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[add testcase] NRVO does not occur with init procedures #19462

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Jan 29, 2022
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[add testcase] NRVO does not occur with init procedures #19462

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[add testcase] NRVO does not occur with init procedures
ringabout Jan 28, 2022
17f5b22
Update tests/ccgbugs2/tcodegen.nim
ringabout Jan 28, 2022
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27 changes: 27 additions & 0 deletions tests/ccgbugs2/tcodegen.nim
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@@ -0,0 +1,27 @@
discard """
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targets: "c cpp"
"""

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type
X = object
filler: array[2048, int]
innerAddress: uint

proc initX(): X =
result.innerAddress = cast[uint](result.addr)

proc initXInPlace(x: var X) =
x.innerAddress = cast[uint](x.addr)

block: # NRVO1
var x = initX()
let innerAddress = x.innerAddress
let outerAddress = cast[uint](x.addr)
doAssert(innerAddress == outerAddress) # [OK]

block: # NRVO2
var x: X
initXInPlace(x)
let innerAddress = x.innerAddress
let outerAddress = cast[uint](x.addr)
doAssert(innerAddress == outerAddress) # [OK]