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5724c685e9
fixes #24760
I tried `incl` `tfHasAsgn` to nontrivial assignment, but that solution
seems to break too many things. Instead, in this PR, `passCopyToSink`
now checks nontrivial assignment
(cherry picked from commit e958f4a3cd)
20 lines
456 B
Nim
20 lines
456 B
Nim
discard """
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matrix: "--mm:orc"
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errormsg: "=dup' is not available for type <B>, which is inferred from unavailable '=copy'; requires a copy because it's not the last read of 'b'; another read is done here: t24760.nim(19, 8); routine: g"
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"""
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type
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A {.inheritable.} = object
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B = object of A
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proc `=copy`(a: var A, x: A) {.error.}
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#proc `=copy`(a: var B, x: B) {.error.}
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proc ffff(v: sink B) =
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echo v
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proc g() =
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var b: B
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ffff(b)
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ffff(b)
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g() |