Hi, so I moved along with this problem, analyzing the core dump. Unfortunately, I did not have the symbols of glib (it seems that 'brew install --test glib' did not build a debug version of glib despite what the doc says). But I could disassemble the faulty function :
Dump of assembler code for function thread_memory_from_self: 0x06284401 <thread_memory_from_self+0>: push %ebp 0x06284402 <thread_memory_from_self+1>: mov %esp,%ebp 0x06284404 <thread_memory_from_self+3>: push %ebx 0x06284405 <thread_memory_from_self+4>: push %edi 0x06284406 <thread_memory_from_self+5>: push %esi 0x06284407 <thread_memory_from_self+6>: sub $0x1c,%esp 0x0628440a <thread_memory_from_self+9>: call 0x628440f <thread_memory_from_self+14> 0x0628440f <thread_memory_from_self+14>: pop %ebx 0x06284410 <thread_memory_from_self+15>: lea 0xa41b9(%ebx),%edi 0x06284416 <thread_memory_from_self+21>: mov %edi,(%esp) 0x06284419 <thread_memory_from_self+24>: call 0x62a596d <g_private_get> 0x0628441e <thread_memory_from_self+29>: mov %eax,%esi 0x06284420 <thread_memory_from_self+31>: test %esi,%esi 0x06284422 <thread_memory_from_self+33>: je 0x628442e <thread_memory_from_self+45> 0x06284424 <thread_memory_from_self+35>: mov %esi,%eax 0x06284426 <thread_memory_from_self+37>: add $0x1c,%esp 0x06284429 <thread_memory_from_self+40>: pop %esi 0x0628442a <thread_memory_from_self+41>: pop %edi 0x0628442b <thread_memory_from_self+42>: pop %ebx 0x0628442c <thread_memory_from_self+43>: pop %ebp 0x0628442d <thread_memory_from_self+44>: ret 0x0628442e <thread_memory_from_self+45>: lea 0xa47dd(%ebx),%esi 0x06284434 <thread_memory_from_self+51>: mov %esi,(%esp) 0x06284437 <thread_memory_from_self+54>: call 0x62a5351 <g_mutex_lock> 0x0628443c <thread_memory_from_self+59>: cmpl $0x0,0xa4781(%ebx) 0x06284446 <thread_memory_from_self+69>: je 0x6284488 <thread_memory_from_self+135> 0x06284448 <thread_memory_from_self+71>: mov %esi,(%esp) 0x0628444b <thread_memory_from_self+74>: call 0x62a5402 <g_mutex_unlock> 0x06284450 <thread_memory_from_self+79>: mov 0xa4789(%ebx),%ebx 0x06284456 <thread_memory_from_self+85>: add $0xffffffe8,%ebx 0x06284459 <thread_memory_from_self+88>: shr $0x6,%ebx 0x0628445c <thread_memory_from_self+91>: mov %ebx,%eax 0x0628445e <thread_memory_from_self+93>: shl $0x4,%eax 0x06284461 <thread_memory_from_self+96>: or $0x8,%eax 0x06284464 <thread_memory_from_self+99>: mov %eax,(%esp) 0x06284467 <thread_memory_from_self+102>: call 0x62728c3 <g_malloc0> 0x0628446c <thread_memory_from_self+107>: mov %eax,%esi 0x0628446e <thread_memory_from_self+109>: lea 0x8(%esi),%eax 0x06284471 <thread_memory_from_self+112>: mov %eax,(%esi) 0x06284473 <thread_memory_from_self+114>: lea 0x8(%esi,%ebx,8),%eax 0x06284477 <thread_memory_from_self+118>: mov %eax,0x4(%esi) 0x0628447a <thread_memory_from_self+121>: mov %esi,0x4(%esp) 0x0628447e <thread_memory_from_self+125>: mov %edi,(%esp) 0x06284481 <thread_memory_from_self+128>: call 0x62a5a2f <g_private_set> 0x06284486 <thread_memory_from_self+133>: jmp 0x6284424 <thread_memory_from_self+35> 0x06284488 <thread_memory_from_self+135>: movl $0x1d,(%esp) 0x0628448f <thread_memory_from_self+142>: call 0x62cccac <dyld_stub_sysconf> 0x06284494 <thread_memory_from_self+147>: mov %eax,0xa4781(%ebx) 0x0628449a <thread_memory_from_self+153>: cmp $0x1ff,%eax 0x0628449f <thread_memory_from_self+158>: jbe 0x6284583 <thread_memory_from_self+386> 0x062844a5 <thread_memory_from_self+164>: lea -0x1(%eax),%ecx 0x062844a8 <thread_memory_from_self+167>: test %ecx,%eax 0x062844aa <thread_memory_from_self+169>: jne 0x628458b <thread_memory_from_self+394> 0x062844b0 <thread_memory_from_self+175>: mov 0xa41b5(%ebx),%eax 0x062844b6 <thread_memory_from_self+181>: mov %eax,0xa479d(%ebx) 0x062844bc <thread_memory_from_self+187>: lds (bad),%edi 0x062844bd <thread_memory_from_self+188>: sti 0x062844be <thread_memory_from_self+189>: adc %al,0xa41ad(%ebx) 0x062844c4 <thread_memory_from_self+195>: lds (bad),%edi 0x062844c5 <thread_memory_from_self+196>: sti 0x062844c6 <thread_memory_from_self+197>: adc %eax,0xa4795(%ebx) 0x062844cc <thread_memory_from_self+203>: lds (bad),%edi 0x062844cd <thread_memory_from_self+204>: sti 0x062844ce <thread_memory_from_self+205>: adc %al,0xa41a5(%ebx) 0x062844d4 <thread_memory_from_self+211>: lds (bad),%edi 0x062844d5 <thread_memory_from_self+212>: sti 0x062844d6 <thread_memory_from_self+213>: adc %eax,0xa478d(%ebx) 0x062844dc <thread_memory_from_self+219>: lea 0x5a55e(%ebx),%eax 0x062844e2 <thread_memory_from_self+225>: mov %eax,(%esp) 0x062844e5 <thread_memory_from_self+228>: call 0x62cca0c <dyld_stub_getenv> 0x062844ea <thread_memory_from_self+233>: test %eax,%eax 0x062844ec <thread_memory_from_self+235>: je 0x6284524 <thread_memory_from_self+291> 0x062844ee <thread_memory_from_self+237>: lea 0xa4345(%ebx),%ecx 0x062844f4 <thread_memory_from_self+243>: mov %ecx,0x4(%esp) 0x062844f8 <thread_memory_from_self+247>: mov %eax,(%esp) 0x062844fb <thread_memory_from_self+250>: movl $0x2,0x8(%esp) 0x06284503 <thread_memory_from_self+258>: call 0x626a3b2 <g_parse_debug_string> 0x06284508 <thread_memory_from_self+263>: test $0x1,%al 0x0628450a <thread_memory_from_self+265>: je 0x6284516 <thread_memory_from_self+277> 0x0628450c <thread_memory_from_self+267>: movl $0x1,0xa478d(%ebx) 0x06284516 <thread_memory_from_self+277>: test $0x2,%al 0x06284518 <thread_memory_from_self+279>: je 0x6284524 <thread_memory_from_self+291> 0x0628451a <thread_memory_from_self+281>: movl $0x1,0xa4795(%ebx) 0x06284524 <thread_memory_from_self+291>: mov $0x1000,%ecx 0x06284529 <thread_memory_from_self+296>: mov 0xa4781(%ebx),%eax 0x0628452f <thread_memory_from_self+302>: cmp $0x1000,%eax 0x06284534 <thread_memory_from_self+307>: cmova %eax,%ecx 0x06284537 <thread_memory_from_self+310>: mov $0x2000,%eax 0x0628453c <thread_memory_from_self+315>: cmp $0x2000,%ecx 0x06284542 <thread_memory_from_self+321>: cmova %ecx,%eax 0x06284545 <thread_memory_from_self+324>: mov %eax,0xa4789(%ebx) 0x0628454b <thread_memory_from_self+330>: mov $0x80,%edx 0x06284550 <thread_memory_from_self+335>: cmp $0x80,%ecx 0x06284556 <thread_memory_from_self+341>: cmovb %ecx,%edx 0x06284559 <thread_memory_from_self+344>: mov %edx,0xa4785(%ebx) 0x0628455f <thread_memory_from_self+350>: cmpl $0x0,0xa478d(%ebx) 0x06284569 <thread_memory_from_self+360>: je 0x62845a3 <thread_memory_from_self+418> 0x0628456b <thread_memory_from_self+362>: movl $0x0,0xa47b1(%ebx) 0x06284575 <thread_memory_from_self+372>: movl $0x0,0xa47ad(%ebx) 0x0628457f <thread_memory_from_self+382>: xor %eax,%eax 0x06284581 <thread_memory_from_self+384>: jmp 0x62845fd <thread_memory_from_self+508> 0x06284583 <thread_memory_from_self+386>: lea 0x5a50f(%ebx),%eax 0x06284589 <thread_memory_from_self+392>: jmp 0x6284591 <thread_memory_from_self+400> 0x0628458b <thread_memory_from_self+394>: lea 0x5a533(%ebx),%eax 0x06284591 <thread_memory_from_self+400>: mov %eax,0x4(%esp) 0x06284595 <thread_memory_from_self+404>: lea 0x5a423(%ebx),%eax 0x0628459b <thread_memory_from_self+410>: mov %eax,(%esp) 0x0628459e <thread_memory_from_self+413>: call 0x6285275 <mem_error> 0x062845a3 <thread_memory_from_self+418>: add $0xffffffe8,%eax 0x062845a6 <thread_memory_from_self+421>: shr $0x6,%eax 0x062845a9 <thread_memory_from_self+424>: mov %eax,(%esp) 0x062845ac <thread_memory_from_self+427>: movl $0x4,0x4(%esp) 0x062845b4 <thread_memory_from_self+435>: call 0x6272ae2 <g_malloc0_n> 0x062845b9 <thread_memory_from_self+440>: mov %eax,0xa47b1(%ebx) 0x062845bf <thread_memory_from_self+446>: mov 0xa4789(%ebx),%eax 0x062845c5 <thread_memory_from_self+452>: add $0xffffffe8,%eax 0x062845c8 <thread_memory_from_self+455>: shr $0x6,%eax 0x062845cb <thread_memory_from_self+458>: mov %eax,(%esp) 0x062845ce <thread_memory_from_self+461>: movl $0x4,0x4(%esp) 0x062845d6 <thread_memory_from_self+469>: call 0x6272ae2 <g_malloc0_n> 0x062845db <thread_memory_from_self+474>: mov %eax,0xa47ad(%ebx) 0x062845e1 <thread_memory_from_self+480>: mov 0xa4789(%ebx),%eax 0x062845e7 <thread_memory_from_self+486>: add $0xffffffe8,%eax 0x062845ea <thread_memory_from_self+489>: shr $0x6,%eax 0x062845ed <thread_memory_from_self+492>: mov %eax,(%esp) 0x062845f0 <thread_memory_from_self+495>: movl $0x4,0x4(%esp) 0x062845f8 <thread_memory_from_self+503>: call 0x6272ae2 <g_malloc0_n> 0x062845fd <thread_memory_from_self+508>: mov %eax,0xa47c9(%ebx) 0x06284603 <thread_memory_from_self+514>: lea 0xa47a5(%ebx),%eax 0x06284609 <thread_memory_from_self+520>: mov %eax,(%esp) 0x0628460c <thread_memory_from_self+523>: call 0x62a52c0 <g_mutex_init> 0x06284611 <thread_memory_from_self+528>: movl $0x0,0xa47b5(%ebx) 0x0628461b <thread_memory_from_self+538>: movl $0x7,0xa47b9(%ebx) 0x06284625 <thread_memory_from_self+548>: movl $0x0,0xa47bd(%ebx) 0x0628462f <thread_memory_from_self+558>: lea 0xa47c1(%ebx),%eax 0x06284635 <thread_memory_from_self+564>: mov %eax,(%esp) 0x06284638 <thread_memory_from_self+567>: call 0x62a52c0 <g_mutex_init> 0x0628463d <thread_memory_from_self+572>: movl $0x0,0xa47cd(%ebx) 0x06284647 <thread_memory_from_self+582>: mov 0xa47b9(%ebx),%eax 0x0628464d <thread_memory_from_self+588>: cmp $0x7,%eax 0x06284650 <thread_memory_from_self+591>: jb 0x6284682 <thread_memory_from_self+641> 0x06284652 <thread_memory_from_self+593>: lea -0x18(%ebp),%eax 0x06284655 <thread_memory_from_self+596>: mov %eax,(%esp) 0x06284658 <thread_memory_from_self+599>: call 0x626d044 <g_get_current_time> 0x0628465d <thread_memory_from_self+604>: mov $0x10624dd3,%eax 0x06284662 <thread_memory_from_self+609>: imull -0x14(%ebp) 0x06284665 <thread_memory_from_self+612>: mov %edx,%eax 0x06284667 <thread_memory_from_self+614>: shr $0x1f,%eax 0x0628466a <thread_memory_from_self+617>: sar $0x6,%edx 0x0628466d <thread_memory_from_self+620>: add %eax,%edx 0x0628466f <thread_memory_from_self+622>: imul $0x3e8,-0x18(%ebp),%eax 0x06284676 <thread_memory_from_self+629>: add %edx,%eax 0x06284678 <thread_memory_from_self+631>: mov %eax,0xa47bd(%ebx) 0x0628467e <thread_memory_from_self+637>: xor %eax,%eax 0x06284680 <thread_memory_from_self+639>: jmp 0x6284683 <thread_memory_from_self+642> 0x06284682 <thread_memory_from_self+641>: inc %eax 0x06284683 <thread_memory_from_self+642>: mov %eax,0xa47b9(%ebx) 0x06284689 <thread_memory_from_self+648>: mov 0xa4789(%ebx),%eax 0x0628468f <thread_memory_from_self+654>: add $0xffffffe8,%eax 0x06284692 <thread_memory_from_self+657>: shr $0x3,%eax 0x06284695 <thread_memory_from_self+660>: mov %eax,0xa47a1(%ebx) 0x0628469b <thread_memory_from_self+666>: mov 0xa4791(%ebx),%eax 0x062846a1 <thread_memory_from_self+672>: or 0xa478d(%ebx),%eax 0x062846a7 <thread_memory_from_self+678>: je 0x6284448 <thread_memory_from_self+71> 0x062846ad <thread_memory_from_self+684>: movl $0x0,0xa47a1(%ebx) 0x062846b7 <thread_memory_from_self+694>: jmp 0x6284448 <thread_memory_from_self+71> End of assembler dump. As a reminder, the faulty instruction is on 0 libglib-2.0.0.dylib 0x062cb4bc thread_memory_from_self + 187 and the crash is : Exception Type: EXC_BAD_INSTRUCTION (SIGILL) Exception Codes: 0x0000000000000001, 0x0000000000000000 I'm a bit surprised as it seems that the lds instruction is quite standard. What is strange is the (bad) argument. What do you think ? Thank you Antoine
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