Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

output-file-is-dir.c
// RUN: rm -rf %t.dir
// RUN: mkdir -p %t.dir
// RUN: not %clang %s -c -emit-llvm -o %t.dir
// RUN: test -d %t.dir

int main() { return 0; }