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go/types: reference to type-switch variable from within function literal sees wrong type. #5504

adonovan opened this issue May 17, 2013 · 2 comments


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@adonovan adonovan commented May 17, 2013

When the name bound to a x.(type) type-switch expression is referred to from within a
function literal inside one of the cases, it sees the type of the interface, not the
concrete type of the case.

(That's because processing of the function literal body is deferred until after the type
of the variable x, which was temporarily mutated for each case, has been restored.)
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@remyoudompheng remyoudompheng commented May 18, 2013

Comment 1:

I saw the same bug yesterday and was about to report too.


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@griesemer griesemer commented May 30, 2013

Comment 2:

This issue was closed by revision golang/tools@faef64e.

Status changed to Fixed.


@golang golang locked and limited conversation to collaborators Jun 24, 2016
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4 participants