[issue8092] utf8, backslashreplace and surrogates

[Antoine Pitrou]

Antoine Pitrou <pitrou at free.fr> added the comment:

> I don't know if "nallocated += repsize - 4;" can overflow or not.
> If yes, how can I detect the overflow?

Sure, if they are both Py_ssize_t, just use:

if (nallocated > PY_SSIZE_T_MAX - repsize + 4) {
  /* handle overflow ... */
}

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nosy: +pitrou

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