arm/ios crash #52

issue subtly opened this issue on August 13, 2014

subtly commented at 2:33 PM on August 13, 2014: none

When running on arm/ios, secp256k1_start() fails with assertion: #4 0x0002878a in secp256k1_num_mod_inverse at /path/secp256k1/impl/num_gmp.h:134 #5 0x00028516 in secp256k1_fe_inv_var at /path/secp256k1/impl/field.h:138 #6 0x0002691e in secp256k1_ge_set_gej at /path/secp256k1/impl/group.h:58 #7 0x00025f3e in secp256k1_ecmult_start at /path/secp256k1/impl/ecmult.h:89 #8 0x00025db0 in secp256k1_start at /path/secp256k1/secp256k1.c:22

Assertion fails in secp256k1_num_mod_inverse(): mp_size_t sn = NUM_LIMBS+1; mp_size_t gn = mpn_gcdext(g, r->data, &sn, u, m->limbs, v, m->limbs); assert(gn == 1); <==

Compiled with std=gnu99, USE_NUM_GMP, USE_FIELD_GMP, and USE_FIELD_INV_NUM.

What's the significance of USE_FIELD_INV_NUM and Field settings? Any thoughts on compile settings for arm?
sipa commented at 10:15 PM on August 18, 2014: contributor

Can you try building with --with-bignum=openssl? Perhaps there is a bug in the GMP library, or an incompatibility with the version.
subtly commented at 10:14 AM on August 21, 2014: none

Thanks for the suggestion. I'll give that a try next week.
sipa commented at 12:22 PM on November 18, 2014: contributor

Did you call secp256k1_start()?
subtly commented at 5:45 AM on November 19, 2014: none

Probably the issue. Can close for now -- hope to have plenty of testing and questions in the future ;)
subtly closed this on Nov 19, 2014

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