[issue37961] Tracemalloc traces do not include original stack trace length

[Julien Danjou]

Julien Danjou <julien at danjou.info> added the comment:

> In fact, I didn't check: maybe traceback_t size is not change by your PR, because of memory aligment and padding.

It is changed. The current size is should be determined by sizeof(Py_uhash_t + int + int) which is 4 + 4 + 4, so 12 aligned/padded.

Using a short will add 2 bytes and potentially some space for 2 more bytes in the future. :)

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