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1// RUN: env RC_DEBUG_PREFIX_MAP=old=new \2// RUN: %clang -target arm64-apple-darwin -### -c -g %s 2>&1 | FileCheck %s3// RUN: env RC_DEBUG_PREFIX_MAP=illegal \4// RUN: not %clang -target arm64-apple-darwin -### -c -g %s 2>&1 | FileCheck %s --check-prefix=ERR5// CHECK: "-fdebug-prefix-map=old=new" 6// ERR: invalid argument 'illegal'7