Ciao, Il Sab, 19 Dicembre 2015 5:09 am, Robert Baruch ha scritto: > Oh, BTW, there is also the same problem in mpn/trialdiv.c:68, where > gmp_primes_tab has a 24-bit field in an unsigned int.
Uhm... unsigned int idx:24; /* index of first primes in dtab */ Makefile asks gen-trialdivtab to generate tables up-to 8000. There are 1007 primes smaller than 8000, so that the index should fit in 10 bits... unsigned int np :8; /* number of primes related to this entry */ The product of the smallest 31 primes requires more than 160 bits, much larger than any limb size we currently support... np should fit in 5 bits... With tighter definitions, both bit fields should fit a 16-bit integer. Regards, m -- http://bodrato.it/papers/ _______________________________________________ gmp-bugs mailing list [email protected] https://gmplib.org/mailman/listinfo/gmp-bugs
