cmd/go: allow output in non-existent directory

When 'go build' is given an output path with -o, if the output path
ends with a path separator, always treat it as a directory.

Fixes #41313

Change-Id: I9a9c25448abfcd6297ad973f5ed2025b2568a4a7
GitHub-Last-Rev: 20a19bd63a2779a2c94b0efdf86146ffd551293c
GitHub-Pull-Request: golang/go#41314
Run-TryBot: Jay Conrod <>
Run-TryBot: Bryan C. Mills <>
TryBot-Result: Go Bot <>
Reviewed-by: Jay Conrod <>
Trust: Bryan C. Mills <>
Trust: Jay Conrod <>
3 files changed
tree: e069baec85a37a64d3d731a99d1c53c3cbd08c1c
  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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