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1// RUN: not %clang -fsyntax-only -fno-objc-default-synthesize-properties -fobjc-default-synthesize-properties %s 2>&1 | FileCheck %s2 3@interface I4@property int P;5@end6 7@implementation I8@end9// CHECK: error: unknown argument: '-fno-objc-default-synthesize-properties'10// CHECK: error: unknown argument: '-fobjc-default-synthesize-properties'11