Apple “Feedback” #12149764. According to man 3 getifaddrs: The ifa_dstaddr field references the destination address on a P2P interface, if one exists, otherwise it contains the broadcast address. In my testing the ifa_dstaddr field is never non-null. I’m not sure I have any suitably configured P2P interfaces, but I definitely have interfaces with broadcast capabilities… Read more
Apple “Feedback” #12149675. Some netmasks returned by getifaddrs have family of AF_INET yet a length less than sizeof(sockaddr_in), e.g. 5, 6, 7, or 8. On macOS Ventura 13.3.1, at least. It looks like it’s actually allocating only eight bytes for the ifa_netmask (not the 16 that is the size of sockaddr_in per MacOSX13.3.sdk/usr/include/netinet/in.h), as it… Read more
Yet another example of a really bizarre macOS bug that’s pretty inexcusable as a test escape, given it occurs with the default installation settings on a completely clean OS install. In short, the Mojave update installer does not work (on High Sierra at least) if you have ‘Optimize Mac Storage’ enabled for iCloud Drive (System… Read more
A diskutil bug unceremoniously erased an entire hard drive of mine a few weeks back. While I was able to successfully (AFAICT) restore the drive’s contents to it from various backups, the erasure gave the drive a new identity (UUID, specifically). The next time Time Machine ran, it compounded the diskutil bug by also unceremoniously… Read more
Note: this guide was written circa macOS 10.13 High Sierra, in 2018. Its accuracy has not been verified for newer macOS releases. Curiously there’s very little information out on the web (at time of writing) on how to create (or expand) a Fusion Drive without erasing its contents first. It’s entirely possible to do so… Read more
This was a fun one. Mail started crashing on launch for absolutely no apparent reason – nothing had changed to its config or similar in a long time. The crash logs were all fingering an identical culprit – -[IMAPTaskManager secondaryIdleMailboxName] called on the wrong GCD queue: Process: Mail [19884] Path: /Applications/Mail.app/Contents/MacOS/Mail Identifier: com.apple.mail Version: 11.3… Read more
I hate this dialog with the fire of a thousand suns. When this appears, it basically means one (or both) of two things: Some application went nuts and chewed through all your memory and/or disk space. macOS got itself into a darkly comical & embarrassing deadlock. Quitting any of the listed applications is rarely the correct… Read more