Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

symbolize-macho-universal-unknown-arch.test
RUN: llvm-symbolizer --obj=%p/Inputs/macho-universal 0x1f84 | FileCheck %s

CHECK-NOT: main
CHECK: ??
CHECK-NOT: main