[ros-users] Fwd: rosinstall (electric) fails on OSX10.7, +2 fixes.

[William Woodall]

Yeah I narrowed this down to those two lines earlier, but I couldn't figure
out what the exact issue was.  It narrows down to setting and accessing
variables in the FilterParams struct, but I think this is a symptom and not
the issue.  If i had to guess it probably has something to do with the
ellipsis (...) used in the parameters, because these same operations are
used in a similar print function with no problem.

Also, if you compile with clang++ it compiles fine, so I will try and take
this new finding to the llvm bug tracker (is that the correct tracker?).

I have attached a new patch that uses clang++ instead of g++ (llvm) on
Darwin 11.

https://code.ros.org/trac/ros/attachment/ticket/3626/rosconsole_osx_clang.patch

Not a perfect solution still but I hope this helps,

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
William Woodall
Graduate Software Engineering
Auburn University
w at auburn.edu
wjwwood at gmail.com
williamjwoodall.com
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~



On Wed, Aug 31, 2011 at 1:21 PM, Nicholas Butko <nbutko at ucsd.edu> wrote:

> Troy,
>
> I added a "minimal" patch to the trac. It shows two lines being commented.
> If either of them is uncommented, a compiler segfault results.
>
>
> https://code.ros.org/trac/ros/attachment/ticket/3626/rosconsole_cpp_patch_minimal.patch
>
> --Nick
>
> On Wed, Aug 31, 2011 at 10:59 AM, Troy Straszheim <
> straszheim at willowgarage.com> wrote:
>
>> On Wed, Aug 31, 2011 at 10:43 AM, Nicholas Butko <nbutko at ucsd.edu> wrote:
>>
>>> I just tried to install ROS (Electric) on OSX10.7 on my machine. I ran
>>> into two hurdles. Here are the fixes:
>>> 2: rosmake fails, with a compiler segfault in rosconsle
>>> I was disappointed to find that this is a known bug, with a known fix,
>>> and has been known for weeks prior to release. I'm sorry to see that a
>>> version of ros shipped with what is essentially a fatal issue in its core
>>> library. It seems this is a bug in Apple's llvm-gcc, and I know that OSX is
>>> not officially supported in ROS, and that there are a lot of hard issues
>>> that WG doesn't have time to support. This one takes a few minutes, and the
>>> workaround while not ideal seems harmless. A simple #ifdef __APPLE__ could
>>> have even made the workaround only for OSX platforms, leaving Ubuntu
>>> unaffected.
>>> Here is the bug/fix: https://code.ros.org/trac/ros/ticket/3626
>>> It works. Thanks William for the workaround.
>>>
>>
>> I saw that patch, I didn't think that silently disabling logging on OSX
>> was a good idea.   If you binary search with comments and/or #if 0 blocks,
>> you can probably figure out what specific lines are confusing the compiler.
>>  I bet it involves the va_list stuff.   Then we can figure out an actual
>> workaround.
>>
>> Also, the link to the llvm bug in that ticket is broken.  Knowing what the
>> clang folks have to say would help.
>>
>>
>>
>>
>>
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>>
>
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