mirror of https://github.com/golang/go.git
0a8a719ded
In large functions with many variables, the register optimizer may give up and choose not to track certain variables at all. In this case, the "nextinnode" information linking together all the words from a given variable will be incomplete, and the result may be that only some of a multiword value is preserved across a call. That confuses the garbage collector, so don't do that. Instead, mark those variables as having their address taken, so that they will be preserved at all calls. It's overkill, but correct. Tested by hand using the 6g -S output to see that it does fix the buggy generated code leading to the issue 7726 failure. There is no automated test because I managed to break the compiler while writing a test (see issue 7727). I will check in a test along with the fix to issue 7727. Fixes #7726. LGTM=khr R=khr, bradfitz, dave CC=golang-codereviews https://golang.org/cl/85200043 |
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README
This is the source code repository for the Go programming language.
For documentation about how to install and use Go,
visit http://golang.org/ or load doc/install-source.html
in your web browser.
After installing Go, you can view a nicely formatted
doc/install-source.html by running godoc --http=:6060
and then visiting http://localhost:6060/doc/install/source.
Unless otherwise noted, the Go source files are distributed
under the BSD-style license found in the LICENSE file.
--
Binary Distribution Notes
If you have just untarred a binary Go distribution, you need to set
the environment variable $GOROOT to the full path of the go
directory (the one containing this README). You can omit the
variable if you unpack it into /usr/local/go, or if you rebuild
from sources by running all.bash (see doc/install.html).
You should also add the Go binary directory $GOROOT/bin
to your shell's path.
For example, if you extracted the tar file into $HOME/go, you might
put the following in your .profile:
export GOROOT=$HOME/go
export PATH=$PATH:$GOROOT/bin
See doc/install.html for more details.