https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61303
--- Comment #9 from Ian Lance Taylor <ian at airs dot com> ---
>From looking at the code it seems that mmap may be returning MAP_FAILED. That
could lead to this crash. I don't know why mmap would fail, though. It's a
shame that the program works when run under truss.
If you feel like experimenting, look at the call to runtime_SysAlloc near the
start of runtime_netpoll in libgo/runtime/netpoll_select.c. Add something like
if(prfds == nil)
runtime_throw("runtime_SysAlloc returned nil");
and see if you see that error instead of the crash.
