Mercurial > hg
view contrib/fuzz/fuzzutil.cc @ 43611:27c25c0dc967
rust-matchers: remove default implementations for `Matcher` trait
We don't expect a whole lot of matchers to be defined, and this makes it more
obvious what a matcher does by reading its `impl Matcher for FooMatcher`.
This patch has the added benefit of fixing the `AlwaysMatcher`, its `matches`
function differs from the former default.
Differential Revision: https://phab.mercurial-scm.org/D7255
author | Raphaël Gomès <rgomes@octobus.net> |
---|---|
date | Wed, 06 Nov 2019 16:24:24 +0100 |
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; }