Snippets for ffmpeg 8.1.2 from Alpine armv7

Sourced from https://build.alpinelinux.org/buildlogs/build-edge-armv7/community/ffmpeg/ffmpeg-8.1.2-r0.log.

• libavutil/hwcontext_vulkan.c:746:23: warning: comparison of unsigned expression in '< 0' is always false [-Wtype-limits]
    746 |     for (int i = 0; i < FF_ARRAY_ELEMS(optional_instance_exts) - 1; i++)
        |                       ^
  

• libavcodec/bsf/extract_extradata.c:374:55: warning: passing argument 2 of 'bytestream2_init_writer' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
    374 |             bytestream2_init_writer(&pb_extradata, nal->data, 0);
        |                                                    ~~~^~~~~~
  

• libavcodec/ffv1enc_vulkan.c:1107:39: warning: format '%zu' expects argument of type 'size_t', but argument 5 has type 'VkDeviceSize' {aka 'long long unsigned int'} [-Wformat=]
   1107 |         av_log(avctx, AV_LOG_WARNING, "Encoding buffer size (%zu) larger "
        |                                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   1108 |                                       "than maximum device allocation (%zu), clipping\n",
   1109 |                maxsize, fv->s.props_11.maxMemoryAllocationSize);
        |                         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        |                                       |
        |                                       VkDeviceSize {aka long long unsigned int}
  

• libavcodec/wmadec.c:524:30: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
    524 |         s->channel_coded[ch] = a;
        |                              ^
  

• libavcodec/ass.c:139:17: warning: argument 2 value '4294967295' exceeds maximum object size 2147483647 [-Walloc-size-larger-than=]
    139 |         rects = av_realloc_array(rects, new_nb, sizeof(*sub->rects));
        |                 ^
  

• /usr/include/fortify/string.h:70:16: warning: '__orig_memmove' writing 24 bytes into a region of size 4 overflows the destination [-Wstringop-overflow=]
     70 |         return __orig_memmove(__d, __s, __n);
        |                ^