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close #5540 generic object with generic field evaluated too early #18062

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merged 2 commits into from
May 23, 2021
Merged

close #5540 generic object with generic field evaluated too early #18062

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close #5540 generic object with generic field evaluated too early
timotheecour May 23, 2021
8ea062a
address comment
timotheecour May 23, 2021
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45 changes: 45 additions & 0 deletions tests/misc/t5540.nim
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Original file line number Diff line number Diff line change
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# bug #5540; works in 1.2.0
# fails in 1.0 (Error: cannot generate VM code for)
# fails in 0.18.0 (Error: type mismatch: got <type T>)

block:
type
Fruit = object
Yellow = object
a: int
template getColor(x: typedesc[Fruit]): typedesc = Yellow
type
Banana[T] = object
b: T
a: getColor(Fruit)
Apple[T] = object
a: T
b: getColor(T)
block:
var x: Banana[int]
doAssert x.b == 0
doAssert x.a is Yellow
block:
var x: Apple[Fruit]
doAssert x.b is Yellow

block:
type
Fruit = object
Yellow = object
a: int

template getColor(x: typedesc[Fruit]): typedesc = Yellow

type
Banana[T] = object
b: T
a: getColor(Fruit)

Apple[T] = object
a: T
b: getColor(T)

var x: Banana[int]
x.b = 13
x.a.a = 17