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47acc80f4e
* make strict funcs analysis smarter: varParam[i] = v is different from varParam[i][] = v * added a test case * Update compiler/varpartitions.nim Co-authored-by: Clyybber <darkmine956@gmail.com>
28 lines
578 B
Nim
28 lines
578 B
Nim
discard """
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errormsg: "'copy' can have side effects"
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nimout: '''an object reachable from 'y' is potentially mutated
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tfuncs_cannot_mutate2.nim(15, 7) the mutation is here
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tfuncs_cannot_mutate2.nim(13, 10) is the statement that connected the mutation to the parameter
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'''
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"""
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{.experimental: "strictFuncs".}
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func copy[T](x: var openArray[T]; y: openArray[T]) =
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for i in 0..high(x):
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x[i] = y[i]
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x[0].a = nil
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type
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R = ref object
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a, b: R
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data: string
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proc main =
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var a, b: array[3, R]
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b = [R(data: "a"), R(data: "b"), R(data: "c")]
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copy a, b
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main()
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