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da4aa2e1fb
* Assign hook name changed to `=copy` * Adapt destructors.rst * [nobackport] Duplicate tests for =copy hook * Fix tests * added a changelog entry Co-authored-by: Clyybber <darkmine956@gmail.com>
16 lines
433 B
Nim
16 lines
433 B
Nim
discard """
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cmd: "nim c --newruntime $file"
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errormsg: "'=copy' is not available for type <owned Foo>; requires a copy because it's not the last read of 'a'; another read is done here: tconsume_twice.nim(13, 10); routine: consumeTwice"
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line: 11
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"""
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type
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Foo = ref object
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proc use(a: owned Foo): bool = discard
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proc consumeTwice(a: owned Foo): owned Foo =
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if use(a):
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return
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return a
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assert consumeTwice(Foo()) != nil
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