When running GHCi (Haskell REPL) , I receive a weird warning/message in the Terminal [duplicate]
I get the below error message when I run git for the first time after a reboot:
objc[728]: Class AMSupportURLConnectionDelegate is implemented in both ?? (0x1eff3a7a0) and ?? (0x1188402b8). One of the two will be used. Which one is undefined.
objc[728]: Class AMSupportURLSession is implemented in both ?? (0x1eff3a7f0) and ?? (0x118840308). One of the two will be used. Which one is undefined.
It doesn't happen with other commands like go. Any idea what it means?
This is on a new M1 MBA.
I encountered the same problem. I installed Xcode, and installed "git" on "brew", I uninstalled "git" on "brew" and it solved the problem for now, no more errors.
It means two symbols are defined twice in the git program that’s first in your path (or that you call by a full path).
You can ignore that message 99.9% of the time. It’s there for the devlopers to clean up since there are two definitions of the same function / library.
This is only a problem if all of the below are satisfied:
- The functions are actually different and not just duplicated
- Your usage of the functions breaks due to the difference
- You lose the lottery and call the version you don’t want to run this time
It’s not a good thing to have, but alone isn’t a problem. If you work with the code, you would want to inspect both - and fix the duplication since it’s an edge case that could cause pain / crash / issues down the road.
I got the same warning after having to reinstall Xcode. Running sudo xcode-select -s /Applications/Xcode.app fixed the issue.