Mercurial > hg
view contrib/fuzz/fncache.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 | 8766728dbce6 |
children |
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#include <Python.h> #include <assert.h> #include <stdlib.h> #include <unistd.h> #include "pyutil.h" #include <iostream> #include <string> extern "C" { static PYCODETYPE *code; extern "C" int LLVMFuzzerInitialize(int *argc, char ***argv) { contrib::initpy(*argv[0]); code = (PYCODETYPE *)Py_CompileString(R"py( try: for fn in ( parsers.isasciistr, parsers.asciilower, parsers.asciiupper, parsers.encodedir, parsers.pathencode, parsers.lowerencode, ): try: fn(data) except UnicodeDecodeError: pass # some functions emit this exception except AttributeError: # pathencode needs hashlib, which fails to import because the time # module fails to import. We should try and fix that some day, but # for now we at least get coverage on non-hashencoded codepaths. if fn != pathencode: raise # uncomment this for debugging exceptions # except Exception as e: # raise Exception('%r: %r' % (fn, e)) 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); if (!code) { std::cerr << "failed to compile Python code!" << std::endl; } return 0; } int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { PyObject *mtext = PyBytes_FromStringAndSize((const char *)Data, (Py_ssize_t)Size); PyObject *locals = PyDict_New(); PyDict_SetItemString(locals, "data", mtext); PyObject *res = PyEval_EvalCode(code, contrib::pyglobals(), locals); if (!res) { PyErr_Print(); } Py_XDECREF(res); Py_DECREF(locals); Py_DECREF(mtext); return 0; // Non-zero return values are reserved for future use. } }