internal/filedesc: don't close over descopts values

It is possible for filedesc to construct a lazy options decoder before
the descriptor package has been imported. For example, top-level enum
values are eagerly decoded, so a generated proto package can construct a
lazy options decoder for an enum value at init time.

Don't close over the variables in descopts. Instead, close over a pointer
to the variable.

Panic with an informative message in the case where options are decoded
before the descriptor package has been initialized.

Change-Id: I277a57602b083cb7bbf92c8114c50b467e59521f
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/188820
Reviewed-by: Joe Tsai <thebrokentoaster@gmail.com>
1 file changed
tree: 32683678d1ce0ca2d3faa94240870e24ce520570
  1. benchmarks/
  2. cmd/
  3. compiler/
  4. encoding/
  5. internal/
  6. proto/
  7. reflect/
  8. runtime/
  9. testing/
  10. types/
  11. .gitignore
  12. .travis.yml
  13. AUTHORS
  14. CONTRIBUTING.md
  15. CONTRIBUTORS
  16. go.mod
  17. go.sum
  18. integration_test.go
  19. LICENSE
  20. PATENTS
  21. README.md
  22. regenerate.bash
  23. test.bash
README.md

Next Generation Go Protocol Buffers

WARNING: This repository is in active development. There are no guarantees about API stability. Breaking changes will occur until a stable release is made and announced.

This repository is for the development of the next major Go implementation of protocol buffers. This library makes breaking API changes relative to the existing Go protobuf library. Of particular note, this API aims to make protobuf reflection a first-class feature of the API and implements the protobuf ecosystem in terms of reflection.

Design Documents

List of relevant design documents:

Contributing

We appreciate community contributions. See CONTRIBUTING.md.

Reporting Issues

Issues regarding the new API can be filed at github.com/golang/protobuf. Please use a APIv2: prefix in the title to make it clear that the issue is regarding the new API work.