Re: segfault in gmp p-1 factorer

[Torbjorn Granlund]

Kevin Ryde <address@hidden> writes:

  Alexander Kruppa <address@hidden> writes:
  > 
  > I've written a simple P-1 factorer called gpm1. When I try to factor a
  > large number on a K6-3 450Mhz, the program segfaults. The segfault
  > occurs in mpn_sqr_basecase. The program runs fine on a P-II 400 Mhz, and
  > it runs fine for smaller numbers.
  
  Perhaps you're running out of stack space.  gmp uses the stack for
  some temporaries, you can configure with --disable-alloca to stop it
  doing that.
  
Unfortunately, that hurts performance.  It is better to use the ulimit
command (or the setrlimit syscall) to increase the allowed stack size.

-- 
Torbjörn