diff --git a/src/cmd/compile/internal/types2/stdlib_test.go b/src/cmd/compile/internal/types2/stdlib_test.go
index fc541a4b45..2577abf6de 100644
--- a/src/cmd/compile/internal/types2/stdlib_test.go
+++ b/src/cmd/compile/internal/types2/stdlib_test.go
@@ -197,6 +197,15 @@ func TestStdFixed(t *testing.T) {
 		"issue48230.go",  // go/types doesn't check validity of //go:xxx directives
 		"issue49767.go",  // go/types does not have constraints on channel element size
 		"issue49814.go",  // go/types does not have constraints on array size
+
+		// These tests requires runtime/cgo.Incomplete, which is only available on some platforms.
+		// However, types2 does not know about build constraints.
+		"bug514.go",
+		"issue40954.go",
+		"issue42032.go",
+		"issue42076.go",
+		"issue46903.go",
+		"issue51733.go",
 	)
 }
 
diff --git a/src/go/types/stdlib_test.go b/src/go/types/stdlib_test.go
index d75729ac39..53333b69db 100644
--- a/src/go/types/stdlib_test.go
+++ b/src/go/types/stdlib_test.go
@@ -199,6 +199,15 @@ func TestStdFixed(t *testing.T) {
 		"issue48230.go",  // go/types doesn't check validity of //go:xxx directives
 		"issue49767.go",  // go/types does not have constraints on channel element size
 		"issue49814.go",  // go/types does not have constraints on array size
+
+		// These tests requires runtime/cgo.Incomplete, which is only available on some platforms.
+		// However, go/types does not know about build constraints.
+		"bug514.go",
+		"issue40954.go",
+		"issue42032.go",
+		"issue42076.go",
+		"issue46903.go",
+		"issue51733.go",
 	)
 }
 
diff --git a/test/fixedbugs/bug514.go b/test/fixedbugs/bug514.go
index 9b23185337..1a6c7f14dd 100644
--- a/test/fixedbugs/bug514.go
+++ b/test/fixedbugs/bug514.go
@@ -4,7 +4,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build cgo
+//go:build cgo && !aix
 
 package main
 
diff --git a/test/fixedbugs/issue40954.go b/test/fixedbugs/issue40954.go
index 0beaabb743..e268b808ca 100644
--- a/test/fixedbugs/issue40954.go
+++ b/test/fixedbugs/issue40954.go
@@ -4,7 +4,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build cgo
+//go:build cgo && !aix
 
 package main
 
diff --git a/test/fixedbugs/issue42032.go b/test/fixedbugs/issue42032.go
index eb11859101..68fbc89045 100644
--- a/test/fixedbugs/issue42032.go
+++ b/test/fixedbugs/issue42032.go
@@ -4,7 +4,7 @@
 // source code is governed by a BSD-style license that can be found in
 // the LICENSE file.
 
-//go:build cgo
+//go:build cgo && !aix
 
 package main
 
diff --git a/test/fixedbugs/issue42076.go b/test/fixedbugs/issue42076.go
index ef8db2da30..b958d0eeb5 100644
--- a/test/fixedbugs/issue42076.go
+++ b/test/fixedbugs/issue42076.go
@@ -4,7 +4,7 @@
 // source code is governed by a BSD-style license that can be found in
 // the LICENSE file.
 
-//go:build cgo
+//go:build cgo && !aix
 
 package main
 
diff --git a/test/fixedbugs/issue46903.go b/test/fixedbugs/issue46903.go
index d77564add2..90ceb9a86c 100644
--- a/test/fixedbugs/issue46903.go
+++ b/test/fixedbugs/issue46903.go
@@ -1,6 +1,5 @@
 // run
-//go:build goexperiment.unified && cgo
-// +build goexperiment.unified,cgo
+//go:build goexperiment.unified && cgo && !aix
 
 // TODO(mdempsky): Enable test unconditionally. This test should pass
 // for non-unified mode too.
diff --git a/test/fixedbugs/issue51733.go b/test/fixedbugs/issue51733.go
index 933c3e868c..757ef733c3 100644
--- a/test/fixedbugs/issue51733.go
+++ b/test/fixedbugs/issue51733.go
@@ -4,7 +4,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build cgo
+//go:build cgo && !aix
 
 package main