This looks like that was introduced by a patching error when fixing the Tk save figure bug recently. The bug tracker added an extraneous newline to my patch submitted as a comment. (That's the last time I do that ;)
http://sourceforge.net/tracker/index.php?func=detail&aid=1716732&group_id=80706&atid=560720 The segfault was happening because it was trying to blit to a window that had been destroyed (and the figure manager wasn't creating a new window as it should have.) I've committed a fix on the Python end, and also a check to the C side (_tkagg.cpp), so that if we get ourselves into that situation again, we'll get a Python exception rather than a segfault. If you still see crashes with the Qt backend, also let us know. This fix doesn't affect Qt at all. Cheers, Mike Michael Droettboom wrote: > FWIW, I'm able to reproduce this here. I have a hunch it may be related > to my recent Tk memory leak "improvements". I'll look into this further > and get back soon. > > Cheers, > Mike > > John Hunter wrote: > >> On 7/13/07, Rob Hetland <[EMAIL PROTECTED]> wrote: >> >> >>> Nope -- the same occurs in the regular terminal, so it's not >>> iPython's fault. >>> >>> Also, although I though I remembered this happening with qt4 (as >>> posted below), I do not seem to be able to reproduce this now.. >>> >>> Also, clearing and closing the figure works fine -- only clicking it >>> away triggers the bug. >>> So: Almost surely MPL, probably Tk, is my guess. >>> >>> >> Included below are our standard segfault instructions. The first >> thing to do is to make sure you blow away your build dir and installed >> mpl and get a clean build. Secondly, make sure you are using numpy >> and your rc numerix setting is numpy. Here are the instructions:: >> >> >> # How to diagnose where a segfault is occurring >> >> First thing to try is simply rm -rf the site-packages/matplotlib and >> build subdirs and get a clean install. Installing a new version over >> a pretty old version has been known to cause trouble, segfault, etc. >> >> Try importing these packages individually >> >> import matplotlib._image >> import matplotlib._transforms >> >> #one of these three depending on which numerix package you are using >> import matplotlib.backends._na_backend_agg # for numarray >> import matplotlib.backends._nc_backend_agg # for Numeric >> import matplotlib.backends._ns_backend_agg # for numpy >> >> import matplotlib.backends._tkagg >> import matplotlib._agg >> >> >> If the last two work and the others don't, it is likely you need to >> upgrade your gcc, because on some platforms (OS X for sure) old >> versions of gcc cannot compile new versions of pycxx, which matplotlib >> uses for building some but not all of it's extensions. Report back >> which if any work or segfault or raise tracebacks, >> >> If that shed additional light, again flush the build and install dirs, >> and try setting VERBOSE=True in setup.py before doing a clean install. >> The VERBOSE setting will generate lots of extra output and may help >> indicate where the segfault is occurring >> >> ------------------------------------------------------------------------- >> This SF.net email is sponsored by DB2 Express >> Download DB2 Express C - the FREE version of DB2 express and take >> control of your XML. No limits. Just data. Click to get it now. >> http://sourceforge.net/powerbar/db2/ >> _______________________________________________ >> Matplotlib-devel mailing list >> Matplotlib-devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/matplotlib-devel >> >> > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by DB2 Express > Download DB2 Express C - the FREE version of DB2 express and take > control of your XML. No limits. Just data. Click to get it now. > http://sourceforge.net/powerbar/db2/ > _______________________________________________ > Matplotlib-devel mailing list > Matplotlib-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-devel > ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Matplotlib-devel mailing list Matplotlib-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
