Low-level issue with XCode 4 and MacPorts

[Joshua Root]

On 2011-6-23 06:02 , Sam Goldman wrote:
> 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.

Probably not the answer you're hoping for, but yes, the current Xcode
beta seems to be kind of broken and causes runtime errors for several
programs. See:

<https://trac.macports.org/ticket/29771#comment:7>

- Josh