Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
RUN: yaml2obj %p/Inputs/COFF/weak-externals.yaml | llvm-objdump -t - | FileCheck %s CHECK: [ 0](sec 0)(fl 0x00)(ty 0)(scl 69) (nx 1) 0x00000000 Function CHECK: AUX indx 9 srch 2