Re: [Matplotlib-users] crash on MacOS X (more info)

[Russell E. O. <ro...@ce...>]

In article <row...@se...>,
 "Russell E. Owen" <ro...@ce...> 
 wrote:

> I'm trying to figure out a matplotlib crash on MacOS X.
> 
> When I try to plot anything the program exits with:
> alloc: invalid block: 0xa08acb4: a 74 0
...
some followup info:
- This is with matplotlib 0.87.5, but also seen with 0.87.4 and 0.87.2
- This is with ActiveState Tcl/Tk 8.4.11, not 8.4.13 as I originally said

I tried the test again with "debug-annoying" level logging. Before 
running it I:
- deleted everything in ~/.matplotlibrc.
- .../site-packages/matplotlib/mpl-data to ~/.matplotlibrc and stripped 
out all but  a few options (something I'd never tried before, but I'm 
hoping it'll leave me a matplotlibrc file that is compatible with future 
versions of matplotlib, for a change):

backend      : TkAgg
numerix      : numarray 
interactive  : False
verbose.level  : debug-annoying
verbose.fileo  : sys.stdout

I then ran the test:
>>> from pylab import *
>>> plot([1,2,3,4])
>>> show()

The crash happens after the show():
...
RendererAgg.draw_text
RendererAgg._get_agg_font
alloc: invalid block: 0xa08acb4: a 74 0

The full log is here:
<http://rowen.astro.washington.edu/mpl.txt>

One other thing that may be relevant (and is in the log): whenever I run 
matplotlib for the first time after deleting the font cache, I always 
get a spate of warnings like this:
455: UserWarning: Could not open font file 
/System/Library/Fonts/LastResort.dfont

-- Russell