6 files changed, 53 insertions, 8 deletions
diff --git a/libgo/misc/cgo/test/pkg_test.go b/libgo/misc/cgo/test/pkg_test.go
index 08e075c..26c50ad 100644
--- a/libgo/misc/cgo/test/pkg_test.go
+++ b/libgo/misc/cgo/test/pkg_test.go
@@ -32,7 +32,7 @@ func TestCrossPackageTests(t *testing.T) {
 		t.Skip("Can't exec cmd/go subprocess on Android.")
 	case "darwin":
 		switch runtime.GOARCH {
-		case "arm", "arm64":
+		case "arm64":
 			t.Skip("Can't exec cmd/go subprocess on iOS.")
 		}
 	}
diff --git a/libgo/misc/cgo/test/sigaltstack.go b/libgo/misc/cgo/test/sigaltstack.go
index 2c9b81c..8dfa1cb 100644
--- a/libgo/misc/cgo/test/sigaltstack.go
+++ b/libgo/misc/cgo/test/sigaltstack.go
@@ -14,15 +14,22 @@ package cgotest
 #include <stdlib.h>
 #include <string.h>
 
+#ifdef _AIX
+// On AIX, SIGSTKSZ is too small to handle Go sighandler.
+#define CSIGSTKSZ 0x4000
+#else
+#define CSIGSTKSZ SIGSTKSZ
+#endif
+
 static stack_t oss;
-static char signalStack[SIGSTKSZ];
+static char signalStack[CSIGSTKSZ];
 
 static void changeSignalStack(void) {
 	stack_t ss;
 	memset(&ss, 0, sizeof ss);
 	ss.ss_sp = signalStack;
 	ss.ss_flags = 0;
-	ss.ss_size = SIGSTKSZ;
+	ss.ss_size = CSIGSTKSZ;
 	if (sigaltstack(&ss, &oss) < 0) {
 		perror("sigaltstack");
 		abort();
@@ -55,10 +62,8 @@ import (
 
 func testSigaltstack(t *testing.T) {
 	switch {
-	case runtime.GOOS == "solaris", runtime.GOOS == "illumos", runtime.GOOS == "darwin" && (runtime.GOARCH == "arm" || runtime.GOARCH == "arm64"):
+	case runtime.GOOS == "solaris", runtime.GOOS == "illumos", runtime.GOOS == "darwin" && runtime.GOARCH == "arm64":
 		t.Skipf("switching signal stack not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
-	case runtime.GOOS == "darwin" && runtime.GOARCH == "386":
-		t.Skipf("sigaltstack fails on darwin/386")
 	}
 
 	C.changeSignalStack()
diff --git a/libgo/misc/cgo/test/test.go b/libgo/misc/cgo/test/test.go
index b014899..35bc3a1 100644
--- a/libgo/misc/cgo/test/test.go
+++ b/libgo/misc/cgo/test/test.go
@@ -897,6 +897,16 @@ static uint16_t issue31093F(uint16_t v) { return v; }
 
 // issue 32579
 typedef struct S32579 { unsigned char data[1]; } S32579;
+
+// issue 38649
+// Test that #define'd type aliases work.
+#define netbsd_gid unsigned int
+
+// issue 40494
+// Inconsistent handling of tagged enum and union types.
+enum Enum40494 { X_40494 };
+union Union40494 { int x; };
+void issue40494(enum Enum40494 e, union Union40494* up) {}
 */
 import "C"
 
@@ -2192,3 +2202,18 @@ func test32579(t *testing.T) {
 		t.Errorf("&s[0].data[0] failed: got %d, want %d", s[0].data[0], 1)
 	}
 }
+
+// issue 38649
+
+var issue38649 C.netbsd_gid = 42
+
+// issue 39877
+
+var issue39877 *C.void = nil
+
+// issue 40494
+// No runtime test; just make sure it compiles.
+
+func Issue40494() {
+	C.issue40494(C.enum_Enum40494(C.X_40494), (*C.union_Union40494)(nil))
+}
diff --git a/libgo/misc/cgo/test/testdata/issue27054/egl.h b/libgo/misc/cgo/test/testdata/issue27054/egl.h
index 33a759e..3079627 100644
--- a/libgo/misc/cgo/test/testdata/issue27054/egl.h
+++ b/libgo/misc/cgo/test/testdata/issue27054/egl.h
@@ -5,3 +5,4 @@
 // This is the relevant part of EGL/egl.h.
 
 typedef void *EGLDisplay;
+typedef void *EGLConfig;
diff --git a/libgo/misc/cgo/test/testdata/issue27054/test27054.go b/libgo/misc/cgo/test/testdata/issue27054/test27054.go
index 186f5bd..01bf43a 100644
--- a/libgo/misc/cgo/test/testdata/issue27054/test27054.go
+++ b/libgo/misc/cgo/test/testdata/issue27054/test27054.go
@@ -13,5 +13,9 @@ import (
 )
 
 func Test27054(t *testing.T) {
-	var _ C.EGLDisplay = 0 // Note: 0, not nil. That makes sure we use uintptr for this type.
+	var (
+		// Note: 0, not nil. That makes sure we use uintptr for these types.
+		_ C.EGLDisplay = 0
+		_ C.EGLConfig  = 0
+	)
 }
diff --git a/libgo/misc/cgo/test/testx.go b/libgo/misc/cgo/test/testx.go
index 42979b5..7fbc5c6 100644
--- a/libgo/misc/cgo/test/testx.go
+++ b/libgo/misc/cgo/test/testx.go
@@ -124,6 +124,11 @@ typedef struct {
 } Issue31891B;
 
 void callIssue31891(void);
+
+typedef struct {
+	int i;
+} Issue38408, *PIssue38408;
+
 */
 import "C"
 
@@ -159,7 +164,7 @@ func Add(x int) {
 }
 
 func testCthread(t *testing.T) {
-	if runtime.GOOS == "darwin" && (runtime.GOARCH == "arm" || runtime.GOARCH == "arm64") {
+	if runtime.GOOS == "darwin" && runtime.GOARCH == "arm64" {
 		t.Skip("the iOS exec wrapper is unable to properly handle the panic from Add")
 	}
 	sum.i = 0
@@ -552,3 +557,8 @@ func useIssue31891B(c *C.Issue31891B) {}
 func test31891(t *testing.T) {
 	C.callIssue31891()
 }
+
+// issue 38408
+// A typedef pointer can be used as the element type.
+// No runtime test; just make sure it compiles.
+var _ C.PIssue38408 = &C.Issue38408{i: 1}