cmd/link: when changing to Segrelrodata, reset datsize

Otherwise we leave a gap at the start of Segrelrodata equal to the
size of the read-only non-relro data, which causes -buildmode=pie
executables to be noticeably larger than -buildmode=exe executables.

Change-Id: I98956ef29d5b7a57ad8e633c823ac09d9ca36a45
Reviewed-on: https://go-review.googlesource.com/c/go/+/208897
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2 files changed
tree: 1aaecaf6b30a53e89d87e500469e2f902902fc89
  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
README.md

The Go Programming Language

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