v3.2.x: Fix leaks in C++ code #17468
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tacaswell
approved these changes
May 21, 2020
WeatherGod
reviewed
May 21, 2020
| PyObject *meta_key, *meta_val; | ||
| Py_ssize_t pos = 0; | ||
| int meta_pos = 0; | ||
| std::vector<PyObject*> temp_strs; |
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don't know if it is worth it, but when doing push_back()s to a vector, one can save a fair amount of memory and allocation time by doing temp_strs.reserve(meta_size); before the loop for strings since we know the upper limit for this vector.
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I expect it won't be more than 10 or maybe 20, but I've added it since we do know the limit.
WeatherGod
approved these changes
May 21, 2020
If `info_ptr` isn't created, we should still destroy `png_ptr`.
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PR Summary
This is a cherry-pick of the leak fix in #17458, and another leak fix in the png code (which doesn't exist on
master.)PR Checklist