization of STL containers in a constexpr
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function. In this case, aggregate initialization of std::array with
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double braces seems to cause the crash.
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For some reason it doesn't seem to happen in 98-based. This workaround
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can be reverted after Microsoft fixes the issue:
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https://developercommunity.visualstudio.com/t/fatal-error-C1001:-Internal-compiler-err/1669485
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Change-Id: I6bc2c71d328691cc74bc53c6d62f3d5df519b81e
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Pick-to: 90-based
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Fixes: QTBUG-101917
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Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
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---
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diff --git a/chromium/base/hash/md5_constexpr_internal.h b/chromium/base/hash/md5_constexpr_internal.h
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index b705bc8..5c9c004 100644
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--- a/chromium/base/hash/md5_constexpr_internal.h
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+++ b/chromium/base/hash/md5_constexpr_internal.h
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@@ -281,15 +281,63 @@
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return IntermediateDataToMD5Digest(ProcessMessage(data, n));
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}
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- static constexpr uint64_t Hash64(const char* data, uint32_t n) {
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- IntermediateData intermediate = ProcessMessage(data, n);
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- return (static_cast<uint64_t>(SwapEndian(intermediate.a)) << 32) |
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- static_cast<uint64_t>(SwapEndian(intermediate.b));
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+ static constexpr uint64_t Hash64(const char* message, uint32_t n) {
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+ const uint32_t m = GetPaddedMessageLength(n);
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+ IntermediateData intermediate0 = kInitialIntermediateData;
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+ for (uint32_t offset = 0; offset < m; offset += 64) {
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+ RoundData data = {
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+ GetPaddedMessageWord(message, n, m, offset),
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+ GetPaddedMessageWord(message, n, m, offset + 4),
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+ GetPaddedMessageWord(message, n, m, offset + 8),
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+ GetPaddedMessageWord(message, n, m, offset + 12),
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+ GetPaddedMessageWord(message, n, m, offset + 16),
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+ GetPaddedMessageWord(message, n, m, offset + 20),
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+ GetPaddedMessageWord(message, n, m, offset + 24),
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+ GetPaddedMessageWord(message, n, m, offset + 28),
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+ GetPaddedMessageWord(message, n, m, offset + 32),
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+ GetPaddedMessageWord(message, n, m, offset + 36),
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+ GetPaddedMessageWord(message, n, m, offset + 40),
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+ GetPaddedMessageWord(message, n, m, offset + 44),
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+ GetPaddedMessageWord(message, n, m, offset + 48),
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+ GetPaddedMessageWord(message, n, m, offset + 52),
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+ GetPaddedMessageWord(message, n, m, offset + 56),
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+ GetPaddedMessageWord(message, n, m, offset + 60)};
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+ IntermediateData intermediate1 = intermediate0;
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+ for (uint32_t i = 0; i < 64; ++i)
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+ intermediate1 = ApplyStep(i, data, intermediate1);
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+ intermediate0 = Add(intermediate0, intermediate1);
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+ }
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+ return (static_cast<uint64_t>(SwapEndian(intermediate0.a)) << 32) |
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+ static_cast<uint64_t>(SwapEndian(intermediate0.b));
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}
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- static constexpr uint32_t Hash32(const char* data, uint32_t n) {
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- IntermediateData intermediate = ProcessMessage(data, n);
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- return SwapEndian(intermediate.a);
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+ static constexpr uint32_t Hash32(const char* message, uint32_t n) {
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+ const uint32_t m = GetPaddedMessageLength(n);
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+ IntermediateData intermediate0 = kInitialIntermediateData;
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+ for (uint32_t offset = 0; offset < m; offset += 64) {
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+ RoundData data = {
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+ GetPaddedMessageWord(message, n, m, offset),
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+ GetPaddedMessageWord(message, n, m, offset + 4),
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+ GetPaddedMessageWord(message, n, m, offset + 8),
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+ GetPaddedMessageWord(message, n, m, offset + 12),
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+ GetPaddedMessageWord(message, n, m, offset + 16),
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+ GetPaddedMessageWord(message, n, m, offset + 20),
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+ GetPaddedMessageWord(message, n, m, offset + 24),
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+ GetPaddedMessageWord(message, n, m, offset + 28),
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+ GetPaddedMessageWord(message, n, m, offset + 32),
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+ GetPaddedMessageWord(message, n, m, offset + 36),
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+ GetPaddedMessageWord(message, n, m, offset + 40),
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+ GetPaddedMessageWord(message, n, m, offset + 44),
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+ GetPaddedMessageWord(message, n, m, offset + 48),
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+ GetPaddedMessageWord(message, n, m, offset + 52),
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+ GetPaddedMessageWord(message, n, m, offset + 56),
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+ GetPaddedMessageWord(message, n, m, offset + 60)};
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+ IntermediateData intermediate1 = intermediate0;
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+ for (uint32_t i = 0; i < 64; ++i)
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+ intermediate1 = ApplyStep(i, data, intermediate1);
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+ intermediate0 = Add(intermediate0, intermediate1);
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+ }
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+ return SwapEndian(intermediate0.a);
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}
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};
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