Attachment 69950 Details for Bug 57022 – Self-contained example that reproduces the crash

Self-contained example that reproduces the crash

xkb-crash.c (text/plain), 1.67 KB, created by Uli Schlachter on 2012-11-12 17:25:01 UTC

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Creator: Uli Schlachter

Created: 2012-11-12 17:25:01 UTC

Size: 1.67 KB

patch

obsolete

>#include <xkb.h>
>#include <stdlib.h>
>#include <stdio.h>
>
>int main() {
>	xcb_connection_t *connection = xcb_connect(NULL, NULL);
>	xcb_xkb_use_extension_unchecked(connection, XCB_XKB_MAJOR_VERSION, XCB_XKB_MINOR_VERSION);
>
>   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(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(connection, map_cookie, &map_error);
>    if (map_error) {
>        free(map_error);
>        return -1;
>    }
>
>    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);
>    printf("reply %p, map %p, iter %p\n", map_reply, map, iter.data);
>
>    xcb_keycode_t key = 0;
>    while (iter.rem) {
>	    printf("iter.data %p\n", iter.data);
>        if (iter.data) {
>            key = iter.data->keycode; // <----- CRASH
>            xcb_xkb_key_v_mod_map_next(&iter);
>        }
>    }
>
>    return key;
>}

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Attachments on bug 57022: 69950 | 69951

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