runtime/pprof: fix incorrect assumption in TestMapping

TestMapping assumed that there was only one mapping entry corresponding
to /exe/main, but that is not always true.
This CL changes the test logic to examine whether all referenced mappings
are symbolized. Based on the result, the test determines whether the
corresponding mapping entries' HasFunctions fields to be true or false.

I initially attempted to create two mappings for referenced locations
(one for symbolized and another for unsymbolized) as described in the
TODO in proto.go as part of fixing this bug. But that change requires
non-trivial modification in the upstream profile package so I decided
to just fix the test for now.

Fixes #25891

Change-Id: Id27a5b07bb5b59e133755a0f863bf56c0a4f7f2b
Reviewed-on: https://go-review.googlesource.com/119455
Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
1 file changed
tree: 8022a67788f75faa5b073c26be7e5b056ac43117
  1. .github/
  2. api/
  3. doc/
  4. lib/
  5. misc/
  6. src/
  7. test/
  8. .gitattributes
  9. .gitignore
  10. AUTHORS
  11. CONTRIBUTING.md
  12. CONTRIBUTORS
  13. favicon.ico
  14. LICENSE
  15. PATENTS
  16. README.md
  17. robots.txt
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 or load doc/install.html in your web browser 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 or load doc/install-source.html in your web browser for source installation instructions.

Contributing

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

To contribute, please read the contribution guidelines: 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.