https://issues.dlang.org/show_bug.cgi?id=21299

--- Comment #9 from Dlang Bot <dlang-bot@dlang.rocks> ---
dlang/dmd pull request #11896 "Revert "Fix Issue 21299: Undefined reference to
dmd.root.stringtable.StringValue!(Type).lstring()"" was merged into stable:

- e2e76d744d3f5f46ecf66ae67cf4089c6711be2e by Iain Buclaw:
  Revert "Fix Issue 21299: Undefined reference to
dmd.root.stringtable.StringValue!(Type).lstring()"

  This reverts commit 32273e82ec9ba3f4022f03e7e12d5d4a384dc3ba.

- 74966ae8f8325459df753c3bbe62c54751712ab3 by Iain Buclaw:
  Issue 21299: Add regression test for another undefined reference issue

https://github.com/dlang/dmd/pull/11896

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https://issues.dlang.org/show_bug.cgi?id=21299

--- Comment #10 from Dlang Bot <dlang-bot@dlang.rocks> ---
dlang/dmd pull request #11901 "[dmd-cxx] Issue 21299: Add regression test for another undefined reference issue" was merged into dmd-cxx:

- 503316612bd7b70bf0e73930710ef27e3494bf03 by Iain Buclaw:
  [dmd-cxx] Issue 21299: Add regression test for another undefined reference
issue

https://github.com/dlang/dmd/pull/11901

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https://issues.dlang.org/show_bug.cgi?id=21299

--- Comment #11 from Dlang Bot <dlang-bot@dlang.rocks> ---
dlang/dmd pull request #11961 "merge stable" was merged into master:

- 92758ee0f100dd2b3bd72714e4db415e1bd876f3 by Iain Buclaw:
  Fix Issue 21299: Undefined reference to
dmd.root.stringtable.StringValue!(Type).lstring()

  In `templateInstanceSemantic`, there exists special handling of matching
  template instances for the same template declaration to ensure that only
  at most one instance gets codegen'd.

  If the primary instance `inst` originated from a non-root module, the
  `minst` field will be updated so it is now coming from a root module,
  however all Dsymbol `inst.members` of the instance still have their
  `_scope.minst` pointing at the original non-root module. We must now
  propagate `minst` to all members so that forward referenced dependencies
  that get instantiated will also be appended to the root module,
  otherwise there will be undefined references at link-time.

  This doesn't affect compilations where all modules are compiled
  together, as every module is a root module in that situation.  What this
  primarily affects are cases where there is a mix of root and non-root
  modules, and a template was first instantiated in a non-root context,
  then later instantiated again in a root context.

- 32273e82ec9ba3f4022f03e7e12d5d4a384dc3ba by Iain Buclaw:
  Fix Issue 21299: Undefined reference to
dmd.root.stringtable.StringValue!(Type).lstring()

  Alternative patch where instead of proactively fixing up instance
  members when a template gets changed to a root instance, rather
  propagate the `minst` as and when we run semantic on the nested
  templates that still have a non-root `minst` from its scope.

- 05cbd224e621a858927a1d6e2debbebbb8e246b2 by Iain Buclaw:
  Revert "Fix Issue 21299: Undefined reference to
dmd.root.stringtable.StringValue!(Type).lstring()"

  This reverts commit 32273e82ec9ba3f4022f03e7e12d5d4a384dc3ba.

- cf518229cf08aacee8d681b18b855f94ae8201a6 by Iain Buclaw:
  Issue 21299: Add regression test for another undefined reference issue

https://github.com/dlang/dmd/pull/11961

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