Commits on Nov 3, 2018

1. rustc: Delete grouping logic from the musl target …

   This commit deletes the injection of `-(` and `-)` options to the linker
   for the musl targets. This actually causes problems today on nightly if
   you execute:
   
       $ echo 'fn main() {}' >> foo.rs
       $ rustc --target x86_64-unknown-linux-musl -C panic=abort
   
   you get a linker error about "cannot nest groups". This comes about
   because rustc injects its own `--start-group` and `--end-group`
   variables which clash with the outer `-(` and `-)` variables. It's not
   entirely clear to me why this doesn't affect the musl target by default
   (in `-C panic=unwind` mode).
   
   The compiler's own injection of `--start-group` and `--end-group` should
   solve the issues mentioned in the comment for injecting `-(` and `-)` as
   well.

   

   alexcrichton committed Nov 3, 2018
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