EXC_I386_INVOP in GMP 6.1.2 on OS X

Torbjörn Granlund tg at gmplib.org
Sat May 25 11:26:56 UTC 2019

  ->  0x1000d04f5 <+213>: mulxq  (%rsi), %r9, %rax

You have configured your GMP for a too new CPU.  The mulx instruction is
available in Intel Broadwell, Skylake and newer, and in Amd Excavator,

Presumably, you have configured GMP on a new system and then run it on
an older system.

Please encrypt, key id 0xC8601622

More information about the gmp-bugs mailing list