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do not leak buffer if mmap is not writable

This commit is contained in:
Benjamin Peterson 2016-10-05 23:29:07 -07:00
parent 4c8b2cd126
commit 3776836f67
1 changed files with 3 additions and 1 deletions
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4
Modules/mmapmodule.c
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@ -383,8 +383,10 @@ mmap_write_method(mmap_object *self,
if (!PyArg_ParseTuple(args, "y*:write", &data))
return(NULL);
if (!is_writable(self))
if (!is_writable(self)) {
PyBuffer_Release(&data);
return NULL;
}
if (self->pos > self->size || self->size - self->pos < data.len) {
PyBuffer_Release(&data);