Commit 7f012eef0b

@@ -515,7 +515,14 @@ test "argsAlloc" {
 
 test "memfd_create" {
     // memfd_create is only supported by linux and freebsd.
-    if (native_os != .linux and native_os != .freebsd) return error.SkipZigTest;
+    switch (native_os) {
+        .linux => {},
+        .freebsd => {
+            if (comptime builtin.os.version_range.semver.max.order(.{ .major = 13, .minor = 0 }) == .lt)
+                return error.SkipZigTest;
+        },
+        else => return error.SkipZigTest,
+    }
 
     const fd = std.os.memfd_create("test", 0) catch |err| switch (err) {
         // Related: https://github.com/ziglang/zig/issues/4019

@@ -6564,6 +6564,8 @@ pub fn memfd_createZ(name: [*:0]const u8, flags: u32) MemFdCreateError!fd_t {
             }
         },
         .freebsd => {
+            if (comptime builtin.os.version_range.semver.max.order(.{ .major = 13, .minor = 0 }) == .lt)
+                @compileError("memfd_create is unavailable on FreeBSD < 13.0");
             const rc = system.memfd_create(name, flags);
             switch (errno(rc)) {
                 .SUCCESS => return rc,