Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
struct X { union { void *a; }; }; // RUN: c-index-test -index-file %s > %t // RUN: FileCheck %s -input-file=%t // CHECK: [indexDeclaration]: kind: field | name: a | {{.*}} | loc: 3:11