Mercurial > hg
view contrib/fuzz/revlog.cc @ 49680:40e24d82b513
delta-find: make sure we only use newer full snapshot as candidate
The current code does not needs to protect against this, as there are no older
snapshot in the current cache. However as we are getting ready to reuse this
cache from one revision to another, we need the code to protect itself about
what's coming.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Sun, 06 Nov 2022 17:55:55 -0500 |
parents | efbbc2f9121e |
children |
line wrap: on
line source
#include <Python.h> #include <assert.h> #include <stdlib.h> #include <unistd.h> #include <string> #include "pyutil.h" extern "C" { static PYCODETYPE *code; extern "C" int LLVMFuzzerInitialize(int *argc, char ***argv) { contrib::initpy(*argv[0]); code = (PYCODETYPE *)Py_CompileString(R"py( for inline in (True, False): try: index, cache = parsers.parse_index2(data, inline) index.slicechunktodensity(list(range(len(index))), 0.5, 262144) index.stats() index.findsnapshots({}, 0, len(index) - 1) 10 in index for rev in range(len(index)): index.reachableroots(0, [len(index)-1], [rev]) node = index[rev][7] partial = index.shortest(node) index.partialmatch(node[:partial]) index.deltachain(rev, None, True) except Exception as e: pass # uncomment this print if you're editing this Python code # to debug failures. # print e )py", "fuzzer", Py_file_input); return 0; } int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { // Don't allow fuzzer inputs larger than 60k, since we'll just bog // down and not accomplish much. if (Size > 60000) { return 0; } PyObject *text = PyBytes_FromStringAndSize((const char *)Data, (Py_ssize_t)Size); PyObject *locals = PyDict_New(); PyDict_SetItemString(locals, "data", text); PyObject *res = PyEval_EvalCode(code, contrib::pyglobals(), locals); if (!res) { PyErr_Print(); } Py_XDECREF(res); Py_DECREF(locals); Py_DECREF(text); return 0; // Non-zero return values are reserved for future use. } }