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mirror of https://github.com/RIOT-OS/RIOT.git synced 2025-12-23 13:33:49 +01:00
Marian Buschsieweke abd7205115
sys/net/grnc: fix NULL ptr dereferencing
This bug was spotted by GCC 14.1.0:

    In file included from /home/maribu/Repos/software/RIOT/master/sys/net/gnrc/network_layer/ipv6/nib/_nib-internal.h:27,
                     from /home/maribu/Repos/software/RIOT/master/sys/net/gnrc/network_layer/ipv6/nib/_nib-arsm.h:33,
                     from /home/maribu/Repos/software/RIOT/master/sys/net/gnrc/network_layer/ipv6/nib/_nib-6ln.h:30,
                     from /home/maribu/Repos/software/RIOT/master/sys/net/gnrc/network_layer/ipv6/nib/_nib-router.c:28:
    In function 'bf_isset',
        inlined from '_build_ext_opts' at /home/maribu/Repos/software/RIOT/master/sys/net/gnrc/network_layer/ipv6/nib/_nib-router.c:256:17,
        inlined from '_snd_ra' at /home/maribu/Repos/software/RIOT/master/sys/net/gnrc/network_layer/ipv6/nib/_nib-router.c:368:20,
        inlined from '_snd_rtr_advs' at /home/maribu/Repos/software/RIOT/master/sys/net/gnrc/network_layer/ipv6/nib/_nib-router.c:99:9:
    /home/maribu/Repos/software/RIOT/master/sys/include/bitfield.h:130:18: error: array subscript 0 is outside array bounds of 'uint8_t[0]' {aka 'unsigned char[]'} [-Werror=array-bounds=]
      130 |     return (field[idx / 8] & (1u << (7 - (idx % 8))));
          |             ~~~~~^~~~~~~~~
    In function '_snd_rtr_advs':
    cc1: note: source object is likely at address zero
    cc1: all warnings being treated as errors
2024-05-09 12:03:54 +02:00
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2020-10-23 11:27:48 +02:00