procutils: don't try to get `.buffer` if sys.stdin is None
While hunting down following test failure of test-chg.t on Python 3, I stumbled
the case when `.buffer` is not available as sys.stdin is None.
--- /home/pulkit/repo/hg-committed/tests/test-chg.t
+++ /home/pulkit/repo/hg-committed/tests/test-chg.t.err
@@ -203,7 +203,31 @@
$ CHGDEBUG=1 chg version -q 0<&-
chg: debug: * stdio fds are missing (glob)
chg: debug: * execute original hg (glob)
- Mercurial Distributed SCM * (glob)
+ Traceback (most recent call last):
+ File "/tmp/hgtests.avspvsq4/install/bin/hg", line 43, in <module>
+ dispatch.run()
+ File "/usr/lib/python3.6/importlib/util.py", line 233, in
__getattribute__
+ self.__spec__.loader.exec_module(self)
+ File "<frozen importlib._bootstrap_external>", line 678, in
exec_module
+ File "<frozen importlib._bootstrap>", line 219, in
_call_with_frames_removed
+ File
"/tmp/hgtests.avspvsq4/install/lib/python/mercurial/dispatch.py", line
726, in <module>
+ class lazyaliasentry(object):
+ File
"/tmp/hgtests.avspvsq4/install/lib/python/mercurial/dispatch.py", line
737, in lazyaliasentry
+ @util.propertycache
+ File "/usr/lib/python3.6/importlib/util.py", line 233, in
__getattribute__
+ self.__spec__.loader.exec_module(self)
+ File "<frozen importlib._bootstrap_external>", line 678, in
exec_module
+ File "<frozen importlib._bootstrap>", line 219, in
_call_with_frames_removed
+ File "/tmp/hgtests.avspvsq4/install/lib/python/mercurial/util.py",
line 3473, in <module>
+ f=procutil.stderr,
+ File "/usr/lib/python3.6/importlib/util.py", line 233, in
__getattribute__
+ self.__spec__.loader.exec_module(self)
+ File "<frozen importlib._bootstrap_external>", line 678, in
exec_module
+ File "<frozen importlib._bootstrap>", line 219, in
_call_with_frames_removed
+ File
"/tmp/hgtests.avspvsq4/install/lib/python/mercurial/utils/procutil.py",
line 127, in <module>
+ stdin = sys.stdin.buffer
+ AttributeError: 'NoneType' object has no attribute 'buffer'
+ [1]
server lifecycle
----------------
Differential Revision: https://phab.mercurial-scm.org/D9500
#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)
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.
}
}