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fixes #20141; dereferencing pointer to incomplete type error with cast (#20147)

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Co-authored-by: xflywind <43030857+xflywind@users.noreply.github.com>
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ringabout 2022-09-28 19:57:47 +08:00 • committed by GitHub
commit e33e9e4a32
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5
compiler/ccgexprs.nim
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@ -2189,6 +2189,11 @@ proc genSomeCast(p: BProc, e: PNode, d: var TLoc) =
elif etyp.kind == tyBool and srcTyp.kind in IntegralTypes:
putIntoDest(p, d, e, "(($1) != 0)" % [rdCharLoc(a)], a.storage)
else:
if etyp.kind == tyPtr:
# generates the definition of structs for casts like cast[ptr object](addr x)[]
let internalType = etyp.skipTypes({tyPtr})
if internalType.kind == tyObject:
discard getTypeDesc(p.module, internalType)
putIntoDest(p, d, e, "(($1) ($2))" %
[getTypeDesc(p.module, e.typ), rdCharLoc(a)], a.storage)