[libc-commits] [libc] Reland "[libc] build fix for sigsetjmp (#137047)" (PR #137214)

[Petr Hosek via libc-commits]

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@@ -49,9 +53,22 @@ typedef struct {
 #endif
 #else
 #error "__jmp_buf not available for your target architecture."
+#endif
+  // TODO: implement sigjmp_buf related functions for other architectures
+  // Issue: https://github.com/llvm/llvm-project/issues/136358
+#if defined(__i386__) || defined(__x86_64__)
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petrhosek wrote:

Rather than conditionally enabling this based on architecture, we should do it based on the standards enabled in `hdrgen`. Specifically, this should only be enabled for `POSIX` and should never be included elsewhere regardless of the architecture.

https://github.com/llvm/llvm-project/pull/137214