tsqueryin(PG_FUNCTION_ARGS)
{
	char	   *in = PG_GETARG_CSTRING(0);

	PG_RETURN_TSQUERY(parse_tsquery(in, pushval_asis, PointerGetDatum(NULL), false));
}

This weakness involves numeric computation errors, such as integer overflows, underflows, or precision losses, which can lead to miscalculations and exploitable behaviors in software.