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bugfix: 'result' cannot be captured in a closure

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This commit is contained in:
Araq 2012-09-23 00:52:34 +02:00
commit 603dc36008
4 changed files with 18 additions and 20 deletions
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7
compiler/lambdalifting.nim
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@ -538,9 +538,6 @@ proc liftLambdas*(fn: PSym, body: PNode): PNode =
if body.kind == nkEmpty or gCmd == cmdCompileToEcmaScript:
# ignore forward declaration:
result = body
elif not containsNode(body, procDefs) and false:
# fast path: no inner procs, so no closure needed:
result = body
else:
var o = newOuterContext(fn)
let ex = closureCreationPoint(body)
@ -552,6 +549,10 @@ proc liftLambdas*(fn: PSym, body: PNode): PNode =
InternalError(params.info, "liftLambdas: strange params")
let param = params.sons[i].sym
IdTablePut(o.localsToEnv, param, o.currentEnv)
# put the 'result' into the environment so it can be captured:
let ast = fn.ast
if resultPos < sonsLen(ast) and ast.sons[resultPos].kind == nkSym:
IdTablePut(o.localsToEnv, ast.sons[resultPos].sym, o.currentEnv)
searchForInnerProcs(o, body)
discard transformOuterProc(o, body)
result = ex