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fixes #15130 (#15141)

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* fixes #15130

* you really have to copy from cursors
This commit is contained in:
Andreas Rumpf 2020-08-01 18:04:04 +02:00 • committed by GitHub
commit 8e3f51f06c
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3 changed files with 81 additions and 4 deletions
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compiler/dfa.nim
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@ -628,7 +628,7 @@ proc isAnalysableFieldAccess*(orig: PNode; owner: PSym): bool =
# XXX Allow closure deref operations here if we know
# the owner controlled the closure allocation?
result = n.kind == nkSym and n.sym.owner == owner and
sfGlobal notin n.sym.flags and
{sfGlobal, sfThread, sfCursor} * n.sym.flags == {} and
(n.sym.kind != skParam or isSinkParam(n.sym)) # or n.sym.typ.kind == tyVar)
# Note: There is a different move analyzer possible that checks for
# consume(param.key); param.key = newValue for all paths. Then code like