more size_t_ceiling fun
<doorss> need to replace "if (tok->object_size >= INT_MAX) {"
<doorss> with "if (tok->object_size >= SIZE_T_CEILING || tok->object_size >= INT_MAX) {"
<doorss> for two places.
<doorss> if it can be >= INT_MAX it can be INT_MAX - 1 too.
<doorss> "tok->object_body = ALLOC(next-*s); /* really, this is too much RAM. */" is fragile too. no checks, utill assert.
> doorss: which branch are you looking at?
<doorss> it was master.
<doorss> "if (tok->object_size >= INT_MAX)" mostly about cast to int. but if size can be such big (no assert here) so need to check for SIZE_T_CEILING.
<doorss> it prevents overflow underflow and another truncates during "sig->signature_len = (int) tok->object_size"
<doorss> SIZE_T_CEILING < INT_MAX for 32bit size_t
<doorss> if tok->object_size == INT_MAX - 1 then "sig->signature = tor_memdup(tok->object_body, tok->object_size)" trigger assert for 32 bit.
<doorss> we can't just replace INT_MAX with SIZE_T_CEILING. for 64 bit.
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