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UlfNorell / agda-test

Agda test
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Instance search fails if there are several definitionally equal values in scope #899

Closed UlfNorell closed 10 years ago

UlfNorell commented 10 years ago

From guillaum...@gmail.com on September 12, 2013 15:02:22

module Test where

postulate A B : Set f : {{ x : A }} → B a : A

a' : A a' = a

test : B test = f

{- The previous code fails with the following message:

Resolve implicit argument _x_257 : A. Candidates: [a : A, a : A]

There are indeed two values in scope of type A (a and a'), but given that they are definitionally equal, Agda should not complain about it but just pick any one of them. -}

Original issue: http://code.google.com/p/agda/issues/detail?id=899

UlfNorell commented 10 years ago

From nils.anders.danielsson on September 17, 2013 03:17:41

Owner: andreas....@gmail.com

UlfNorell commented 10 years ago

From andreas....@gmail.com on October 21, 2013 14:04:46

Sounds reasonable. One more equality check here does not hurt...

Status: Accepted
Owner: ---
Cc: dominique.devriese@gmail.com
Labels: Instance Type-Enhancement Priority-High

UlfNorell commented 10 years ago

From andreas....@gmail.com on November 07, 2013 14:21:18

Thu Nov 7 23:18:53 CET 2013 Andreas Abel andreas.abel@ifi.lmu.de

Owner: andreas....@gmail.com

UlfNorell commented 10 years ago

From andreas....@gmail.com on November 07, 2013 14:21:48

Status: Fixed