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GArray supports a "zero_terminated" flag, but GPtrArray doesn't. This is odd, because especially for a pointer array it makes sense to have a %NULL sentinel. This would be for example useful to track or construct a strv array with a GPtrArray. As workaround for this missing feature you could use a GArray instead (ugly) or to explicitly add the %NULL element. However the latter increases the "len" of the array, which can be problematic if you want to still use the GPtrArray for other purposes. Add API for marking a GPtrArray as %NULL terminated. In that case, the API will ensure that there is always a valid %NULL sentinel after the array. Note that the API does not enforce that a %NULL terminated API actually has any data allocated. That means, even with a %NULL terminated array, pdata can still be %NULL (only if len is zero). Add g_ptr_array_new_null_terminated() constructor. The null-terminated flag cannot be cleared. Once the GPtrArray is flagged ...
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