[clang] [clang][MSVC] Correct mangling of thread-safe static initialization variables. (PR #85300)

[via cfe-commits]

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@@ -3920,7 +3920,8 @@ void MicrosoftMangleContextImpl::mangleThreadSafeStaticGuardVariable(
   msvc_hashing_ostream MHO(Out);
   MicrosoftCXXNameMangler Mangler(*this, MHO);
 
-  Mangler.getStream() << "?$TSS" << GuardNum << '@';
+  Mangler.getStream() << "?";
+  Mangler.mangleSourceName("$TSS" + llvm::utostr(GuardNum));
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zmodem wrote:

Can you file a bug for followup on these?

https://github.com/llvm/llvm-project/pull/85300