Re: X86-64 application fails to load on 2008 MBP
Re: X86-64 application fails to load on 2008 MBP
- Subject: Re: X86-64 application fails to load on 2008 MBP
- From: Antonio Nunes <email@hidden>
- Date: Fri, 12 Apr 2013 07:23:38 +0200
On 8 Apr, 2013, at 20:02 , Wim Lewis <email@hidden> wrote:
>
> On 8 Apr 2013, at 12:48 AM, Antonio Nunes wrote:
>> I've had my application 64-bit only, and out in the wild, for a while now, and it has been functioning reliably. For an upcoming update I added a few static libraries, and now find that, although the app works fine on my 2012 rMBP, it fails to load on my 2008 MBP. The libs I added were all built for 64-bit only, and I've checked with lipo that they are indeed x86-64.
>>
>> Trying to run it on the older machine yields in the following BT:
>>
> [...]
>> Exception Type: EXC_BAD_INSTRUCTION (SIGILL)
>> Exception Codes: 0x0000000000000001, 0x0000000000000000
>>
> [...]
>>
>> Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
>> 0 com.sintraworks.PDF-Nomad 0x00000001048074ea _GLOBAL__I_a + 90
>> 1 dyld 0x00007fff63fd9378 ImageLoaderMachO::doModInitFunctions(ImageLoader::LinkContext const&) + 236
>> 2 dyld 0x00007fff63fd9762 ImageLoaderMachO::doInitialization(ImageLoader::LinkContext const&) + 46
>
> That's dyld calling the static constructors in the "com.sintraworks.PDF-Nomad" bundle. 90 bytes into them, there's an illegal (undefined, unsupported, unimplemented, etc.) machine instruction. Some code uses an illegal instruction as a panic/abort kind of thing (usually after printing a message to the console --- does anything show up on the console?), but I guess it's also possible that the older MBP's processor lacks some insn that clang will generate if you tell it you're targeting newer machines.
Thanks Wim,
Not sure how I missed your answer four days ago.
The console logs this: Job appears to have crashed: Illegal instruction 4
So that confirms what you wrote. I suppose then, that some build setting in one of the libs I built is causing the issue. I'll look into that.
-António
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