_macosx.so crash in build using Xcode 5

[fonnesbeck]

After upgrading to Xcode 5 on OS X 10.8.4, matplotlib is no longer able to use the macosx backend without crashing.

Here is the crash report from one such crash.

This is a build for the ScipySuperpack, so I am using a script that has successfully built working packages every 2 weeks or so until now. I also tried using the instructions in README.osx, with the same result.

[dmcdougall]

Looks like you're building from master. Are you able to successfully build v1.3 with Xcode 5?

[fonnesbeck]

I get a different error when running a build of 1.3:

ImportError: cannot import name _string_to_bool

This occurs when pylab is imported.

[fonnesbeck]

OK, I got a build to work using the 1.3 release. No crash.

[dmcdougall]

Thanks for the diagnostic information. This is probably related to the migration from 2to3 to six (the relevant commit is f4adec7), but I could be wrong. As a test, would you mind seeing if you are able to successfully build with Xcode 5 using the patch in #2433? If so, I'll close this issue. If not, then that means there's something funky going on.

[fonnesbeck]

This patch does not fix the issue. Same behavior results.

[mdboom]

Can you provide a full script that reproduces the error? (Or point to one of our examples that fails?) I'm unable to reproduce (once #2433 is applied, now merged to master).

[fonnesbeck]

Any plotting will cause the failure. This does it for me every time:

import matplotlib.pyplot as plt
plt.plot(range(10))

If I roll back to the 1.3 release, the problem disappears. I will try again from master incase I made a mistake in testing the patch.

[mdboom]

Make sure you remove the build directory before rebuilding to ensure a complete rebuild of the C++ code.

[fonnesbeck]

This is automated in my build script, so that is not the issue.

[tacaswell]

@fonnesbeck Is this still an issue?

@matthew-brett Do you build with a version of xcode?

[matthew-brett]

Yes - I build with the latest xcode - so I guess this isn't an issue.
The build logs from matplotlib-wheels give the full output if anyone
wants to check.

[tacaswell]

I am going to close this then.

@fonnesbeck ping to have this re-opened if you still have issues.