upstream/mercurial-mirror Files · contrib/fuzz/bdiff.cc

make: switch the PYTHON default to `py.exe -3` on Windows...

make: switch the PYTHON default to `py.exe -3` on Windows Python3 _is_ named `python.exe` on Windows, but that isn't necessarily on PATH when installing from python.org. I do happen to have a python.exe on PATH in `$LOCALAPPDATA/Microsoft/WindowsApps`, but it appears to be 0 bytes (likely because of permission issues), and doesn't run: $ python -V - Cannot open Pulkit hit the same error as I did though, so it isn't just my system: $ make -C . local make: Entering directory `/home/Dell/repos/hg-committed` python setup.py \ build_py -c -d . \ build_ext -i \ build_hgexe -i \ build_mo - Cannot openmake: *** [local] Error 1 The `py.exe` dispatcher lives in the Windows directory (so it is on PATH), looks up the python.org installation, and invokes that interpreter directly. I get a warning with py39, but if it's our issue, it was an existing one: $ make -C .. local make: Entering directory `/c/Users/Matt/hg' py -3 setup.py \ build_py -c -d . \ build_ext -i \ build_hgexe -i \ build_mo C:\Users\Matt\AppData\Local\Programs\Python\Python39\lib\site-packages\setuptools\distutils_patch.py:25: UserWarning: Distutils was imported before Setuptools. This usage is discouraged and may exhibit undesirable behaviors or errors. Please use Setuptools' objects directly or at least import Setuptools first. warnings.warn( The end result is a py3 based hg.exe that annoyingly won't run because it can't find python39.dll. It will run tests (the ones without the `python3` shbang line anyway), because the test runner adjusts PATH to include the python running it. Differential Revision: https://phab.mercurial-scm.org/D9361

Augie Fackler - - Load All Authors

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      /*

       * bdiff.cc - fuzzer harness for bdiff.c

       *

       * 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 <memory>

      #include <stdlib.h>

      #include "FuzzedDataProvider.h"

      extern "C" {

      #include "bdiff.h"

      extern "C" int LLVMFuzzerInitialize(int *argc, char ***argv)

      {

      	return 0;

      }

      int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size)

      {

      	FuzzedDataProvider provider(Data, Size);

      	std::string left = provider.ConsumeRandomLengthString(Size);

      	std::string right = provider.ConsumeRemainingBytesAsString();

      	struct bdiff_line *a, *b;

      	int an = bdiff_splitlines(left.c_str(), left.size(), &a);

      	int bn = bdiff_splitlines(right.c_str(), right.size(), &b);

      	struct bdiff_hunk l;

      	bdiff_diff(a, an, b, bn, &l);

      	free(a);

      	free(b);

      	bdiff_freehunks(l.next);

      	return 0; // Non-zero return values are reserved for future use.

      }

      } // extern "C"

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				/*
				* bdiff.cc - fuzzer harness for bdiff.c
				*
				* 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 <memory>
				#include <stdlib.h>

				#include "FuzzedDataProvider.h"

				extern "C" {
				#include "bdiff.h"

				extern "C" int LLVMFuzzerInitialize(int argc, char **argv)
				{
				return 0;
				}

				int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size)
				{
				FuzzedDataProvider provider(Data, Size);
				std::string left = provider.ConsumeRandomLengthString(Size);
				std::string right = provider.ConsumeRemainingBytesAsString();

				struct bdiff_line a, b;
				int an = bdiff_splitlines(left.c_str(), left.size(), &a);
				int bn = bdiff_splitlines(right.c_str(), right.size(), &b);
				struct bdiff_hunk l;
				bdiff_diff(a, an, b, bn, &l);
				free(a);
				free(b);
				bdiff_freehunks(l.next);
				return 0; // Non-zero return values are reserved for future use.
				}

				} // extern "C"