URL:
<http://savannah.gnu.org/bugs/?32255>
Summary: info crashes if # of rows is very small
Project: texinfo - GNU documentation system
Submitted by: hpreusse
Submitted on: Wed 26 Jan 2011 03:59:07 PM GMT
Category: info
Release: 4.13a
Priority: 5 - Normal
Severity: 3 - Normal
Item Group: bug
Privacy: Public
Open/Closed: Open
Assigned to: None
Discussion Lock: Any
Status: None
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Details:
We got a bug report down here in the DBTS: http://bugs.debian.org/611151
<snip>
This bug is easy to reproduce. Simply run "info" in a terminal, then resize
the terminal to have a height smaller than 6. The info program immediately
exits with a segmentation fault.
The problem is that window.c:window_line_of_point() can return a negative
index. A simple fix is to sanity check the output (patch
attached).
That patch will prevent segmentation faults, but there is still something
wrong with the arithmetic, probably in window_new_screen_size() which is a
mess. Shrinking and enlarging the buffer repeatedly leaves a gap, but that's
the subject for another bug.
<snip>
The submitter provided a patch, which can be found in the bug report (not
tested by me).
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