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

transaction: leave unfinished without crashing when not properly released...

transaction: leave unfinished without crashing when not properly released I think the transaction.__del__ is there just as a last resort in case we (or an extension) forgot to release the transaction. When that happens, the repo can (or will on Python 3?) get deleted before the transaction. This leads to a crash in test-devel-warnings.t on Python 3 because we tried to access repo.dirstate, where repo was retried from a weak reference. There's not much we can do here, but let's at least avoid the crash. The user will have run `hg recover` afterwards regardless. Differential Revision: https://phab.mercurial-scm.org/D6664

Augie Fackler - - Load All Authors

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             pyutil.cc
        
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      #include "pyutil.h"

      #include <string>

      namespace contrib

      {

      static char cpypath[8192] = "\0";

      static PyObject *mainmod;

      static PyObject *globals;

      /* TODO: use Python 3 for this fuzzing? */

      PyMODINIT_FUNC initparsers(void);

      void initpy(const char *cselfpath)

      {

      	const std::string subdir = "/sanpy/lib/python2.7";

      	/* HACK ALERT: we need a full Python installation built without

      	   pymalloc and with ASAN, so we dump one in

      	   $OUT/sanpy/lib/python2.7. This helps us wire that up. */

      	std::string selfpath(cselfpath);

      	std::string pypath;

      	auto pos = selfpath.rfind("/");

      	if (pos == std::string::npos) {

      		char wd[8192];

      		getcwd(wd, 8192);

      		pypath = std::string(wd) + subdir;

      	} else {

      		pypath = selfpath.substr(0, pos) + subdir;

      	}

      	strncpy(cpypath, pypath.c_str(), pypath.size());

      	setenv("PYTHONPATH", cpypath, 1);

      	setenv("PYTHONNOUSERSITE", "1", 1);

      	/* prevent Python from looking up users in the fuzz environment */

      	setenv("PYTHONUSERBASE", cpypath, 1);

      	Py_SetPythonHome(cpypath);

      	Py_InitializeEx(0);

      	mainmod = PyImport_AddModule("__main__");

      	globals = PyModule_GetDict(mainmod);

      	initparsers();

      }

      PyObject *pyglobals()

      {

      	return globals;

      }

      } // namespace contrib

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				#include "pyutil.h"

				#include <string>

				namespace contrib
				{

				static char cpypath[8192] = "\0";

				static PyObject *mainmod;
				static PyObject *globals;

				/* TODO: use Python 3 for this fuzzing? */
				PyMODINIT_FUNC initparsers(void);

				void initpy(const char *cselfpath)
				{
				const std::string subdir = "/sanpy/lib/python2.7";
				/* HACK ALERT: we need a full Python installation built without
				pymalloc and with ASAN, so we dump one in
				$OUT/sanpy/lib/python2.7. This helps us wire that up. */
				std::string selfpath(cselfpath);
				std::string pypath;
				auto pos = selfpath.rfind("/");
				if (pos == std::string::npos) {
				char wd[8192];
				getcwd(wd, 8192);
				pypath = std::string(wd) + subdir;
				} else {
				pypath = selfpath.substr(0, pos) + subdir;
				}
				strncpy(cpypath, pypath.c_str(), pypath.size());
				setenv("PYTHONPATH", cpypath, 1);
				setenv("PYTHONNOUSERSITE", "1", 1);
				/* prevent Python from looking up users in the fuzz environment */
				setenv("PYTHONUSERBASE", cpypath, 1);
				Py_SetPythonHome(cpypath);
				Py_InitializeEx(0);
				mainmod = PyImport_AddModule("__main__");
				globals = PyModule_GetDict(mainmod);
				initparsers();
				}

				PyObject *pyglobals()
				{
				return globals;
				}

				} // namespace contrib