[Issue 18296] [Reg2.078.1] invalid code with coverage and copy construction

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18296

--- Comment #4 from github-bugzilla at puremagic.com ---
Commits pushed to master at https://github.com/dlang/dmd

https://github.com/dlang/dmd/commit/0146d2be4298f15416a4f0bee08876934ed2200c
fix Issue 18296 - make __coverage a hidden symbol

- external linkage only for current DSO, but not across DSOs
- avoids GOT indirection on every access
- thus avoids codegen bugs related to those
- uses SCstatic with SFLhidden flag as the access is the same as for
  static symbols, even though linkage is between SCglobal and SCstatic
  In the long-run (and with more usage) a separate SChidden might be cleaner.
- no changes to OMF code as LPUBDEF isn't used

https://github.com/dlang/dmd/commit/eb2bf7713cd46d49a9ea75999188d84b410b45d5
Merge pull request #7772 from MartinNowak/fix18296

fix Issue 18296 - make __coverage a hidden symbol

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