Check glibc version when ignoring fields

Author: Thomasdezeeuw

libc-test/build.rs

@@ -5128,7 +5128,6 @@ fn test_linux(target: &str) {
             {
                 true
             }
-            // Requires glibc >= 2.43.
             (
                 "statx",
                 "stx_subvol"
@@ -5139,7 +5138,7 @@ fn test_linux(target: &str) {
                 | "stx_atomic_write_unit_max_opt"
                 | "__statx_pad2"
                 | "__statx_pad3",
-            ) => true,
+            ) if gnu && versions.glibc.unwrap() < (2, 43) => true,
             _ => false,
         }
     });