[clang] [llvm] Singleton hack of fixing static initialisation order ficaso (PR #154541)

[Eli Friedman via llvm-commits]

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@@ -30,18 +30,18 @@ constexpr StringRef AssumptionAttrKey = "llvm.assume";
 
 /// A set of known assumption strings that are accepted without warning and
 /// which can be recommended as typo correction.
-LLVM_ABI extern StringSet<> KnownAssumptionStrings;
+LLVM_ABI extern StringSet<> &getKnownAssumptionStrings();
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efriedma-quic wrote:

```suggestion
LLVM_ABI extern const StringSet<> &getKnownAssumptionStrings();
```

https://github.com/llvm/llvm-project/pull/154541