selftests/bpf: Silence array bounds warning in global_map_resize

When compiling BPF selftests with -O2, GCC reports an array bounds
violation warning in global_map_resize test:

    In function ‘global_map_resize_bss_subtest’,
        inlined from ‘test_global_map_resize’ at /bpf-next/tools/testing/selftests/bpf/prog_tests/global_map_resize.c:228:3:
    /bpf-next/tools/testing/selftests/bpf/prog_tests/global_map_resize.c:64:33: error: array subscript 1 is above array bounds of ‘int[1]’ [-Werror=array-bounds=]
       64 |                 skel->bss->array[i] = 1;
          |                 ~~~~~~~~~~~~~~~~^~~
    In file included from /bpf-next/tools/testing/selftests/bpf/prog_tests/global_map_resize.c:6:
    ./test_global_map_resize.skel.h: In function ‘test_global_map_resize’:
    ./test_global_map_resize.skel.h:44:21: note: while referencing ‘array’
       44 |                 int array[1];
          |                     ^~~~~

This is a false positive because `array` (a BPF map) has been resized
from within the BPF program. GCC doesn't know that so let us silence the
warning by accessing the array via a plain pointer.

Fixes: 08b089567573 ("libbpf: Selftests for resizing datasec maps")
Signed-off-by: Viktor Malik <vmalik@redhat.com>
Link: https://lore.kernel.org/bpf/57765bc465a27923c3c093eba222cc24d08d8c40.1784112948.git.vmalik@redhat.com
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>

0 files changed, 0 insertions, 0 deletions