Bug #2480

/usr/bin/dialog buffer size too small

Added by isenmann about 7 years ago. Updated about 7 years ago.

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Running "make config" in /usr/dports/print/ghostscript9 crashes the dialog program.

Increasing the MAX_LEN value in /usr/src/gnu/lib/libdialog/dialog.h:78 from 2k to 20k "fixes" this issue.

The output size (using the default options in the above example) is about 3.7k.



Updated by memmerto about 7 years ago

As far as I can tell, this should cause similar problems on FreeBSD whose dialog also has MAX_LEN 2048.

Suggest two changes:
- work with upstream maintainer to increase MAX_LEN (4k is sufficient, but a higher limit may be useful)
- merge up to FreeBSD r224014 which is upstream 1.1-20110707


Updated by isenmann about 7 years ago

Hmm wonder, why I haven't seen this on FreeBSD-9.1?

Looks like there are two different versions:
/usr/src/gnu/lib/libodialog/dialog.h:#define MAX_LEN 4096
/usr/src/contrib/dialog/dialog.h:#define MAX_LEN 2048

The output of "/usr/bin/dialog --help" starts with:
cdialog (ComeOn Dialog!) version 1.1-20100428
Copyright 2000-2008,2011 Thomas E. Dickey

That seems to be the version from contrib, and AFAIKS this
versions has no problem with 3.7k output.


Updated by memmerto about 7 years ago

Looks like we don't need an upstream fix, but rather just an update to a new version.


Updated by marino about 7 years ago

  • Assignee set to dragonflybsd1

Correct, our dialog is ancient.

I saw the ghostscript crash as well.

Updating libdialog was on my mid-term to-do list, but it's nice to have a bug tracking this.
I'll take the ticket.


Updated by marino about 7 years ago

While waiting for new libdialog, MAX_LEN has been increased on old one:


Updated by marino about 7 years ago

  • Status changed from New to Closed

pavalos has completed the libdialog upgrade. Thanks Peter!

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