Mercurial > hg
view contrib/fuzz/fuzzutil.cc @ 40853:d7e44da4dc70
shelve: drop unnecessary backup of dirstate for phase-based case
Regular shelve has a hack using an uncommitted transaction that's then
aborted at the end of the operation. It preserves the dirstate across
the abort, however, by saving a backup copy of it. Phase-based shelve
instead commits the transaction, so the hack shouldn't be necessary
there.
Differential Revision: https://phab.mercurial-scm.org/D5389
author | Martin von Zweigbergk <martinvonz@google.com> |
---|---|
date | Wed, 05 Dec 2018 14:08:01 -0800 |
parents | a1c0873a9990 |
children |
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#include "fuzzutil.h" #include <cstring> #include <utility> contrib::optional<two_inputs> SplitInputs(const uint8_t *Data, size_t Size) { if (!Size) { return contrib::nullopt; } // figure out a random point in [0, Size] to split our input. size_t left_size = (Data[0] / 255.0) * (Size - 1); // Copy inputs to new allocations so if bdiff over-reads // AddressSanitizer can detect it. std::unique_ptr<char[]> left(new char[left_size]); std::memcpy(left.get(), Data + 1, left_size); // right starts at the next byte after left ends size_t right_size = Size - (left_size + 1); std::unique_ptr<char[]> right(new char[right_size]); std::memcpy(right.get(), Data + 1 + left_size, right_size); LOG(2) << "inputs are " << left_size << " and " << right_size << " bytes" << std::endl; two_inputs result = {std::move(right), right_size, std::move(left), left_size}; return result; }