4 ms·

Just tried with iOS 8.1 SDK. It seems that <mach/mach_vm.h> is not supported on iOS. So far, I failed to reproduce the crash/kernel panic with code snippet from

by ttflee 12y ago

Just tried with iOS 8.1 SDK. It seems that <mach/mach_vm.h> is not supported on iOS. So far, I failed to reproduce the crash/kernel panic with code snippet from the original post.

LeoNatan25 12y ago
It is supported, just need an expanded SDK or you can provide the OS X variant of mach_vm.h and import that.
- ttflee 12y ago
  But clang did not treat it as an error when I commented the #include line. I have no idea if it was actually dynamically linked.
  - _wmd 12y ago
    Includes don't control linking, and traditional C did not require function prototypes, so most compilers (in non-C++ mode at least) will happily compile calls to unknown functions, it just assumes a default signature.
    - ttflee 12y ago
      I know that and mach_* are supposed to be dynamically loaded. But what I failed to get is to reproduce the kernel panic, not to build and run on my iPhone 5. By now that piece of code could run but only result in normal crash, not kernel panic.
oleavr 12y ago
The mach_vm.h header has been replaced with a dummy version in recent iOS SDKs, so you’ll have to copy it from your OS X SDK and adjust the include. Just updated the post, and also removed VM_PROT_EXECUTE from the mach_vm_protect call for compatibility with non-jailbroken devices.