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fixes #3222

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Araq 2015-11-26 17:39:56 +01:00
commit 85345d2d34
1 changed files with 9 additions and 1 deletions
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10
compiler/sempass2.nim
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@ -705,7 +705,15 @@ proc track(tracked: PEffects, n: PNode) =
for i in 1 .. <len(n): trackOperand(tracked, n.sons[i], paramType(op, i)) for i in 1 .. <len(n): trackOperand(tracked, n.sons[i], paramType(op, i))
if a.kind == nkSym and a.sym.magic in {mNew, mNewFinalize, mNewSeq}: if a.kind == nkSym and a.sym.magic in {mNew, mNewFinalize, mNewSeq}:
# may not look like an assignment, but it is: # may not look like an assignment, but it is:
initVarViaNew(tracked, n.sons[1]) let arg = n.sons[1]
initVarViaNew(tracked, arg)
if {tfNeedsInit} * arg.typ.lastSon.flags != {}:
if a.sym.magic == mNewSeq and n[2].kind in {nkCharLit..nkUInt64Lit} and
n[2].intVal == 0:
# var s: seq[notnil]; newSeq(s, 0) is a special case!
discard
else:
message(arg.info, warnProveInit, $arg)
for i in 0 .. <safeLen(n): for i in 0 .. <safeLen(n):
track(tracked, n.sons[i]) track(tracked, n.sons[i])
of nkDotExpr: of nkDotExpr: