contrib/fuzz/fuzzutil.h
author Augie Fackler <augie@google.com>
Sat, 28 Apr 2018 22:18:50 -0400
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child 38174 36d55f90e2a3
permissions -rw-r--r--
fuzz: extract some common utilities and use modern C++ idioms Alex Gaynor suggested we should probably copy the left and right sides of diffs to new blocks so we can detect over-reads in the diffing code, and I agree. Once I got into that, I realized we should do things with C++17 idioms rather than keep using malloc() and free(). This change is the result. I tried to split it more than this and failed. Everything still compiles and works in the oss-fuzz container, so I think we can count on C++17 being available! Differential Revision: https://phab.mercurial-scm.org/D3675
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#ifndef CONTRIB_FUZZ_FUZZUTIL_H
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#define CONTRIB_FUZZ_FUZZUTIL_H
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#include <iostream>
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#include <memory>
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#include <optional>
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#include <stdint.h>
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/* set DEBUG to 1 for a few debugging prints, or 2 for a lot */
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#define DEBUG 0
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#define LOG(level)                                                             \
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	if (level <= DEBUG)                                                    \
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	std::cout
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struct two_inputs {
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	std::unique_ptr<char[]> right;
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	size_t right_size;
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	std::unique_ptr<char[]> left;
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	size_t left_size;
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};
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/* Split a non-zero-length input into two inputs. */
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std::optional<two_inputs> SplitInputs(const uint8_t *Data, size_t Size);
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#endif /* CONTRIB_FUZZ_FUZZUTIL_H */