Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

eh-frame-truncated.s
## Check we report a proper error when the content
## of the .eh_frame section is truncated.

# RUN: llvm-mc -triple x86_64 %s -filetype=obj -o %t
# RUN: not llvm-dwarfdump -debug-frame %t 2>&1 | FileCheck %s

# CHECK: error: unexpected end of data at offset 0x4

.section .eh_frame,"a",@unwind
.long 0xFF ## Length