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fixes #12820 (#12828)

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cooldome 2019-12-09 19:03:23 +00:00 • committed by Andreas Rumpf
commit 5929c3da21
2 changed files with 14 additions and 0 deletions
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7
compiler/liftdestructors.nim
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@ -702,6 +702,12 @@ template inst(field, t) =
proc isTrival(s: PSym): bool {.inline.} =
s == nil or (s.ast != nil and s.ast[bodyPos].len == 0)
proc isEmptyContainer(g: ModuleGraph, t: PType): bool =
(t.kind == tyArray and lengthOrd(g.config, t[0]) == 0) or
(t.kind == tySequence and t[0].kind == tyError)
proc createTypeBoundOps(g: ModuleGraph; c: PContext; orig: PType; info: TLineInfo) =
## In the semantic pass this is called in strategic places
## to ensure we lift assignment, destructors and moves properly.
@ -710,6 +716,7 @@ proc createTypeBoundOps(g: ModuleGraph; c: PContext; orig: PType; info: TLineInf
incl orig.flags, tfCheckedForDestructor
let skipped = orig.skipTypes({tyGenericInst, tyAlias, tySink})
if isEmptyContainer(skipped): return
let h = sighashes.hashType(skipped, {CoType, CoConsiderOwned, CoDistinct})
var canon = g.canonTypes.getOrDefault(h)