[cfe-dev] cmus compiled with clang crashes with sigill

[Gregory Petrosyan]

Hello list,

cmus console music player (from
git://github.com/JasonWoof/cmus-unofficial.git) crashes at startup when
compiled with clang. Some gdb info:

    (gdb) run
    Starting program: /home/gregory/software/cmus/cmus
    [Thread debugging using libthread_db enabled]
    [New Thread 0xb7e536c0 (LWP 11351)]
    [New Thread 0xb6f8fb90 (LWP 11354)]
    [New Thread 0xb678eb90 (LWP 11355)]
    [New Thread 0xb5f8db90 (LWP 11356)]

    Program received signal SIGILL, Illegal instruction.
    [Switching to Thread 0xb7e536c0 (LWP 11351)]
    set_replaygain_preamp () at options.c:332
    332     val = strtod(buf, &end);
    Current language:  auto; currently minimal

    (gdb) disassemble
    Dump of assembler code for function set_replaygain_preamp:
    0x08061200 <set_replaygain_preamp+0>:   push   %ebp
    0x08061201 <set_replaygain_preamp+1>:   mov    %esp,%ebp
    0x08061203 <set_replaygain_preamp+3>:   push   %esi
    0x08061204 <set_replaygain_preamp+4>:   sub    $0x14,%esp
    0x08061207 <set_replaygain_preamp+7>:   lea    -0x8(%ebp),%eax
    0x0806120a <set_replaygain_preamp+10>:  mov    %eax,0x4(%esp)
    0x0806120e <set_replaygain_preamp+14>:  mov    0xc(%ebp),%esi
    0x08061211 <set_replaygain_preamp+17>:  mov    %esi,(%esp)
    0x08061214 <set_replaygain_preamp+20>:  call   0x804f238 <strtod at plt>
    0x08061219 <set_replaygain_preamp+25>:  fstpl  -0x10(%ebp)
    0x0806121c <set_replaygain_preamp+28>:  cmp    %esi,-0x8(%ebp)
    0x0806121f <set_replaygain_preamp+31>:  jne    0x8061233
<set_replaygain_preamp+51>
    0x08061221 <set_replaygain_preamp+33>:  movl   $0x80724d0,(%esp)
    0x08061228 <set_replaygain_preamp+40>:  call   0x8069750 <error_msg>
    0x0806122d <set_replaygain_preamp+45>:  add    $0x14,%esp
    0x08061230 <set_replaygain_preamp+48>:  pop    %esi
    0x08061231 <set_replaygain_preamp+49>:  pop    %ebp
    0x08061232 <set_replaygain_preamp+50>:  ret
    0x08061233 <set_replaygain_preamp+51>:  movsd  -0x10(%ebp),%xmm0
    0x08061238 <set_replaygain_preamp+56>:  movsd  %xmm0,(%esp)
    0x0806123d <set_replaygain_preamp+61>:  call   0x8064660
<player_set_rg_preamp>
    0x08061242 <set_replaygain_preamp+66>:  jmp    0x806122d
<set_replaygain_preamp+45>
    End of assembler dump.

    (gdb) disassemble $pc $pc+1
    Dump of assembler code from 0x8061233 to 0x8061234:
    0x08061233 <set_replaygain_preamp+51>:  movsd  -0x10(%ebp),%xmm0
    End of assembler dump.

    (gdb) info registers
    eax            0x40180000   1075314688
    ecx            0xbfe704dc   -1075378980
    edx            0x80000  524288
    ebx            0x806e2b7    134668983
    esp            0xbfe70520   0xbfe70520
    ebp            0xbfe70538   0xbfe70538
    esi            0x82b6d7a    137063802
    edi            0x3  3
    eip            0x8061233    0x8061233 <set_replaygain_preamp+51>
    eflags         0x10212  [ AF IF RF ]
    cs             0x73 115
    ss             0x7b 123
    ds             0x7b 123
    es             0x7b 123
    fs             0x0  0
    gs             0x33 51

Can anybody please explain me what's going on?

        Gregory