reflect: remove struct tags from unexported types
Before CL 4281055 in 2011, the reflect package was quite different. rtype, then called commonType, was embedded in exported structs with names like StructType. In order to avoid accidental conversions between pointers to these public structs, which sometimes had identical fields, the embedded commonType fields were tagged. In CL 4281055 the formerly public structs were unexported, and all access was done through the Type interface. At that point the field tags in the reflect structs were no longer useful. In Go 1.8 the language was changed to ignore struct field tags when converting between types. This made the field tags in the reflect structs doubly useless. This CL simply removes them. Fixes #20914 Change-Id: I9af4d6d0709276a91a6b6ee5323cad9dcd0cd0a0 Reviewed-on: https://go-review.googlesource.com/121475 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:Brad Fitzpatrick <bradfitz@golang.org>
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