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

[Sam Clegg via llvm-commits]

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@@ -29,7 +29,7 @@
 
 #if defined(__linux__) || defined(__GNU__) || defined(__HAIKU__) ||            \
     defined(__Fuchsia__) || defined(__EMSCRIPTEN__) || defined(__NetBSD__) ||  \
-    defined(__OpenBSD__) || defined(__DragonFly__)
+    defined(__OpenBSD__) || defined(__DragonFly__) || defined(__wasm__)
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sbc100 wrote:

This should probably be `__wasi__` rather than `__wasm__` since the later is the architecture, which by itself doesn't mean we have `endian.h` available.

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