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f94bff7935
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Russ Cox f94bff7935 cmd/dist: zero output variables on entry to goc2c functions 
Zeroing the outputs makes sure that during function calls
in those functions we do not let the garbage collector
treat uninitialized values as pointers.

The garbage collector may still see uninitialized values
if a preemption occurs during the function prologue,
before the zeroing has had a chance to run.

This reduces the number of 'bad pointer' messages when
that runtime check is enabled, but it doesn't fix all of them,
so the check is still disabled.

It will also avoid leaks, although I doubt any of these were
particularly serious.

LGTM=iant, khr
R=iant, khr
CC=golang-codereviews
https://golang.org/cl/80850044
2014-03-27 14:05:31 -04:00
api api: update next.txt 2014-03-06 01:44:04 -05:00
doc doc/go1.3.html: explain the change to the memory model 2014-03-27 11:45:51 +11:00
include cmd/ld: clear unused ctxt before morestack 2014-03-04 13:53:08 -05:00
lib codereview: remove unused upload_options.revision 2014-02-24 10:11:37 -05:00
misc misc/bash, misc/zsh: fix completion rules 2014-03-27 00:29:55 -04:00
src cmd/dist: zero output variables on entry to goc2c functions 2014-03-27 14:05:31 -04:00
test cmd/gc: fix spurious 'use of untyped nil' error 2014-03-27 18:47:00 +01:00
.hgignore lib9: enable on Plan 9 2014-02-13 20:06:41 +01:00
.hgtags tag go1.2.1 2014-03-03 13:22:13 +11:00
AUTHORS A+C: Erik Westrup (individual CLA) 2014-03-26 15:23:05 -07:00
CONTRIBUTORS A+C: Erik Westrup (individual CLA) 2014-03-26 15:23:05 -07:00
favicon.ico godoc: update favicon 2012-10-11 17:02:36 +11:00
LICENSE doc: update licensing text one more time 2012-03-27 15:09:13 +11:00
PATENTS
README README: Fix installation instructions 2013-11-20 13:47:37 -08:00
robots.txt

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.