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1 // RUN: diagtool find-diagnostic-id warn_unused_variable > %t; FileCheck %s < %t
2 // RUN: cat %t | xargs diagtool find-diagnostic-id | FileCheck %s --check-prefix=INVERSE
3 // RUN: not diagtool find-diagnostic-id warn_unused_vars 2>&1 | FileCheck --check-prefix=ERROR %s
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5 // CHECK: {{^[0-9]+$}}
6 // INVERSE: warn_unused_variable
7 // ERROR: error: invalid diagnostic 'warn_unused_vars'
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