cmd/go: fix and re-enable build_trimpath test

The test was comparing a binary built from a list of files to a test
build from a named package. That should not (and did not) work. The
test now compares two binaries built the same way in different
directories.

Also add a portion of the test for GOPATH and fix the gccgo portion of
the test (verified manually).

Fixes #35435

Change-Id: I2535a0011c9d97d2274e5550ae277302dbb91e6f
Reviewed-on: https://go-review.googlesource.com/c/go/+/208234
Run-TryBot: Jay Conrod <jayconrod@google.com>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
1 file changed
tree: fade3327d5aaa15da331dad9b05c8d2a2c245ffd
  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
  18. SECURITY.md
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