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Robert Griesemer 20f0bcb0c1 go/types: don't clone interface methods when embedding them
https://golang.org/cl/191257 significantly changed (and simplified)
the computation of interface method sets with embedded interfaces.
Specifically, when adding methods from an embedded interface, those
method objects (Func Objects) were cloned so that they could have a
different source position (the embedding position rather than the
original method position) for better error messages.

This causes problems for code that depends on the identity of method
objects that represent the same method, embedded or not.

This CL avoids the cloning. Instead, while computing the method set
of an interface, a position map is carried along that tracks
embedding positions. The map is not needed anymore after type-
checking.

Updates #34421.

Change-Id: I8ce188136c76fa70fba686711167db29a049f46d
Reviewed-on: https://go-review.googlesource.com/c/go/+/196561
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2019-09-22 17:10:30 +00:00
.github .github: don't render author-facing text in ISSUE_TEMPLATE 2018-11-02 04:47:34 +00:00
api api/go1.13: add debug/elf.Symbol fields added in CL 184099 2019-08-08 18:44:16 +00:00
doc doc: reword to avoid the confusing term 'anew' 2019-09-20 08:06:51 +00:00
lib/time lib/time: update tz data to 2019b 2019-07-03 23:08:27 +00:00
misc all: remove trailing whitespace from HTML files 2019-09-18 18:32:20 +00:00
src go/types: don't clone interface methods when embedding them 2019-09-22 17:10:30 +00:00
test compile: prefer an AND instead of SHR+SHL instructions 2019-09-21 18:00:13 +00:00
.gitattributes
.gitignore .gitignore: ignore src/cmd/dist/dist 2017-10-28 21:55:49 +00:00
AUTHORS A+C: change email address for Akhil Indurti 2019-09-09 15:30:38 +00:00
CONTRIBUTING.md all: restore changes from faulty merge/revert 2018-02-12 20:13:59 +00:00
CONTRIBUTORS A+C: change email address for Akhil Indurti 2019-09-09 15:30:38 +00:00
favicon.ico website: recreate 16px and 32px favicon 2016-08-25 15:43:32 +00:00
LICENSE doc: revert copyright date to 2009 2016-06-01 22:40:04 +00:00
PATENTS
README.md README: linkify some paths 2018-06-06 18:07:01 +00:00
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SECURITY.md SECURITY.md: add security file 2019-05-23 21:22:44 +00:00

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