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Delete main? This cannot be undone.

api.m.result
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fsyntax-only -fobjc-arc -x objective-c %s.result
// RUN: arcmt-test --args -triple x86_64-apple-darwin10 -fsyntax-only -x objective-c %s > %t
// RUN: diff %t %s.result

#include "Common.h"

void test(NSObject *o) {
  NSZone *z = nil;
}