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Add error checks to Python objectifier (#281)

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PYOBJ.COM was failing when statically analyzing _pyio.py in MODE=dbg
because co_consts contained a big number, which dirtied the interpreter
exception state. We now do comprehensive error checking w/ Python API.

The -DSTACK_FRAME_UNLIMITED CPPFLAG has been removed from DES since its
self test function has been fixed to use heap memory rather than making
aggressive use of the stack.

This change also fixes a regression with function tracing (the --ftrace
flag a.k.a. ftrace_install() a.k.a. cosmo.ftrace) in ASAN build modes.
Lastly, the _tracemalloc module should now always be available for use
in MODE=dbg.
This commit is contained in:
Justine Tunney 2021-10-02 06:17:17 -07:00
parent 57f0eed382
commit 9cb54218ab
10 changed files with 323 additions and 422 deletions
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13
third_party/python/Objects/tupleobject.c vendored
View file

@ -159,18 +159,23 @@ PyTuple_Size(PyObject *op)
return Py_SIZE(op);
}
/**
* Returns object at position 𝑖 in the tuple pointed to by 𝑝.
*
* @return borrowed reference, or NULL if 𝑖 is out of bounds
*/
PyObject *
PyTuple_GetItem(PyObject *op, Py_ssize_t i)
PyTuple_GetItem(PyObject *p, Py_ssize_t i)
{
if (!PyTuple_Check(op)) {
if (!PyTuple_Check(p)) {
PyErr_BadInternalCall();
return NULL;
}
if (i < 0 || i >= Py_SIZE(op)) {
if (i < 0 || i >= Py_SIZE(p)) {
PyErr_SetString(PyExc_IndexError, "tuple index out of range");
return NULL;
}
return ((PyTupleObject *)op) -> ob_item[i];
return ((PyTupleObject *)p) -> ob_item[i];
}
int