Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

ignore-pragmas.c
// RUN: %clang_cc1 -E %s -Wall -verify
// RUN: %clang_cc1 -Eonly %s -Wall -verify
// RUN: %clang -M -Wall %s -Xclang -verify
// RUN: %clang -E -frewrite-includes %s -Wall -Xclang -verify
// RUN: %clang -E -dD -dM %s -Wall -Xclang -verify
// expected-no-diagnostics

#pragma GCC visibility push (default)
#pragma weak
#pragma this_pragma_does_not_exist