[tor-bugs] #28716 [Applications/Tor Browser]: Create a mingw-w64-clang project

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#28716: Create a mingw-w64-clang project
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 Reporter:  gk                                   |          Owner:  tbb-
                                                 |  team
     Type:  task                                 |         Status:
                                                 |  needs_revision
 Priority:  High                                 |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tbb-rbm, TorBrowserTeam201901,       |  Actual Points:
  GeorgKoppen201901                              |
Parent ID:  #28238                               |         Points:
 Reviewer:                                       |        Sponsor:
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Comment (by tom):

 Replying to [comment:11 gk]:
 > Why would we need 1481633 fixed on esr60 if the reason it came up
 (1471132) did not land on esr60? Moreover, from skimming that bug it seems
 to me that's an issue we should hit during compilation, if at all, which I
 did not.

 Hrm. nsModule compilation might have been broken before 1471132 came
 along; and we just didn't have a mingw-clang build consistently working
 then.

 A few different things can go wrong with nsModules: at compile time you
 could have missing symbols. Or at runtime, the resulting symbols in the
 binary might not be packed or ordered correctly. We do some ugly stuff
 were we basically make an array in the resulting binary, and then iterate
 through it like it was an array. If the layout, padding, or order is
 wrong, the code assumptions break and you get a runtime problem.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/28716#comment:15>
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