On 2014-02-12 11:13, Cyrille Henry wrote:
hello,
We are trying to get small text file from the internet using mrpeach net
objects.
there is some few crash. gdb backtrace gives :
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fff8cf81700 (LWP 31771)]
0x00007fffeab9fa94 in tcpclient_child_connect (w=0x7fffea88d010) at
tcpclient.c:225
225 x->x_addr = ntohl(*(long *)hp->h_addr);
(gdb) watchdog: signaling pd...
watchdog: signaling pd...
bt
#0 0x00007fffeab9fa94 in tcpclient_child_connect (w=0x7fffea88d010) at
tcpclient.c:225
#1 0x00007ffff73a8f6e in start_thread (arg=0x7fff8cf81700) at
pthread_create.c:311
#2 0x00007ffff6ecf9cd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
(this is on ubuntu 13.10 linux 64 bit / pd 0.45 / mrpeach from svn, but
osX gives the same kind of crash )
iemnet object are not more stable.
there are lot's of thread about this in the list. is there anything new,
or something we can do to avoid crash?
I don't recall any threads about this kind of crash.
It looks like a 64-bit issue. If it really crashes at
x->x_addr = ntohl(*(long *)hp->h_addr);
then possibly the long type is too long or the h_addr field is not a
long in 64-bit or h_addr is not properly initialized, so ntohl() looks
in the wrong place and segfaults. I never get any such crashes on 32-bit
systems, but so far I haven't tried it on 64-bit.
or is there an other solution that would be cross platform (linux, osX,
windows) and would allow a patch to download text file from a server?
You could probably make a single object with pdlua or pyext that does
just that.
Martin
thanks
cheers
Cyrille
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