C++程序  |  6行  |  272 B

// RUN: clang-check "%s" -extra-arg=-Wunimplemented-warning -extra-arg-before=-Wunimplemented-warning-before -- -c 2>&1 | FileCheck %s

// CHECK: unknown warning option '-Wunimplemented-warning-before'
// CHECK: unknown warning option '-Wunimplemented-warning'
void a(){}