Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

macro_expand.c
// RUN: %clang_cc1 -E %s | FileCheck --strict-whitespace %s

#define X() Y
#define Y() X

A: X()()()
// CHECK: {{^}}A: Y{{$}}

// PR3927
#define f(x) h(x
#define for(x) h(x
#define h(x) x()
B: f(f))
C: for(for))

// CHECK: {{^}}B: f(){{$}}
// CHECK: {{^}}C: for(){{$}}

// rdar://6880648
#define f(x,y...) y
f()

// CHECK: #pragma omp parallel for
#define FOO parallel
#define Streaming _Pragma("omp FOO for")
Streaming