[clang] [lld] [llvm] Conditionalize use of POSIX features missing on WASI/WebAssembly (PR #92677)

[James Y Knight via llvm-commits]

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@@ -94,7 +94,7 @@ static std::error_code getHostID(SmallVectorImpl<char> &HostID) {
   StringRef UUIDRef(UUIDStr);
   HostID.append(UUIDRef.begin(), UUIDRef.end());
 
-#elif LLVM_ON_UNIX
+#elif !defined(__wasi__)
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jyknight wrote:

You're changing behavior for `!LLVM_ON_UNIX` (like Windows) to use this branch now. That seems probably unintended. Meant `#elif LLVM_ON_UNIX && !defined(__wasi__)`?

https://github.com/llvm/llvm-project/pull/92677