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distinct generic typeclass not treated as distinct #4435

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jcosborn opened this Issue Jul 1, 2016 · 0 comments

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jcosborn commented Jul 1, 2016

The distinct generic types A[T] and B[T] are not treated as distinct when used as typeclasses. Using them with the generic parameter still works though. This code works in 0.13.

type
  A[T] = distinct T
  B[T] = distinct T

proc foo[T](x:A[T]) = echo "A"
proc foo[T](x:B[T]) = echo "B"
proc bar(x:A) = echo "A"
proc bar(x:B) = echo "B"

var
  a:A[int]

foo(a) # fine
bar(a) # testdistinct.nim(14, 4) Error: ambiguous call; both testdistinct.bar(x: A) and testdistinct.bar(x: B) match for: (A[system.int])

@zah zah self-assigned this May 13, 2017

@zah zah added the Generics label May 13, 2017

jcosborn added a commit to jcosborn/Nim that referenced this issue Oct 4, 2018

@Araq Araq closed this in dd65986 Oct 9, 2018

krux02 added a commit to krux02/Nim that referenced this issue Oct 15, 2018

narimiran added a commit to narimiran/Nim that referenced this issue Oct 31, 2018

narimiran added a commit to narimiran/Nim that referenced this issue Nov 1, 2018

narimiran added a commit that referenced this issue Nov 1, 2018

fixes #4435 (#9185)
(cherry picked from commit dd65986)
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