annotate tests/rpat.ur @ 1657:2b7d3d99dc42
Prevent unifications of 'others' pieces in record summaries, when both pieces contain unification variables (to prevent undesired unifications)
| author |
Adam Chlipala <adam@chlipala.net> |
| date |
Thu, 05 Jan 2012 17:10:43 -0500 |
| parents |
71bafe66dbe1 |
| children |
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| rev |
line source |
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adamc@175
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1 val f = fn x : {A : int} => case x of {A = _} => 0
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adamc@175
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2 val f = fn x : {A : int} => case x of {A = _, ...} => 0
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adamc@175
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3 val f = fn x : {A : int, B : int} => case x of {A = _, ...} => 0
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adamc@175
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4 val f = fn x : {A : int, B : int} => case x of {A = 1, B = 2} => 0 | {A = _, ...} => 1
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adamc@175
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5
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adamc@175
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6 datatype t = A | B
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7
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adamc@175
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8 val f = fn x => case x of {A = A, B = 2} => 0 | {A = A, ...} => 0 | {A = B, ...} => 0
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adamc@175
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9
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adamc@175
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10 val f = fn x => case x of {A = {A = A, ...}, B = B} => 0
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adamc@175
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11 | {B = A, ...} => 1
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12 | {A = {A = B, B = A}, B = B} => 2
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adamc@175
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13 | {A = {A = B, B = B}, B = B} => 3
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