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Katie Hockman 2fed6926a1 [dev.fuzz] cmd/go/internal: instrument imports of the test 
Previously, the packages that were imported by the
test were not instrumented for coverage. This meant
that a fuzz target in a stand-alone test file would
not be able to perform coverage-guided fuzzing.

The fix uses all of the imports, including those
from the test files, when determining which packages
to instrument. However, certain package should
be ignored when walking the import graph. Otherwise,
packages like internal/fuzz, and its imports, may be
instrumented, which could lead to false positives for
"interesting" corpus values.

There was an additional bug which needed to be fixed
in order for this to work. The bug was in the fact that
the GcFlags which held `-d=libfuzzer` were being
overwritten in some cases. The fix updates the way these
flags are set in order to prevent this behavior.

Change-Id: I21d336c29a33db1181bbae0fd23678d127fe52a0
Reviewed-on: https://go-review.googlesource.com/c/go/+/321960
Trust: Katie Hockman <katie@golang.org>
Run-TryBot: Katie Hockman <katie@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
 		2021-05-27 19:16:13 +00:00
.github .github: add link to questions in ISSUE_TEMPLATE 2020-01-06 17:05:31 +00:00
api [dev.fuzz] all: merge master (d137b74) into dev.fuzz 2021-05-17 11:03:09 -04:00
doc doc/go1.17: fill in TODO for compress/lzw package 2021-05-07 21:01:09 +00:00
lib/time lib/time, time/tzdata: update tzdata to 2021a 2021-01-25 16:08:46 +00:00
misc runtime: rename walltime1 to walltime 2021-04-29 14:15:04 +00:00
src [dev.fuzz] cmd/go/internal: instrument imports of the test 2021-05-27 19:16:13 +00:00
test cmd/compile: add arch-specific inlining for runtime.memmove 2021-05-12 16:23:30 +00:00
.gitattributes all: treat all files as binary, but check in .bat with CRLF 2020-06-08 15:31:43 +00:00
.gitignore internal/buildcfg: move build configuration out of cmd/internal/objabi 2021-04-16 19:20:53 +00:00
AUTHORS A+C: add Weixie Cui (individual CLA) 2021-04-30 16:27:50 +00:00
CONTRIBUTING.md all: restore changes from faulty merge/revert 2018-02-12 20:13:59 +00:00
CONTRIBUTORS CONTRIBUTORS: change my name 2021-05-06 16:28:56 +00:00
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README.md README: pull gopher image from website 2021-02-16 18:25:10 +00:00
SECURITY.md SECURITY.md: update go versions 2019-09-26 15:34:57 +00:00
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README.md

The Go Programming Language

Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.

Gopher image Gopher image by Renee French, licensed under Creative Commons 3.0 Attributions license.

Our canonical Git repository is located at https://go.googlesource.com/go. There is a mirror of the repository at https://github.com/golang/go.

Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file.

Download and Install

Binary Distributions

Official binary distributions are available at https://golang.org/dl/.

After downloading a binary release, visit https://golang.org/doc/install for installation instructions.

Install From Source

If a binary distribution is not available for your combination of operating system and architecture, visit https://golang.org/doc/install/source for source installation instructions.

Contributing

Go is the work of thousands of contributors. We appreciate your help!

To contribute, please read the contribution guidelines at https://golang.org/doc/contribute.html.

Note that the Go project uses the issue tracker for bug reports and proposals only. See https://golang.org/wiki/Questions for a list of places to ask questions about the Go language.