cmd/go/internal/modload: reject some bad module paths

This change rejects module paths that don't conform to
the new checkModulePathLax function, when loading a go.mod
file. The change uses the checkModulePathLax function instead of
CheckPath because there are still many users who are using
unpublished modules with unpublishable paths, and we don't
want to break them all.

Next, before this change, when go mod init is run in GOPATH,
it would try to use the location of the directory within GOPATH
to infer the module path. After this change, it will only use
that inferred module path if it conforms to module.CheckPath.

Change-Id: Idb36d1655cc76aae82671e87ba634609503ad1a2
Run-TryBot: Michael Matloob <>
TryBot-Result: Gobot Gobot <>
Reviewed-by: Bryan C. Mills <>
2 files changed
tree: 03313f774fb60043129d63a7c3d4b44068c7fbbb
  1. .gitattributes
  2. .github/
  3. .gitignore
  11. api/
  12. doc/
  13. favicon.ico
  14. lib/
  15. misc/
  16. robots.txt
  17. src/
  18. test/

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