[libcxx-commits] [libcxx] WiP [libc++][FTM] Updated FTMs from C++29 (PR #218241)

[A. Jiang via libcxx-commits]

================
@@ -1425,6 +1492,12 @@ def add_version_header(tc):
             },
             "headers": ["text_encoding"],
         },
+        {
+            "name": "__cpp_lib_thread_attributes",
+            "values": {"c++29": 202606},  # P2019R9 Thread attributes
+            "headers": ["compare"],
----------------
frederick-vs-ja wrote:

```suggestion
            "headers": ["thread"],
```

https://github.com/llvm/llvm-project/pull/218241