diff --git a/src/cmd/cgo/internal/testsanitizers/asan_test.go b/src/cmd/cgo/internal/testsanitizers/asan_test.go
index 1e85a5dda0e58..9bf48915e24c1 100644
--- a/src/cmd/cgo/internal/testsanitizers/asan_test.go
+++ b/src/cmd/cgo/internal/testsanitizers/asan_test.go
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build linux || (freebsd && amd64)
+
 package sanitizers_test
 
 import (
diff --git a/src/cmd/cgo/internal/testsanitizers/cc_test.go b/src/cmd/cgo/internal/testsanitizers/cc_test.go
index 67d281a8c5018..5facb37e68a51 100644
--- a/src/cmd/cgo/internal/testsanitizers/cc_test.go
+++ b/src/cmd/cgo/internal/testsanitizers/cc_test.go
@@ -2,6 +2,11 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+// This test uses the Pdeathsig field of syscall.SysProcAttr, so it only works
+// on platforms that support that.
+
+//go:build linux || (freebsd && amd64)
+
 // sanitizers_test checks the use of Go with sanitizers like msan, asan, etc.
 // See https://github.com/google/sanitizers.
 package sanitizers_test
diff --git a/src/cmd/cgo/internal/testsanitizers/cshared_test.go b/src/cmd/cgo/internal/testsanitizers/cshared_test.go
index 21b13ce4ed0dc..5a8e93d101ca8 100644
--- a/src/cmd/cgo/internal/testsanitizers/cshared_test.go
+++ b/src/cmd/cgo/internal/testsanitizers/cshared_test.go
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build linux || (freebsd && amd64)
+
 package sanitizers_test
 
 import (
diff --git a/src/cmd/cgo/internal/testsanitizers/empty_test.go b/src/cmd/cgo/internal/testsanitizers/empty_test.go
new file mode 100644
index 0000000000000..e7fed99551187
--- /dev/null
+++ b/src/cmd/cgo/internal/testsanitizers/empty_test.go
@@ -0,0 +1,8 @@
+// Copyright 2022 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// All of the actual test files have limited build constraints. This file
+// ensures there's at least one test file on every platform.
+
+package sanitizers_test
diff --git a/src/cmd/cgo/internal/testsanitizers/libfuzzer_test.go b/src/cmd/cgo/internal/testsanitizers/libfuzzer_test.go
index 345751b9c761f..f84c9f37ae82f 100644
--- a/src/cmd/cgo/internal/testsanitizers/libfuzzer_test.go
+++ b/src/cmd/cgo/internal/testsanitizers/libfuzzer_test.go
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build linux || (freebsd && amd64)
+
 package sanitizers_test
 
 import (
diff --git a/src/cmd/cgo/internal/testsanitizers/msan_test.go b/src/cmd/cgo/internal/testsanitizers/msan_test.go
index 96397e0a876a3..a05c545d2afda 100644
--- a/src/cmd/cgo/internal/testsanitizers/msan_test.go
+++ b/src/cmd/cgo/internal/testsanitizers/msan_test.go
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build linux || (freebsd && amd64)
+
 package sanitizers_test
 
 import (
diff --git a/src/cmd/cgo/internal/testsanitizers/tsan_test.go b/src/cmd/cgo/internal/testsanitizers/tsan_test.go
index f65d842363242..cb63f873f9013 100644
--- a/src/cmd/cgo/internal/testsanitizers/tsan_test.go
+++ b/src/cmd/cgo/internal/testsanitizers/tsan_test.go
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build linux || (freebsd && amd64)
+
 package sanitizers_test
 
 import (
diff --git a/src/cmd/dist/test.go b/src/cmd/dist/test.go
index 8cd8abc19ec17..1d8125c51d0b4 100644
--- a/src/cmd/dist/test.go
+++ b/src/cmd/dist/test.go
@@ -832,11 +832,7 @@ func (t *tester) registerTests() {
 		if t.supportedBuildmode("plugin") {
 			t.registerTest("cgo_testplugin", "", &goTest{pkg: "cmd/cgo/internal/testplugin", timeout: 600 * time.Second})
 		}
-		if goos == "linux" || (goos == "freebsd" && goarch == "amd64") {
-			// because Pdeathsig of syscall.SysProcAttr struct used in cmd/cgo/internal/testsanitizers is only
-			// supported on Linux and FreeBSD.
-			t.registerTest("cgo_testsanitizers", "", &goTest{pkg: "cmd/cgo/internal/testsanitizers", timeout: 5 * time.Minute})
-		}
+		t.registerTest("cgo_testsanitizers", "", &goTest{pkg: "cmd/cgo/internal/testsanitizers", timeout: 5 * time.Minute})
 		if t.hasBash() && goos != "android" && !t.iOS() && gohostos != "windows" {
 			t.registerTest("cgo_errors", "", &goTest{pkg: "cmd/cgo/internal/testerrors", timeout: 5 * time.Minute})
 		}