Internal change.

PiperOrigin-RevId: 322859907

test/syscalls/linux/BUILD

@@ -943,6 +943,7 @@ cc_binary(
         "//test/util:eventfd_util",
         "//test/util:file_descriptor",
         "//test/util:fs_util",
+        "@com_google_absl//absl/container:node_hash_set",
         "@com_google_absl//absl/strings",
         gtest,
         "//test/util:posix_error",

test/syscalls/linux/getdents.cc

@@ -32,6 +32,7 @@
 
 #include "gmock/gmock.h"
 #include "gtest/gtest.h"
+#include "absl/container/node_hash_set.h"
 #include "absl/strings/numbers.h"
 #include "absl/strings/str_cat.h"
 #include "test/util/eventfd_util.h"
@@ -393,7 +394,7 @@ TYPED_TEST(GetdentsTest, ProcSelfFd) {
   // Make the buffer very small since we want to iterate.
   typename TestFixture::DirentBufferType dirents(
       2 * sizeof(typename TestFixture::LinuxDirentType));
-  std::unordered_set<int> prev_fds;
+  absl::node_hash_set<int> prev_fds;
   while (true) {
     dirents.Reset();
     int rv;