a6f4e9156e
This PR avoids running into an “unknown free variable” when printing the “Failed to compile pattern matching” error. Fixes #11186.
51 lines
1.4 KiB
Text
51 lines
1.4 KiB
Text
-- set_option trace.Meta.Match.match true
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-- set_option trace.Meta.Match.debug true
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/--
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error: Failed to compile pattern matching: Stuck at
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remaining variables: [x✝:(String)]
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alternatives:
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[bytes✝:(ByteArray),
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isValidUTF8✝:(bytes✝.IsValidUTF8)] |- [(String.ofByteArray bytes✝ isValidUTF8✝)] => h_1 bytes✝ isValidUTF8✝
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[] |- ["Eek"] => h_2 ()
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[x✝:(String)] |- [x✝] => h_3 x✝
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examples:_
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-/
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#guard_msgs in
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def stringMatch : Option Nat :=
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match "Bad" with
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| String.ofByteArray _ _ => some 1
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| "Eek" => some 2
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| _ => none -- used to be: unknown free variable `_fvar.149`
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/--
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error: Failed to compile pattern matching: Stuck at
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remaining variables: [x✝:(Char)]
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alternatives:
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[valid✝:(UInt32.isValidChar 5)] |- [(Char.mk 5 valid✝)] => h_1 valid✝
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[] |- ['A'] => h_2 ()
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[x✝:(Char)] |- [x✝] => h_3 x✝
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examples:_
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-/
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#guard_msgs in
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def charMatch :=
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match 'X' with
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| Char.mk 5 _ => some 1
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| 'A' => some 2
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| _ => none -- used to be: unknown free variable `_fvar.836`
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/--
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error: Failed to compile pattern matching: Stuck at
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remaining variables: [x✝:(UInt8)]
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alternatives:
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[] |- [(UInt8.ofBitVec (BitVec.ofFin 3))] => h_1 ()
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[] |- [5] => h_2 ()
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[x✝:(UInt8)] |- [x✝] => h_3 x✝
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examples:_
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-/
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#guard_msgs in
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def uInt8Match :=
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match (5: UInt8) with
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| UInt8.ofBitVec (BitVec.ofFin 3) => some 1
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| 5 => some 2
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| _ => none -- used to be: unknown free variable `_fvar.1026`
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