bug#15364: 24.3; git emacs segfault on loading local wubi phrases

[Eric Abrahamsen]

On 09/13/13 17:43 PM, Eli Zaretskii wrote:
>> From: Eric Abrahamsen <eric@ericabrahamsen.net>
>> Cc: 15364@debbugs.gnu.org
>> Date: Fri, 13 Sep 2013 17:22:11 +0800
>> 
>> It seems the problem is more complicated. You're supposed to put your
>> custom phrases in a plain text file, one phrase per line, which file is
>> pointed to by the variable wubi-phrases-file. When
>> `wubi-load-local-phrases' is called, it turns that text file into an .el
>> file, the name of which is pointed to by wubi-phrases-file-el. So far as
>> I can tell, emacs segfaults when these two files have the same name, ie:
>> 
>> (setq wubi-phrases-file "~/.emacs.d/my-wubi-phrases.txt")
>> (setq wubi-phrases-file-el "~/.emacs.d/my-wubi-phrases.el")
>
> But the name is not the same: the extensions of the files are
> different.  So I don't think it's unreasonable to expect this to work.

Sure, obviously the names aren't exactly the same, but the fact is that
it blew up when I eval'd the above two sexps and then called
`wubi-load-local-phrases'. If I changed the name of the .el file, or
eval'd the second sexp but not the first (ie set wubi-phrases-file-el
but left wubi-phrases-file as its default), it loaded okay. Beats me!

>> I moved "my-wubi-phrases.el" to "my-wubi-phrases-short.el", to start
>> testing if a shorter file would prevent the crash, only to find that all
>> it took was re-naming the file to allow it to load safely.
>> 
>> So now it seems highly likely that the crash I thought I was
>> experiencing isn't at all the one I'm actually experiencing. I'll
>> happily do whatever's necessary, but I have the sense I'm barking up the
>> wrong tree.
>
> It would help if you report the steps necessary to reproduce the
> problem, starting with "emacs -Q".  If that requires a non-empty
> phrase file, please post a minimal file that can be used to reproduce
> the crash.
>
> Thanks for the other info.

Yup, you'll need a file. I've done a little testing. It looks like
everything loads fine until the file reaches 4095 lines. I'm attaching
the txt file, of exactly 4095 lines, and a test file, to be run as emacs
-Q -l wubi-test.el (the paths need to be changed). Running that test
will produce the .el file, then attempt to load the phrases, and then in
my case segfault.

Hope that's enough!

Eric

wubi-test.el
Description: application/emacs-lisp

my-wubi-phrases-test.txt
Description: Text document