Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

heinous-extensions-on.c
// RUN: %clang_cc1 %s -verify -fheinous-gnu-extensions

void foo(void) {
  int a;
  // PR3788
  asm("nop" : : "m"((int)(a))); // expected-warning {{cast in an inline asm context requiring an lvalue}}
  // PR3794
  asm("nop" : "=r"((unsigned)a)); // expected-warning {{cast in an inline asm context requiring an lvalue}}
}