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fix #14157 (#15877)

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* fix #14157

* Update compiler/jsgen.nim

* add changelog

* Update compiler/jsgen.nim

* Update tests/js/tmodify_cstring.nim

Co-authored-by: Andreas Rumpf <rumpf_a@web.de>
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flywind 2020-11-12 16:20:10 +08:00 • committed by GitHub
commit 1f9bf43100
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compiler/jsgen.nim
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@ -1049,6 +1049,10 @@ proc genAsgnAux(p: PProc, x, y: PNode, noCopyNeeded: bool) =
var a, b: TCompRes
var xtyp = mapType(p, x.typ)
# disable `[]=` for cstring
if x.kind == nkBracketExpr and x.len >= 2 and x[0].typ.skipTypes(abstractInst).kind == tyCString:
localError(p.config, x.info, "cstring doesn't support `[]=` operator")
gen(p, x, a)
genLineDir(p, y)
gen(p, y, b)