Low-level issue with XCode 4 and MacPorts

Sam Goldman samwgoldman at gmail.com
Wed Jun 22 13:02:48 PDT 2011

I installed the XCode 4.2 beta w/ iOS 5 on Snow Leopard and then
installed a fresh MacPorts on top. MacPorts runs fine, and I tried to
install irssi, which installed successfully. However, when I tried to
run it, I got the following error:

macbook:~ sam$ irssi
Terminal doesn't support cursor movement
Can't initialize screen handling, quitting.
You can still use the dummy mode with -d parameter

Thinking perhaps this issue would be resolved upstream, I cleared out
my MacPorts and installed from subversion, per the guide[1]. I
experienced the same issue.

On IRC, someone suggested that I try to install something simpler,
htop. htop installed successfully but segfaults when I try to run it.
Here is a GDB session with backtrace:

macbook:~ sam$ gdb htop
GNU gdb 6.3.50-20050815 (Apple version gdb-1700.2) (Thu May 19
01:38:32 UTC 2011)
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "x86_64-apple-darwin"...Reading symbols for
shared libraries ... done

(gdb) run
Starting program: /opt/local/bin/htop
Reading symbols for shared libraries ++. done

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x0000000000000020
0x000000010003d419 in _nc_init_keytry ()
(gdb) bt
#0  0x000000010003d419 in _nc_init_keytry ()
#1  0x000000010003e422 in _nc_keypad ()
#2  0x000000010000352d in CRT_init ()
#3  0x0000000100004d3b in main ()

I think that the issue is very low level, perhaps with curses or
terminfo. I'm not sure the best way to confirm or deny.

I realize that XCode 4 is beta and not everyone will have it, but I
would be happy to help with the debugging effort.


1. http://guide.macports.org/#installing.macports.subversion

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