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fixes #2004

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This commit is contained in:
Araq 2015-02-08 15:43:50 +01:00
commit 34b4e9fc96
4 changed files with 49 additions and 23 deletions
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37
compiler/semexprs.nim
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@ -103,28 +103,31 @@ proc semSym(c: PContext, n: PNode, s: PSym, flags: TExprFlags): PNode =
result = newSymNode(s, n.info)
of skMacro: result = semMacroExpr(c, n, n, s, flags)
of skTemplate: result = semTemplateExpr(c, n, s, flags)
of skVar, skLet, skResult, skParam, skForVar:
of skParam:
markUsed(n.info, s)
styleCheckUse(n.info, s)
if s.typ.kind == tyStatic and s.typ.n != nil:
# XXX see the hack in sigmatch.nim ...
return s.typ.n
elif sfGenSym in s.flags:
if c.p.wasForwarded:
# gensym'ed parameters that nevertheless have been forward declared
# need a special fixup:
let realParam = c.p.owner.typ.n[s.position+1]
internalAssert realParam.kind == nkSym and realParam.sym.kind == skParam
return newSymNode(c.p.owner.typ.n[s.position+1].sym, n.info)
elif c.p.owner.kind == skMacro:
# gensym'ed macro parameters need a similar hack (see bug #1944):
var u = searchInScopes(c, s.name)
internalAssert u != nil and u.kind == skParam and u.owner == s.owner
return newSymNode(u, n.info)
result = newSymNode(s, n.info)
of skVar, skLet, skResult, skForVar:
markUsed(n.info, s)
styleCheckUse(n.info, s)
# if a proc accesses a global variable, it is not side effect free:
if sfGlobal in s.flags:
incl(c.p.owner.flags, sfSideEffect)
elif s.kind == skParam:
if s.typ.kind == tyStatic and s.typ.n != nil:
# XXX see the hack in sigmatch.nim ...
return s.typ.n
elif sfGenSym in s.flags:
if c.p.wasForwarded:
# gensym'ed parameters that nevertheless have been forward declared
# need a special fixup:
let realParam = c.p.owner.typ.n[s.position+1]
internalAssert realParam.kind == nkSym and realParam.sym.kind == skParam
return newSymNode(c.p.owner.typ.n[s.position+1].sym, n.info)
elif c.p.owner.kind == skMacro:
# gensym'ed macro parameters need a similar hack (see bug #1944):
var u = searchInScopes(c, s.name)
internalAssert u != nil and u.kind == skParam and u.owner == s.owner
return newSymNode(u, n.info)
result = newSymNode(s, n.info)
# We cannot check for access to outer vars for example because it's still
# not sure the symbol really ends up being used: