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<base href="https://bugs.freedesktop.org/" />
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<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - xkb crash when iterating xcb_xkb_get_map() data."
href="https://bugs.freedesktop.org/show_bug.cgi?id=57022">57022</a>
</td>
</tr>
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<th>Assignee</th>
<td>xcb@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>xkb crash when iterating xcb_xkb_get_map() data.
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>xcb@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Reporter</th>
<td>gatis.paeglis@digia.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Component</th>
<td>Library
</td>
</tr>
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<th>Product</th>
<td>XCB
</td>
</tr></table>
<p>
<div>
<pre>Fallowing example always crashes when trying to read data returned from
xcb_xkb_get_map(). Tested with both real and virtual modifiers, unable to read
keycodes.
xcb_xkb_get_map_cookie_t map_cookie;
xcb_xkb_get_map_reply_t *map_reply;
xcb_generic_error_t *map_error = 0;
map_cookie = xcb_xkb_get_map(xcb_connection(),
XCB_XKB_ID_USE_CORE_KBD,
XCB_XKB_MAP_PART_VIRTUAL_MOD_MAP |
XCB_XKB_MAP_PART_KEY_TYPES |
XCB_XKB_MAP_PART_KEY_SYMS |
XCB_XKB_MAP_PART_EXPLICIT_COMPONENTS |
XCB_XKB_MAP_PART_KEY_ACTIONS |
XCB_XKB_MAP_PART_KEY_BEHAVIORS |
XCB_XKB_MAP_PART_VIRTUAL_MODS |
XCB_XKB_MAP_PART_MODIFIER_MAP,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0); // hmm
map_reply = xcb_xkb_get_map_reply(xcb_connection(), map_cookie,
&map_error);
if (map_error) {
free(map_error);
return;
}
const xcb_xkb_get_map_map_t *map = (xcb_xkb_get_map_map_t
*)xcb_xkb_get_map_map(map_reply);
xcb_xkb_key_v_mod_map_iterator_t iter =
xcb_xkb_get_map_map_vmodmap_rtrn_iterator(map_reply, map);
xcb_keycode_t key = 0;
while (iter.rem) {
if (iter.data) {
key = iter.data->keycode; // <----- CRASH
xcb_xkb_key_v_mod_map_next(&iter);
}
}</pre>
</div>
</p>
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