^~
In file included from /usr/include/stdio.h:862:0,
                 from ./libavutil/common.h:38,
                 from ./libavutil/avutil.h:301,
                 from libavformat/dashenc.c:31:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:64:10: note: '__builtin___snprintf_chk' output between 1 and 2047 bytes into a destination of size 1024
   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        __bos (__s), __fmt, __va_arg_pack ());
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavformat/mlvdec.c: In function 'read_header':
libavformat/mlvdec.c:364:63: warning: '__builtin___snprintf_chk' output may be truncated before the last format character [-Wformat-truncation=]
             snprintf(filename + strlen(filename) - 2, 3, '%02d', i);
                                                               ^
In file included from /usr/include/stdio.h:862:0,
                 from libavformat/avformat.h:310,
                 from libavformat/mlvdec.c:33:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:64:10: note: '__builtin___snprintf_chk' output between 3 and 4 bytes into a destination of size 3
   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        __bos (__s), __fmt, __va_arg_pack ());
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavformat/matroskaenc.c: In function 'mkv_write_trailer':
libavformat/matroskaenc.c:3307:79: warning: '%012.9f' directive output may be truncated writing between 12 and 320 bytes into a region of size between 8 and 14 [-Wformat-truncation=]
                 snprintf(duration_string, sizeof(duration_string), '%02d:%02d:%012.9f',
                                                                               ^~~~~~~
In file included from /usr/include/stdio.h:862:0,
                 from libavformat/avio.h:30,
                 from libavformat/av1.h:26,
                 from libavformat/matroskaenc.c:26:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:64:10: note: '__builtin___snprintf_chk' output between 19 and 333 bytes into a destination of size 20
   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        __bos (__s), __fmt, __va_arg_pack ());
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavformat/movenc.c: In function 'mov_flush_fragment':
libavformat/movenc.c:1218:8: warning: assuming signed overflow does not occur when assuming that (X - c) > X is always false [-Wstrict-overflow]
     if (cluster_idx >= track->entry)
        ^
libavformat/smoothstreamingenc.c: In function 'ism_flush':
libavformat/smoothstreamingenc.c:510:49: warning: '/temp' directive output may be truncated writing 5 bytes into a region of size between 1 and 1024 [-Wformat-truncation=]
         snprintf(filename, sizeof(filename), '%s/temp', os->dirname);
                                                 ^~~~~
In file included from /usr/include/stdio.h:862:0,
                 from libavformat/avformat.h:310,
                 from libavformat/smoothstreamingenc.c:27:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:64:10: note: '__builtin___snprintf_chk' output between 6 and 1029 bytes into a destination of size 1024
   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        __bos (__s), __fmt, __va_arg_pack ());
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavformat/smoothstreamingenc.c:545:63: warning: '/FragmentInfo(' directive output may be truncated writing 14 bytes into a region of size between 1 and 1024 [-Wformat-truncation=]
         snprintf(header_filename, sizeof(header_filename), '%s/FragmentInfo(%s=%'PRIu64')', os->dirname, os->stream_type_tag, start_ts);
                                                               ^~~~~~~~~~~~~~
In file included from /usr/include/stdio.h:862:0,
                 from libavformat/avformat.h:310,
                 from libavformat/smoothstreamingenc.c:27:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:64:10: note: '__builtin___snprintf_chk' output 18 or more bytes (assuming 1041) into a destination of size 1024
   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        __bos (__s), __fmt, __va_arg_pack ());
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavformat/smoothstreamingenc.c:546:63: warning: '/Fragments(' directive output may be truncated writing 11 bytes into a region of size between 1 and 1024 [-Wformat-truncation=]
         snprintf(target_filename, sizeof(target_filename), '%s/Fragments(%s=%'PRIu64')', os->dirname, os->stream_type_tag, start_ts);
                                                               ^~~~~~~~~~~
In file included from /usr/include/stdio.h:862:0,
                 from libavformat/avformat.h:310,
                 from libavformat/smoothstreamingenc.c:27:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:64:10: note: '__builtin___snprintf_chk' output 15 or more bytes (assuming 1038) into a destination of size 1024
   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        __bos (__s), __fmt, __va_arg_pack ());
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavformat/smoothstreamingenc.c:538:53: warning: '/temp' directive output may be truncated writing 5 bytes into a region of size between 1 and 1024 [-Wformat-truncation=]
             snprintf(filename, sizeof(filename), '%s/temp', os->dirname);
                                                     ^~~~~
In file included from /usr/include/stdio.h:862:0,
                 from libavformat/avformat.h:310,
                 from libavformat/smoothstreamingenc.c:27:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:64:10: note: '__builtin___snprintf_chk' output between 6 and 1029 bytes into a destination of size 1024
   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        __bos (__s), __fmt, __va_arg_pack ());
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavformat/vorbiscomment.c: In function 'ff_vorbiscomment_write':
libavformat/vorbiscomment.c:103:63: warning: '%03d' directive output may be truncated writing between 3 and 10 bytes into a region of size 4 [-Wformat-truncation=]
             snprintf(chapter_number, sizeof(chapter_number), '%03d', i);
                                                               ^~~~
libavformat/vorbiscomment.c:103:62: note: directive argument in the range [0, 2147483647]
             snprintf(chapter_number, sizeof(chapter_number), '%03d', i);
                                                              ^~~~~~
In file included from /usr/include/stdio.h:862:0,
                 from libavformat/avio.h:30,
                 from libavformat/vorbiscomment.c:22:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:64:10: note: '__builtin___snprintf_chk' output between 4 and 11 bytes into a destination of size 4
   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        __bos (__s), __fmt, __va_arg_pack ());
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavformat/vorbiscomment.c:104:69: warning: '%02d' directive output may be truncated writing between 2 and 3 bytes into a region of size between 1 and 7 [-Wformat-truncation=]
             snprintf(chapter_time, sizeof(chapter_time), '%02d:%02d:%02d.%03d', h, m, s, ms);
                                                                     ^~~~
libavformat/vorbiscomment.c:104:58: note: directive argument in the range [-59, 59]
             snprintf(chapter_time, sizeof(chapter_time), '%02d:%02d:%02d.%03d', h, m, s, ms);
                                                          ^~~~~~~~~~~~~~~~~~~~~
libavformat/vorbiscomment.c:104:58: note: directive argument in the range [-999, 999]
In file included from /usr/include/stdio.h:862:0,
                 from libavformat/avio.h:30,
                 from libavformat/vorbiscomment.c:22:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:64:10: note: '__builtin___snprintf_chk' output between 13 and 21 bytes into a destination of size 13
   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        __bos (__s), __fmt, __va_arg_pack ());
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavcodec/aac/aacdec_lpd.c: In function 'parse_codebook_idx':
libavcodec/aac/aacdec_lpd.c:102:9: warning: variable 'idx' set but not used [-Wunused-but-set-variable]
     int idx, n, nk;
         ^~~
libavcodec/aac/aacdec_lpd.c: In function 'ff_aac_ldp_parse_channel_stream':
libavcodec/aac/aacdec_lpd.c:148:9: warning: variable 'first_tcx_flag' set but not used [-Wunused-but-set-variable]
     int first_tcx_flag;
         ^~~~~~~~~~~~~~
libavcodec/aac/aacdec.c: In function 'ff_aac_output_configure':
libavcodec/aac/aacdec.c:332:47: warning: array subscript is above array bounds [-Warray-bounds]
             ff_aac_channel_map[layer][pos - 1][j+1] == AV_CHAN_NONE)
             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
libavcodec/aac/aacdec.c:332:47: warning: array subscript is above array bounds [-Warray-bounds]
             ff_aac_channel_map[layer][pos - 1][j+1] == AV_CHAN_NONE)
             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
In file included from libavcodec/aacsbr.c:383:0:
libavcodec/aacsbr_template.c: In function 'ff_aac_sbr_decode_usac_data':
libavcodec/aacsbr_template.c:1271:5: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
     int start = get_bits_count(gb);
     ^~~
libavcodec/aacsbr_template.c:1271:9: warning: unused variable 'start' [-Wunused-variable]
     int start = get_bits_count(gb);
         ^~~~~
libavcodec/dvenc.c: In function 'dv_encode_video_segment':
libavcodec/dvenc.c:817:81: warning: array subscript is above array bounds [-Warray-bounds]
                                     for (a2 = a + 1; b->next[k] >= mb_area_start[a2 + 1]; a2++)
                                                                    ~~~~~~~~~~~~~^~~~~~~~
libavcodec/dvenc.c:817:81: warning: array subscript is above array bounds [-Warray-bounds]
libavcodec/mobiclip.c: In function 'add_coefficients':
libavcodec/mobiclip.c:469:24: warning: array subscript is above array bounds [-Warray-bounds]
             int a = mat[x * size + y];
                     ~~~^~~~~~~~~~~~~~
libavcodec/mobiclip.c:473:16: warning: array subscript is above array bounds [-Warray-bounds]
             mat[x * size + y] = b;
             ~~~^~~~~~~~~~~~~~
libavcodec/mobiclip.c:469:24: warning: array subscript is above array bounds [-Warray-bounds]
             int a = mat[x * size + y];
                     ~~~^~~~~~~~~~~~~~
libavcodec/mobiclip.c:473:16: warning: array subscript is above array bounds [-Warray-bounds]
             mat[x * size + y] = b;
             ~~~^~~~~~~~~~~~~~
libavcodec/mobiclip.c:469:24: warning: array subscript is above array bounds [-Warray-bounds]
             int a = mat[x * size + y];
                     ~~~^~~~~~~~~~~~~~
libavcodec/mobiclip.c:473:16: warning: array subscript is above array bounds [-Warray-bounds]
             mat[x * size + y] = b;
             ~~~^~~~~~~~~~~~~~
libavcodec/mobiclip.c:469:24: warning: array subscript is above array bounds [-Warray-bounds]
             int a = mat[x * size + y];
                     ~~~^~~~~~~~~~~~~~
libavcodec/mobiclip.c:473:16: warning: array subscript is above array bounds [-Warray-bounds]
             mat[x * size + y] = b;
             ~~~^~~~~~~~~~~~~~
libavcodec/mobiclip.c:469:24: warning: array subscript is above array bounds [-Warray-bounds]
             int a = mat[x * size + y];
                     ~~~^~~~~~~~~~~~~~
libavcodec/mobiclip.c:473:16: warning: array subscript is above array bounds [-Warray-bounds]
             mat[x * size + y] = b;
             ~~~^~~~~~~~~~~~~~
libavcodec/mobiclip.c:469:24: warning: array subscript is above array bounds [-Warray-bounds]
             int a = mat[x * size + y];
                     ~~~^~~~~~~~~~~~~~
libavcodec/mobiclip.c:473:16: warning: array subscript is above array bounds [-Warray-bounds]
             mat[x * size + y] = b;
             ~~~^~~~~~~~~~~~~~
libavcodec/mobiclip.c:469:24: warning: array subscript is above array bounds [-Warray-bounds]
             int a = mat[x * size + y];
                     ~~~^~~~~~~~~~~~~~
libavcodec/mobiclip.c:473:16: warning: array subscript is above array bounds [-Warray-bounds]
             mat[x * size + y] = b;
             ~~~^~~~~~~~~~~~~~
libavcodec/mobiclip.c:469:24: warning: array subscript is above array bounds [-Warray-bounds]
             int a = mat[x * size + y];
                     ~~~^~~~~~~~~~~~~~
libavcodec/mobiclip.c:473:16: warning: array subscript is above array bounds [-Warray-bounds]
             mat[x * size + y] = b;
             ~~~^~~~~~~~~~~~~~
libavutil/file_open.c: In function 'avpriv_tempfile':
libavutil/file_open.c:140:25: error: 'len' undeclared (first use in this function); did you mean 'link'?
     snprintf(*filename, len, '/tmp/%sXXXXXX', prefix);
                         ^~~
                         link
libavutil/file_open.c:140:25: note: each undeclared identifier is reported only once for each function it appears in
make: *** [libavutil/file_open.o] Error 1
make: *** Waiting for unfinished jobs....