Historically, vet had always been unhappy about encoding/xml itself:
method MarshalXML(e *xml.Encoder, start xml.StartElement) error should
have signature MarshalXML(*xml.Encoder, xml.StartElement) error
This dates back to the time when vet couldn't depend on type
information. It compared the type expressions directly as strings, which
was a problem when the code was in encoding/xml itself. There, the
function parameters are *Encoder and StartElement, not *xml.Encoder and
xml.StartElement.
However, vet has been depending on type information for a while, so this
restriction no longer makes sense. The analyzer almost got it right, but
the only stopgap was a piece of the old code that tried to compare type
expression strings.
Remove it; typeString already deals with these edge cases for us. To
ensure vet remains happy with encoding/xml, add a very simple test for
it. The package now has zero reports, so the fact that its source has
zero "// want" comments is appropriate.
Finally, remove some long unused parameters from matchParamType.
Change-Id: Iab3ed57da7bc4a80522ae21e62b67e7828b97c89
Reviewed-on: https://go-review.googlesource.com/c/tools/+/168058
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
b6b7807791