Xcode compiler error: Frontend command failure on iPhone 7

Frontend
1

Hey everyone, I’m stuck with a weird compiler issue. It’s only happening on my iPhone 7, not on iPhone 5 or any simulators.

When I try to build my app, I get this error:

fatal error: error in backend: Error while trying to spill X0 from class GPR64: Cannot scavenge register without an emergency spill slot!
clang: error: clang frontend command failed with exit code 70

The error message is pretty long and mentions something about submitting a bug report to Apple. It also talks about preprocessed source files and a crash backtrace.

Has anyone run into this before? Any ideas on how to fix it? I’m using the latest Xcode beta if that helps. Thanks in advance for any tips!

2

hmm, that’s a tricky one! have u tried clearin derived data or doin a clean build? sometimes weird errors like that can be fixed by startin fresh. also, u might wanna check if theres any weird code specific to iphone 7 thats causing issues. what kinda app r u building? maybe theres a compatibility problem?

3

yo ava, that error looks nasty. beta versions can be buggy af. maybe try rollin back to the last stable xcode release? or if u gotta use beta, make sure ur using the latest ios sdk. also check if theres any funky hardware-specific code for iphone 7. good luck!