FastRandomContext improvements and switch to ChaCha20#4987
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str4d
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February 16, 2021 12:21
Add full test vectors from spec, test per byte and per 8 bytes. Builds on #8086.
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Fixes a bug in which pop_back did not call the deleted item's destructor. Using the most general erase() implementation to implement all the others prevents similar bugs because the coupling between deallocation and destructor invocation only needs to be maintained in one place. Also reduces duplication of complex memmove logic. (cherry picked from commit 1e2c29f)
- add a swap operation to prevector tests (fails due to broken prevector::swap) - fix 2 prevector test operation conditions that were impossible (cherry picked from commit 4ed41a2)
swap was using an incorrect condition to determine when to apply an optimization (not swapping the full direct[] when swapping two indirect prevectors). Rather than correct the optimization I'm removing it for simplicity. Removing this optimization minutely improves performance in the typical (currently only) usage of member swap(), which is swapping with a freshly value-initialized object. (cherry picked from commit a7af72a)
(cherry picked from commit f71d4a3)
(cherry picked from commit e04326f)
(cherry picked from commit 1632922)
(cherry picked from commit 4fd2d2f)
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Contributor
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☔ The latest upstream changes (presumably #4985) made this pull request unmergeable. Please resolve the merge conflicts. |
Contributor
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Ugh, I do not understand GitHub's logic for closing PRs vs changing their base. It definitely triggers when the base branch is deleted, but maybe only PRs created from branches on this repo can have their bases changed? |
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Backport of bitcoin/bitcoin#9792