Error: no symbol to borrow from found

[yglukhov]

type HeapQueue[T] = distinct seq[T]
proc len*[T](h: HeapQueue[T]): int {.borrow.}

nim c test.nim

Hint: system [Processing]
Hint: test [Processing]
test.nim(2, 1) Error: no symbol to borrow from found

[Araq]

Yeah, known issue.

[gmpreussner]

Upvote 👍

[gmpreussner]

This also affects the lifting of built-in operators:

type
  Foo[T] = object
    a*: T

  Bar* {.borrow: `.`.} = distinct Foo[int]

var bb: Bar
echo bb.a  # Error: undeclared field: 'a'

In general, borrowing appears to be broken for all generic types.

[bung87]

This also affects the lifting of built-in operators:

type
  Foo[T] = object
    a*: T

  Bar* {.borrow: `.`.} = distinct Foo[int]

var bb: Bar
echo bb.a  # Error: undeclared field: 'a'

In general, borrowing appears to be broken for all generic types.

this works in current devel 3b973f3