testsuite/tests/linear/should_fail/LinearLazyPat.stderr


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LinearLazyPat.hs:5:3: error: [GHC-18872]
    • Couldn't match type ‘'Many’ with ‘'One’
        arising from a non-linear pattern
    • In the pattern: ~(x, y)
      In an equation for ‘f’: f ~(x, y) = (y, x)