>> https://gist.github.com/3059829

> Looking at that program, it seems you build a very large recursive data
> structure and then free it in one go, without providing appropriate stack
> space for this operation, so the segfault just means "out of memory"
> because of the deep recursion.

> As such, the problem has nothing to do with Coro, you are just running out
> of memory (and Coro detects this because it places guard pages at the end
> of stack to catch this problem).

> You can verify that by using gdb to get a backtrace on the crash - most
> likely you will see hundreds of recursions inside sv_free.

> If you free large data structures you need to increase the stack space,
> either using ulimit -s and/or using Coro::State::cctx_stacksize. Or change
> your program to use less memory on free.


https://gist.github.com/3059829#gistcomment-366066

I've just dropped out a lot of unnessesary code and reduced iterations
count in test.

So now example crashes if it uses 100x(100+0-100) asyncs and uses
weaken.

But if it doesn't use weakens it never crashes even if it uses
500x(2000+0-100) iterations.

ulimit -s and Coro::State::cctx_stacksize don't influence on crashes.
-- 

. ''`.                               Dmitry E. Oboukhov
: :’  :   email: un...@debian.org jabber://un...@uvw.ru
`. `~’              GPGKey: 1024D / F8E26537 2006-11-21
  `- 1B23 D4F8 8EC0 D902 0555  E438 AB8C 00CF F8E2 6537

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