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fixes an old ARC bug: the produced copy/sink operations don't copy the hidden type field for objects with enabled inheritance; fixes #19205 [backport:1.6] (#19232)

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Andreas Rumpf 2021-12-09 22:23:16 +01:00 • committed by GitHub
commit 32d4bf3525
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6 changed files with 38 additions and 2 deletions
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15
tests/arc/tarcmisc.nim
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@ -30,6 +30,7 @@ ok
true
copying
123
42
closed
destroying variable: 20
destroying variable: 10
@ -482,3 +483,17 @@ method testMethod(self: BrokenObject) {.base.} =
let mikasa = BrokenObject()
mikasa.testMethod()
# bug #19205
type
InputSectionBase* = object of RootObj
relocations*: seq[int] # traced reference. string has a similar SIGSEGV.
InputSection* = object of InputSectionBase
proc fooz(sec: var InputSectionBase) =
if sec of InputSection: # this line SIGSEGV.
echo 42
var sec = create(InputSection)
sec[] = InputSection(relocations: newSeq[int]())
fooz sec[]