diff --git a/tests/BionicDeathTest.h b/tests/BionicDeathTest.h
index 3e8d7b2..6826ab7 100644
--- a/tests/BionicDeathTest.h
+++ b/tests/BionicDeathTest.h
@@ -21,25 +21,28 @@
 
 #include <gtest/gtest.h>
 
+#if !defined(__BIONIC__)
+#define sigaction64 sigaction
+#endif
+
 class BionicDeathTest : public testing::Test {
  protected:
   virtual void SetUp() {
     // Suppress debuggerd stack traces. Too slow.
     for (int signo : { SIGABRT, SIGBUS, SIGSEGV, SIGSYS }) {
-      struct sigaction action = {};
-      action.sa_handler = SIG_DFL;
-      sigaction(signo, &action, &previous_);
+      struct sigaction64 action = { .sa_handler = SIG_DFL };
+      sigaction64(signo, &action, &previous_);
     }
   }
 
   virtual void TearDown() {
     for (int signo : { SIGABRT, SIGBUS, SIGSEGV, SIGSYS }) {
-      sigaction(signo, &previous_, nullptr);
+      sigaction64(signo, &previous_, nullptr);
     }
   }
 
  private:
-  struct sigaction previous_;
+  struct sigaction64 previous_;
 };
 
 #endif // BIONIC_TESTS_BIONIC_DEATH_TEST_H_
diff --git a/tests/ScopedSignalHandler.h b/tests/ScopedSignalHandler.h
index 85c41a8..36bbf10 100644
--- a/tests/ScopedSignalHandler.h
+++ b/tests/ScopedSignalHandler.h
@@ -26,6 +26,7 @@
 #define posix_spawnattr_setsigdefault64 posix_spawnattr_setsigdefault
 #define posix_spawnattr_setsigmask64 posix_spawnattr_setsigmask
 #define pthread_sigmask64 pthread_sigmask
+#define sigaction64 sigaction
 #define sigaddset64 sigaddset
 #define sigdelset64 sigdelset
 #define sigemptyset64 sigemptyset
@@ -47,7 +48,7 @@
     memset(&action_, 0, sizeof(action_));
     action_.sa_flags = sa_flags;
     action_.sa_handler = handler;
-    sigaction(signal_number_, &action_, &old_action_);
+    sigaction64(signal_number_, &action_, &old_action_);
   }
 
   ScopedSignalHandler(int signal_number, void (*action)(int, siginfo_t*, void*),
@@ -56,20 +57,20 @@
     memset(&action_, 0, sizeof(action_));
     action_.sa_flags = sa_flags;
     action_.sa_sigaction = action;
-    sigaction(signal_number_, &action_, &old_action_);
+    sigaction64(signal_number_, &action_, &old_action_);
   }
 
   ScopedSignalHandler(int signal_number) : signal_number_(signal_number) {
-    sigaction(signal_number, nullptr, &old_action_);
+    sigaction64(signal_number, nullptr, &old_action_);
   }
 
   ~ScopedSignalHandler() {
-    sigaction(signal_number_, &old_action_, NULL);
+    sigaction64(signal_number_, &old_action_, NULL);
   }
 
  private:
-  struct sigaction action_;
-  struct sigaction old_action_;
+  struct sigaction64 action_;
+  struct sigaction64 old_action_;
   const int signal_number_;
 };
 
diff --git a/tests/signal_test.cpp b/tests/signal_test.cpp
index ebc079e..87a918f 100644
--- a/tests/signal_test.cpp
+++ b/tests/signal_test.cpp
@@ -269,55 +269,63 @@
   ASSERT_EQ(1, g_sigsuspend64_signal_handler_call_count);
 }
 
-static void EmptySignalHandler(int) {}
-static void EmptySignalAction(int, siginfo_t*, void*) {}
-
-TEST(signal, sigaction) {
+template <typename SigActionT, typename SigSetT>
+static void TestSigAction(int (sigaction_fn)(int, const SigActionT*, SigActionT*),
+                          int (sigaddset_fn)(SigSetT*, int),
+                          int sig) {
   // Both bionic and glibc set SA_RESTORER when talking to the kernel on arm,
   // arm64, x86, and x86-64. The version of glibc we're using also doesn't
   // define SA_RESTORER, but luckily it's the same value everywhere, and mips
   // doesn't use the bit for anything.
   static const unsigned sa_restorer = 0x4000000;
 
-  // See what's currently set for SIGALRM.
-  struct sigaction original_sa;
-  memset(&original_sa, 0, sizeof(original_sa));
-  ASSERT_EQ(0, sigaction(SIGALRM, NULL, &original_sa));
+  // See what's currently set for this signal.
+  SigActionT original_sa = {};
+  ASSERT_EQ(0, sigaction_fn(sig, NULL, &original_sa));
   ASSERT_TRUE(original_sa.sa_handler == NULL);
   ASSERT_TRUE(original_sa.sa_sigaction == NULL);
   ASSERT_EQ(0U, original_sa.sa_flags & ~sa_restorer);
 
   // Set a traditional sa_handler signal handler.
-  struct sigaction sa;
-  memset(&sa, 0, sizeof(sa));
-  sigaddset(&sa.sa_mask, SIGALRM);
+  auto no_op_signal_handler = [](int) {};
+  SigActionT sa = {};
+  sigaddset_fn(&sa.sa_mask, sig);
   sa.sa_flags = SA_ONSTACK;
-  sa.sa_handler = EmptySignalHandler;
-  ASSERT_EQ(0, sigaction(SIGALRM, &sa, NULL));
+  sa.sa_handler = no_op_signal_handler;
+  ASSERT_EQ(0, sigaction_fn(sig, &sa, NULL));
 
   // Check that we can read it back.
-  memset(&sa, 0, sizeof(sa));
-  ASSERT_EQ(0, sigaction(SIGALRM, NULL, &sa));
-  ASSERT_TRUE(sa.sa_handler == EmptySignalHandler);
+  sa = {};
+  ASSERT_EQ(0, sigaction_fn(sig, NULL, &sa));
+  ASSERT_TRUE(sa.sa_handler == no_op_signal_handler);
   ASSERT_TRUE((void*) sa.sa_sigaction == (void*) sa.sa_handler);
   ASSERT_EQ(static_cast<unsigned>(SA_ONSTACK), sa.sa_flags & ~sa_restorer);
 
   // Set a new-style sa_sigaction signal handler.
-  memset(&sa, 0, sizeof(sa));
-  sigaddset(&sa.sa_mask, SIGALRM);
+  auto no_op_sigaction = [](int, siginfo_t*, void*) {};
+  sa = {};
+  sigaddset_fn(&sa.sa_mask, sig);
   sa.sa_flags = SA_ONSTACK | SA_SIGINFO;
-  sa.sa_sigaction = EmptySignalAction;
-  ASSERT_EQ(0, sigaction(SIGALRM, &sa, NULL));
+  sa.sa_sigaction = no_op_sigaction;
+  ASSERT_EQ(0, sigaction_fn(sig, &sa, NULL));
 
   // Check that we can read it back.
-  memset(&sa, 0, sizeof(sa));
-  ASSERT_EQ(0, sigaction(SIGALRM, NULL, &sa));
-  ASSERT_TRUE(sa.sa_sigaction == EmptySignalAction);
+  sa = {};
+  ASSERT_EQ(0, sigaction_fn(sig, NULL, &sa));
+  ASSERT_TRUE(sa.sa_sigaction == no_op_sigaction);
   ASSERT_TRUE((void*) sa.sa_sigaction == (void*) sa.sa_handler);
   ASSERT_EQ(static_cast<unsigned>(SA_ONSTACK | SA_SIGINFO), sa.sa_flags & ~sa_restorer);
 
   // Put everything back how it was.
-  ASSERT_EQ(0, sigaction(SIGALRM, &original_sa, NULL));
+  ASSERT_EQ(0, sigaction_fn(sig, &original_sa, NULL));
+}
+
+TEST(signal, sigaction) {
+  TestSigAction(sigaction, sigaddset, SIGALRM);
+}
+
+TEST(signal, sigaction64_SIGRTMIN) {
+  TestSigAction(sigaction64, sigaddset64, SIGRTMIN);
 }
 
 TEST(signal, sys_signame) {
@@ -495,8 +503,7 @@
     "* https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=66dd34ad31e5963d72a700ec3f2449291d322921\n";
   static siginfo received;
 
-  struct sigaction handler;
-  memset(&handler, 0, sizeof(handler));
+  struct sigaction handler = {};
   handler.sa_sigaction = [](int, siginfo_t* siginfo, void*) { received = *siginfo; };
   handler.sa_flags = SA_SIGINFO;