Zengtudor/pybind11
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use RAII in dispatcher to avoid refcount leaks in certain circumstances when handling exceptions

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This commit is contained in:
Wenzel Jakob 2016-01-17 22:36:36 +01:00
parent 66c9a40213
commit f4671f6a04
1 changed files with 7 additions and 13 deletions
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20
include/pybind11/pybind11.h
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@ -227,20 +227,20 @@ private:
*result = (PyObject *) 1;
try {
for (; it != nullptr; it = it->next) {
PyObject *args_ = args;
object args_(args, true);
int kwargs_consumed = 0;
if (nargs < (int) it->args.size()) {
args_ = PyTuple_New(it->args.size());
args_ = object(PyTuple_New(it->args.size()), false);
for (int i = 0; i < nargs; ++i) {
PyObject *item = PyTuple_GET_ITEM(args, i);
Py_INCREF(item);
PyTuple_SET_ITEM(args_, i, item);
PyTuple_SET_ITEM(args_.ptr(), i, item);
}
int arg_ctr = 0;
for (auto const &it2 : it->args) {
int index = arg_ctr++;
if (PyTuple_GET_ITEM(args_, index))
if (PyTuple_GET_ITEM(args_.ptr(), index))
continue;
PyObject *value = nullptr;
if (kwargs)
@ -251,7 +251,7 @@ private:
value = it2.value;
if (value) {
Py_INCREF(value);
PyTuple_SET_ITEM(args_, index, value);
PyTuple_SET_ITEM(args_.ptr(), index, value);
} else {
kwargs_consumed = -1; /* definite failure */
break;
@ -260,11 +260,7 @@ private:
}
if (kwargs_consumed == nkwargs)
result = it->impl(it, args_, parent);
if (args_ != args) {
Py_DECREF(args_);
}
result = it->impl(it, args_.ptr(), parent);
if (result != (PyObject *) 1)
break;
@ -868,15 +864,13 @@ private:
instance_type *inst = (instance_type *) inst_;
try {
new (&inst->holder) holder_type(
inst->value->shared_from_this()
);
inst->value->shared_from_this());
} catch (const std::bad_weak_ptr &) {
new (&inst->holder) holder_type(inst->value);
}
inst->constructed = true;
}
static void dealloc(PyObject *inst_) {
instance_type *inst = (instance_type *) inst_;
if (inst->owned) {