// RUN: %clang_cc1 -fsyntax-only -fblocks -I %S/Inputs -isystem %S/Inputs/nullability-consistency-system %s -verify
// RUN: %clang_cc1 -fsyntax-only -fblocks -I %S/Inputs -isystem %S/Inputs/nullability-consistency-system %s -Wsystem-headers -DWARN_IN_SYSTEM_HEADERS -verify
void // don't warn
void