go/analysis/analysistest: fix nil pointer dereference when sorting facts

Without this change, we can't use `ExportPackageFact` function with analysistest package.

PackageFacts are keyed by nil and analysistest.check crashed while sorting, due to a nil object dereference.

Change-Id: Ic94c71acc9c74012bf150e1d72e937da8dfdff75
GitHub-Last-Rev: 51c91008a6756e66c630bfeabc9b8da08c12bfdd
GitHub-Pull-Request: golang/tools#163
Reviewed-on: https://go-review.googlesource.com/c/tools/+/196758
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Alan Donovan <adonovan@google.com>
5 files changed
tree: 115a7831290e63e16e2895bfd89a70f1dff67561
  1. benchmark/
  2. blog/
  3. cmd/
  4. container/
  5. cover/
  6. go/
  7. godoc/
  8. gopls/
  9. imports/
  10. internal/
  11. playground/
  12. present/
  13. refactor/
  14. .gitattributes
  15. .gitignore
  16. AUTHORS
  17. codereview.cfg
  18. CONTRIBUTING.md
  19. CONTRIBUTORS
  20. go.mod
  21. go.sum
  22. LICENSE
  23. PATENTS
  24. README.md
README.md

Go Tools

This subrepository holds the source for various packages and tools that support the Go programming language.

Some of the tools, godoc and vet for example, are included in binary Go distributions.

Others, including the Go guru and the test coverage tool, can be fetched with go get.

Packages include a type-checker for Go and an implementation of the Static Single Assignment form (SSA) representation for Go programs.

Download/Install

The easiest way to install is to run go get -u golang.org/x/tools/.... You can also manually git clone the repository to $GOPATH/src/golang.org/x/tools.

Report Issues / Send Patches

This repository uses Gerrit for code changes. To learn how to submit changes to this repository, see https://golang.org/doc/contribute.html.

The main issue tracker for the tools repository is located at https://github.com/golang/go/issues. Prefix your issue with “x/tools/(your subdir):” in the subject line, so it is easy to find.