hghave: update the check for virtualenv
This started as `hghave --test-features` failing on Windows in `test-hghave.t`.
IDK how this worked, as neither my Linux nor Windows machines have the old
attribute with virtualenv 20.2.2, even on py2. I think this was noticed
recently because 357d8415aa27 mentioned an AttributeError, and mitigated by
making this py2 only. But as mentioned, this is also a problem on py2 (where
the failure was observed).
When I got this working by removing the attribute reference, the command in the
test failed because the `--no-site-package` argument was removed some time ago.
Therefore, this backs out 357d8415aa27 and references a known good attribute
(which was done to suppress the warning about an unused import) that also
ensures the command does not need the argument. Since there appears to be
(minor) broken stuff on py3, manually apply the `no-py3` guard that was backed
out of the check itself.
Differential Revision: https://phab.mercurial-scm.org/D9547
#include <Python.h>
#include <assert.h>
#include <stdlib.h>
#include <unistd.h>
#include "FuzzedDataProvider.h"
#include "pyutil.h"
#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:
lm = parsers.lazymanifest(mdata)
# iterate the whole thing, which causes the code to fully parse
# every line in the manifest
for e, _, _ in lm.iterentries():
# also exercise __getitem__ et al
lm[e]
e in lm
(e + 'nope') in lm
lm[b'xyzzy'] = (b'\0' * nlen, 'x')
# do an insert, text should change
assert lm.text() != mdata, "insert should change text and didn't: %r %r" % (lm.text(), mdata)
cloned = lm.filtercopy(lambda x: x != 'xyzzy')
assert cloned.text() == mdata, 'cloned text should equal mdata'
cloned.diff(lm)
del lm[b'xyzzy']
cloned.diff(lm)
# should be back to the same
assert lm.text() == mdata, "delete should have restored text but didn't: %r %r" % (lm.text(), mdata)
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 100k, since we'll just bog
// down and not accomplish much.
if (Size > 100000) {
return 0;
}
FuzzedDataProvider provider(Data, Size);
Py_ssize_t nodelength = provider.ConsumeBool() ? 20 : 32;
PyObject *nlen = PyLong_FromSsize_t(nodelength);
PyObject *mtext =
PyBytes_FromStringAndSize((const char *)Data, (Py_ssize_t)Size);
PyObject *locals = PyDict_New();
PyDict_SetItemString(locals, "mdata", mtext);
PyDict_SetItemString(locals, "nlen", nlen);
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.
}
}