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bugfixes; step one for 'var T' as return type support

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This commit is contained in:
Araq 2011-07-28 00:53:52 +02:00
commit 2f066395ba
27 changed files with 234 additions and 68 deletions
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6
compiler/semthreads.nim
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@ -107,7 +107,7 @@ proc analyseSym(c: PProcCtx, n: PNode): TThreadOwner =
result = c.mapping[v.id]
if result != toUndefined: return
case v.kind
of skVar:
of skVar, skResult:
result = toNil
if sfGlobal in v.flags:
if sfThreadVar in v.flags:
@ -192,9 +192,13 @@ proc analyseCall(c: PProcCtx, n: PNode): TThreadOwner =
if prc.ast.sons[codePos].kind == nkEmpty and
{sfNoSideEffect, sfThread, sfImportc} * prc.flags == {}:
Message(n.info, warnAnalysisLoophole, renderTree(n))
if result == toUndefined: result = toNil
if prc.typ.sons[0] != nil:
if prc.ast.len > resultPos:
result = newCtx.mapping[prc.ast.sons[resultPos].sym.id]
# if the proc body does not set 'result', nor 'return's something
# explicitely, it returns a binary zero, so 'toNil' is correct:
if result == toUndefined: result = toNil
else:
result = toNil
else: