XCODE 12 REVIEW CODE

It seems that Xcode 15 is not correctly including the embedded Swift libraries for use on macOS versions older than 10.15. On 10.13 it doesn't even launch: dyld: Library not loaded: from: /Users/csrstka/Desktop/crashtest What's more, I decided to spin up a macOS 10.13 VM in UTM to see what would happen there. I've reproduced the bug in Xcode 15 beta 5, beta 6, and beta 7. Note that similar behavior occurs if you set the dictionary after initialization, like so: Now copy the resulting binary to a Mac running macOS 10.14.6 and run it.Ĭrashexample(1527,0x108e5b5c0) malloc: *** error for object 0x7fffa6fbf6e0: pointer being freed was not allocatedĬrashexample(1527,0x108e5b5c0) malloc: *** set a breakpoint in malloc_error_break to debugĪnd the backtrace in the crash report looks like: `swiftc -O -target x86_64-apple-macos10.13 crashexample.swift` Then compile it with the following command: Print('created object') // will never be logged

XCODE 12 REVIEW CODE

If a class contains a dictionary `var`, and the project is comp … iled for backwards compatibility to macOS 10.13, and the resulting code is run on macOS 10.14.6, a crash will occur when the dictionary variable is set.Ĭopy the following code to a file named `crashexample.swift`:

Xcode 12 review