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fix #15972 (#15994)

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* fix #15972

* add testcase

* more
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flywind 2020-11-18 08:14:14 +08:00 • committed by GitHub
commit 0869d2a477
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4 changed files with 34 additions and 2 deletions
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compiler/semstmts.nim
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@ -739,7 +739,7 @@ proc semForVars(c: PContext, n: PNode; flags: TExprFlags): PNode =
else:
v.typ = iter[i]
n[0][i] = newSymNode(v)
if sfGenSym notin v.flags: addDecl(c, v)
if sfGenSym notin v.flags and not isDiscardUnderscore(v): addDecl(c, v)
elif v.owner == nil: v.owner = getCurrOwner(c)
else:
var v = symForVar(c, n[0])
@ -749,7 +749,7 @@ proc semForVars(c: PContext, n: PNode; flags: TExprFlags): PNode =
# for an example:
v.typ = iterBase
n[0] = newSymNode(v)
if sfGenSym notin v.flags: addDecl(c, v)
if sfGenSym notin v.flags and not isDiscardUnderscore(v): addDecl(c, v)
elif v.owner == nil: v.owner = getCurrOwner(c)
else:
localError(c.config, n.info, errWrongNumberOfVariables)