[FFmpeg-cvslog] r23764 - trunk/libavformat/mov.c

[Carl Eugen Hoyos]

bcoudurier <subversion <at> mplayerhq.hu> writes:

> -        MOVAtom a = { 0 };
> +        MOVAtom a = { AV_RL32("stsd") };

Using icc 12.0 Beta leads to a segfault now:

(gdb) r -i tests/data/acodec/alac.m4a
FFmpeg version SVN-r25148, Copyright (c) 2000-2010 the FFmpeg developers
  built on Sep 21 2010 00:30:52 with icc 1200
  configuration: --cc=/opt/intel/composerxe-2011.0.048/bin/intel64/icc
  libavutil     50.27. 0 / 50.27. 0
  libavcore      0. 9. 0 /  0. 9. 0
  libavcodec    52.89. 0 / 52.89. 0
  libavformat   52.78. 5 / 52.78. 5
  libavdevice   52. 2. 2 / 52. 2. 2
  libavfilter    1.39. 0 /  1.39. 0
  libswscale     0.11. 0 /  0.11. 0
Program received signal SIGSEGV, Segmentation fault.
mov_read_header (s=0x7fffffffd490, ap=0x7fffffffd9c0) at
libavformat/mov.c:2390
2390        MOVAtom atom = { AV_RL32("root") };
(gdb) bt full
#0  mov_read_header (s=0x7fffffffd490, ap=0x7fffffffd9c0) at
libavformat/mov.c:2390
        mov = 0x154e510
        pb = 0x1556520
        atom = {type = 0, size = 0}
#1  0x00000000004c66b2 in av_open_input_file (ic_ptr=0x7fffffffd490,
filename=0x7fffffffd9c0 "", fmt=0x0, buf_size=22340880, ap=0x78) at
libavformat/utils.c:607
        probe_data = {filename = 0x7fffffffe27b
"tests/data/acodec/alac.m4a", buf = 0x0, buf_size = 0}
        pb = 0x1556520
        logctx = 0x154d470
#2  0x0000000000412ca2 in opt_input_file (filename=0x7fffffffd490 "") at
ffmpeg.c:3172
        ic = 0x154d470
        params = {time_base = {num = 0, den = 0}, sample_rate = 44100,
channels = 1, width = 0, height = 0, pix_fmt = PIX_FMT_NONE, channel = 0,
standard = 0x0, mpeg2ts_raw = 0, mpeg2ts_compute_pcr = 0, initial_pause = 0,
          prealloced_context = 1, video_codec_id = CODEC_ID_NONE,
audio_codec_id = CODEC_ID_NONE}
        file_iformat = 0x0
        rfps = 0
        rfps_base = -7557
        timestamp = 0
#3  0x000000000041c661 in parse_options (argc=-11120, argv=0x7fffffffd9c0,
options=0x0, parse_arg_function=0x154e510) at cmdutils.c:179
        bool_val = 114
        opt = 0x78 <Address 0x78 out of bounds>
        arg = 0x154e510 ""
        po = 0x0
#4  0x0000000000405265 in main (argc=-11120, argv=0x7fffffffd9c0) at
ffmpeg.c:4325
        ti = 5
(gdb) disass $pc-47 $pc+32
Dump of assembler code from 0x470fea to 0x471039:
0x0000000000470fea <mov_read_header+0>: push   %r13
0x0000000000470fec <mov_read_header+2>: push   %r14
0x0000000000470fee <mov_read_header+4>: push   %r15
0x0000000000470ff0 <mov_read_header+6>: push   %rbx
0x0000000000470ff1 <mov_read_header+7>: sub    $0x18,%rsp
0x0000000000470ff5 <mov_read_header+11>:        mov    %rdi,%r14
0x0000000000470ff8 <mov_read_header+14>:        mov    $0x0,%rax
0x0000000000471002 <mov_read_header+24>:        lea    (%rsp),%rdi
0x0000000000471006 <mov_read_header+28>:        stos   %rax,%es:(%rdi)
0x0000000000471008 <mov_read_header+30>:        stos   %rax,%es:(%rdi)
0x000000000047100a <mov_read_header+32>:        movsbl 0x6fb0b7(%rip),%eax     
  # 0xb6c0c8
0x0000000000471011 <mov_read_header+39>:        mov    0x18(%r14),%r13
0x0000000000471015 <mov_read_header+43>:        mov    0x20(%r14),%rbx
0x0000000000471019 <mov_read_header+47>:        mov    (%rax),%edx
0x000000000047101b <mov_read_header+49>:        mov    %r14,0x0(%r13)
0x000000000047101f <mov_read_header+53>:        mov    %edx,(%rsp)
0x0000000000471022 <mov_read_header+56>:        cmpl   $0x0,0x54(%rbx)
0x0000000000471026 <mov_read_header+60>:        jne    0x471037
<mov_read_header+77>
0x0000000000471028 <mov_read_header+62>:        mov    %rbx,%rdi
0x000000000047102b <mov_read_header+65>:        callq  0x43ab50 <url_fsize>
0x0000000000471030 <mov_read_header+70>:        mov    %rax,0x8(%rsp)
0x0000000000471035 <mov_read_header+75>:        jmp    0x471046
<mov_read_header+92>
0x0000000000471037 <mov_read_header+77>:      mov    $0x7fffffffffffffff,%rax
End of assembler dump.
(gdb) info registers
rax            0x72     114
rbx            0x1556520        22373664
rcx            0x154e510        22340880
rdx            0x0      0
rsi            0x7fffffffd9c0   140737488345536
rdi            0x7fffffffd490   140737488344208
rbp            0x7fffffffe27b   0x7fffffffe27b
rsp            0x7fffffffd480   0x7fffffffd480
r8             0x78     120
r9             0xb1f611 11662865
r10            0x0      0
r11            0xb1f332 11662130
r12            0x7fffffffda00   140737488345600
r13            0x154e510        22340880
r14            0x154d470        22336624
r15            0x7fffffffd9c0   140737488345536
rip            0x471019 0x471019 <mov_read_header+47>
eflags         0x10202  [ IF RF ]
cs             0x33     51
ss             0x2b     43
ds             0x0      0
es             0x0      0
fs             0x0      0
gs             0x0      0
fctrl          0x37f    895
fstat          0x0      0
ftag           0xffff   65535
fiseg          0x0      0
fioff          0x0      0
foseg          0x0      0
fooff          0x0      0
fop            0x0      0
mxcsr          0x9fe4   [ ZE PE DAZ IM DM ZM OM UM PM FZ ]

I opened an Intel issue report, but is there any chance that is is not the
compilers fault?

Carl Eugen