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Robert Griesemer 30282b091d cmd/compile: correctly import labels, gotos, and fallthroughs
The importer had several bugs with respect to labels and gotos:
- it didn't create a new ONAME node for label names (label dcl,
  goto, continue, and break)
- it overwrote the symbol for gotos with the dclstack
- it didn't set the dclstack for labels

In the process changed export format slightly to always assume
a label name for labels and gotos, and never assume a label for
fallthroughs.

For fallthroughs and switch cases, now also set Xoffset like in
the parser. (Not setting it, i.e., using 0 was ok since this is
only used for verifying correct use of fallthroughs, which was
checked already. But it's an extra level of verification of the
import.)

Fixes #15838.

Change-Id: I3637f6314b8651c918df0c8cd70cd858c92bd483
Reviewed-on: https://go-review.googlesource.com/23445
Run-TryBot: Robert Griesemer <gri@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-05-26 00:32:03 +00:00
.github doc: update issue template 2016-03-09 00:52:16 +00:00
api io: remove SizedReaderAt 2016-05-24 15:37:27 +00:00
doc doc: reflect {Num,}Method skips unexported methods 2016-05-25 18:17:22 +00:00
lib/time all: make copyright headers consistent with one space after period 2016-05-02 13:43:18 +00:00
misc cmd/cgo, runtime, runtime/cgo: TSAN support for malloc 2016-05-25 23:22:24 +00:00
src cmd/compile: correctly import labels, gotos, and fallthroughs 2016-05-26 00:32:03 +00:00
test cmd/compile: correctly import labels, gotos, and fallthroughs 2016-05-26 00:32:03 +00:00
.gitattributes .gitattributes: prevent all magic line ending changes 2014-12-12 23:14:54 +00:00
.gitignore cmd/go: fail with nice error message on bad GOOS/GOARCH pair 2016-05-06 01:18:07 +00:00
AUTHORS A+C: add Andre Nathan (individual CLA) 2016-05-24 13:54:49 +00:00
CONTRIBUTING.md doc: use new Gerrit URL and mention our instance in CONTRIBUTING.md 2016-03-09 00:52:42 +00:00
CONTRIBUTORS A+C: add Andre Nathan (individual CLA) 2016-05-24 13:54:49 +00:00
LICENSE
PATENTS
README.md readme: emphasize issue tracker is for bugs/proposals 2015-10-02 18:44:14 +00:00
favicon.ico godoc: update favicon 2012-10-11 17:02:36 +11:00
robots.txt

README.md

The Go Programming Language

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