31a0d7d520
@semorrison this commit improves the bad error message you have reported at lean-user. It is not perfect since the user has to remember the position of the structure field in the constructor.
8 lines
278 B
Text
8 lines
278 B
Text
bad_error4.lean:5:0: error: type mismatch at application
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foo.mk (λ (a : unit) (b : delayed[?m_1]), delayed[?m_2])
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term
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λ (a : unit) (b : delayed[?m_1]), delayed[?m_2]
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has type
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Π (a : unit) (b : delayed[?m_1]), delayed[?m_3]
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but is expected to have type
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unit → unit
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