David Chase 28fb8c6987 cmd/compile: modify swt.go to skip repeated walks of switch
The compiler appears to contain several squirrelly corner
cases where nodes are double walked, some where new nodes
are created from walked parts.  Rather than trust that we
had searched hard enough for the last one, change
exprSwitch.walk() to return immediately if it has already
been walked.  This appears to be the only case where
double-walking a node is actually harmful.

Fixes #29562.

Change-Id: I0667e8769aba4c3236666cd836a934e256c0bfc5
Reviewed-on: https://go-review.googlesource.com/c/156317
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2019-01-04 21:51:37 +00:00
..
2017-09-15 02:39:16 +00:00
2018-05-29 02:39:16 +00:00
2018-10-06 15:40:03 +00:00
2015-07-11 14:36:33 +00:00
2015-07-11 14:36:33 +00:00
2017-08-11 17:41:17 +00:00
2018-04-30 19:39:18 +00:00
2018-11-26 14:13:53 +00:00
2018-11-27 15:36:08 +00:00
2018-11-26 14:13:53 +00:00
2018-11-26 14:13:53 +00:00
2018-11-02 16:12:08 +00:00
2018-03-01 21:11:16 +00:00
2018-12-03 16:48:21 +00:00

The test directory contains tests of the Go tool chain and runtime. It includes black box tests, regression tests, and error output tests. They are run as part of all.bash.

To run just these tests, execute:

../bin/go run run.go

Standard library tests should be written as regular Go tests in the appropriate package.

The tool chain and runtime also have regular Go tests in their packages. The main reasons to add a new test to this directory are:

  • it is most naturally expressed using the test runner; or
  • it is also applicable to gccgo and other Go tool chains.