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fix #13902 distinct uint64 type corruption on 32-bit with borrow (#13907) [backport:1.2]

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* fix #13902 distinct uint64 type corruption on 32-bit with borrow

Co-authored-by: Timothee Cour <timothee.cour2+lightsail@gmail.com>
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Timothee Cour 2020-04-08 00:56:16 -07:00 • committed by GitHub
commit 95fd8ae93c
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2 changed files with 13 additions and 1 deletions
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compiler/ccgexprs.nim
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@ -2156,7 +2156,7 @@ proc genMagicExpr(p: BProc, e: PNode, d: var TLoc, op: TMagic) =
const opr: array[mInc..mDec, string] = ["+=", "-="]
const fun64: array[mInc..mDec, string] = ["nimAddInt64", "nimSubInt64"]
const fun: array[mInc..mDec, string] = ["nimAddInt","nimSubInt"]
let underlying = skipTypes(e[1].typ, {tyGenericInst, tyAlias, tySink, tyVar, tyLent, tyRange})
let underlying = skipTypes(e[1].typ, {tyGenericInst, tyAlias, tySink, tyVar, tyLent, tyRange, tyDistinct})
if optOverflowCheck notin p.options or underlying.kind in {tyUInt..tyUInt64}:
binaryStmt(p, e, d, opr[op])
else: