Mercurial > hg
view contrib/fuzz/xdiff.cc @ 37265:923362010525
children: use repo['.'] instead of repo['']
Differential Revision: https://phab.mercurial-scm.org/D3020
author | Martin von Zweigbergk <martinvonz@google.com> |
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date | Tue, 03 Apr 2018 00:12:29 +0530 |
parents | 04d64163039a |
children | fa0ddd5e8fff |
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/* * xdiff.cc - fuzzer harness for thirdparty/xdiff * * Copyright 2018, Google Inc. * * This software may be used and distributed according to the terms of * the GNU General Public License, incorporated herein by reference. */ #include "thirdparty/xdiff/xdiff.h" #include <inttypes.h> #include <stdlib.h> extern "C" { int hunk_consumer(long a1, long a2, long b1, long b2, void *priv) { // TODO: probably also test returning -1 from this when things break? return 0; } int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { if (!Size) { return 0; } // figure out a random point in [0, Size] to split our input. size_t split = Data[0] / 255.0 * Size; mmfile_t a, b; // `a` input to diff is data[1:split] a.ptr = (char *)Data + 1; // which has len split-1 a.size = split - 1; // `b` starts at the next byte after `a` ends b.ptr = a.ptr + a.size; b.size = Size - split; xpparam_t xpp = { XDF_INDENT_HEURISTIC, /* flags */ }; xdemitconf_t xecfg = { XDL_EMIT_BDIFFHUNK, /* flags */ hunk_consumer, /* hunk_consume_func */ }; xdemitcb_t ecb = { NULL, /* priv */ }; xdl_diff(&a, &b, &xpp, &xecfg, &ecb); return 0; // Non-zero return values are reserved for future use. } #ifdef HG_FUZZER_INCLUDE_MAIN int main(int argc, char **argv) { const char data[] = "asdf"; return LLVMFuzzerTestOneInput((const uint8_t *)data, 4); } #endif } // extern "C"