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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - ioctl for request TIOCGWINSZ on STDOUT_FILENO not working on OS X"
href="https://llvm.org/bugs/show_bug.cgi?id=30251">30251</a>
</td>
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<th>Summary</th>
<td>ioctl for request TIOCGWINSZ on STDOUT_FILENO not working on OS X
</td>
</tr>
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<th>Product</th>
<td>lldb
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>Macintosh
</td>
</tr>
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<th>OS</th>
<td>MacOS X
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>All Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>lldb-dev@lists.llvm.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>617283945a@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>When debugging a process in LLDB using the ``process launch -c /bin/sh'', using
ioctl with request TIOCGWINSZ on STDOUT_FILENO always gives the width and
height of the window as zero and zero.
Test program:
#include <unistd.h>
#include <sys/ioctl.h>
#include <stdio.h>
void main(){
struct winsize tty_window_size;
ioctl(STDOUT_FILENO, TIOCGWINSZ, &tty_window_size);
printf("Rows: %i, Cols: %i\n", tty_window_size.ws_row,
tty_window_size.ws_col);
}
When run from terminal:
$ ./test_ioctl
Rows: 24, Cols: 80
$ lldb -v
lldb-320.4.156
$ lldb ./test_ioctl
(lldb) target create "./a.out"
(lldb) process launch -c /bin/sh
Rows: 0, Cols: 0
(lldb) q</pre>
</div>
</p>
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