Adding upstream version 1.16.10.upstream/1.16.10upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

62 files changed, 1238 insertions, 0 deletions

diff --git a/misc/cgo/test/testdata/cgo_linux_test.go b/misc/cgo/test/testdata/cgo_linux_test.go
new file mode 100644
index 0000000..5cef09f
--- /dev/null
+++ b/misc/cgo/test/testdata/cgo_linux_test.go
@@ -0,0 +1,9 @@
+// Copyright 2012 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.
+
+package cgotest
+
+import "testing"
+
+func Test9400(t *testing.T) { test9400(t) }
diff --git a/misc/cgo/test/testdata/cgo_test.go b/misc/cgo/test/testdata/cgo_test.go
new file mode 100644
index 0000000..ffa076f
--- /dev/null
+++ b/misc/cgo/test/testdata/cgo_test.go
@@ -0,0 +1,18 @@
+// Copyright 2011 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.
+
+package cgotest
+
+import "testing"
+
+// The actual test functions are in non-_test.go files
+// so that they can use cgo (import "C").
+// These wrappers are here for gotest to find.
+
+func Test8756(t *testing.T)     { test8756(t) }
+func Test9026(t *testing.T)     { test9026(t) }
+func Test9510(t *testing.T)     { test9510(t) }
+func Test20266(t *testing.T)    { test20266(t) }
+func Test26213(t *testing.T)    { test26213(t) }
+func TestGCC68255(t *testing.T) { testGCC68255(t) }
diff --git a/misc/cgo/test/testdata/gcc68255.go b/misc/cgo/test/testdata/gcc68255.go
new file mode 100644
index 0000000..b431462
--- /dev/null
+++ b/misc/cgo/test/testdata/gcc68255.go
@@ -0,0 +1,17 @@
+// Copyright 2015 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.
+
+package cgotest
+
+import (
+	"testing"
+
+	"cgotest/gcc68255"
+)
+
+func testGCC68255(t *testing.T) {
+	if !gcc68255.F() {
+		t.Error("C global variable was not initialized")
+	}
+}
diff --git a/misc/cgo/test/testdata/gcc68255/a.go b/misc/cgo/test/testdata/gcc68255/a.go
new file mode 100644
index 0000000..e106dee
--- /dev/null
+++ b/misc/cgo/test/testdata/gcc68255/a.go
@@ -0,0 +1,17 @@
+// Copyright 2015 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.
+
+// Test that it's OK to have C code that does nothing other than
+// initialize a global variable.  This used to fail with gccgo.
+
+package gcc68255
+
+/*
+#include "c.h"
+*/
+import "C"
+
+func F() bool {
+	return C.v != nil
+}
diff --git a/misc/cgo/test/testdata/gcc68255/c.c b/misc/cgo/test/testdata/gcc68255/c.c
new file mode 100644
index 0000000..a4fe193
--- /dev/null
+++ b/misc/cgo/test/testdata/gcc68255/c.c
@@ -0,0 +1,8 @@
+// Copyright 2015 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.
+
+static void f(void) {
+}
+
+void (*v)(void) = f;
diff --git a/misc/cgo/test/testdata/gcc68255/c.h b/misc/cgo/test/testdata/gcc68255/c.h
new file mode 100644
index 0000000..05ecd81
--- /dev/null
+++ b/misc/cgo/test/testdata/gcc68255/c.h
@@ -0,0 +1,5 @@
+// Copyright 2015 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.
+
+extern void (*v)(void);
diff --git a/misc/cgo/test/testdata/issue20266.go b/misc/cgo/test/testdata/issue20266.go
new file mode 100644
index 0000000..9f95086
--- /dev/null
+++ b/misc/cgo/test/testdata/issue20266.go
@@ -0,0 +1,21 @@
+// Copyright 2017 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.
+
+// Issue 20266: use -I with a relative path.
+
+package cgotest
+
+/*
+#cgo CFLAGS: -I issue20266 -Iissue20266 -Ddef20266
+#include "issue20266.h"
+*/
+import "C"
+
+import "testing"
+
+func test20266(t *testing.T) {
+	if got, want := C.issue20266, 20266; got != want {
+		t.Errorf("got %d, want %d", got, want)
+	}
+}
diff --git a/misc/cgo/test/testdata/issue20266/issue20266.h b/misc/cgo/test/testdata/issue20266/issue20266.h
new file mode 100644
index 0000000..8d3258e
--- /dev/null
+++ b/misc/cgo/test/testdata/issue20266/issue20266.h
@@ -0,0 +1,9 @@
+// Copyright 2017 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.
+
+#define issue20266 20266
+
+#ifndef def20266
+#error "expected def20266 to be defined"
+#endif
diff --git a/misc/cgo/test/testdata/issue23555.go b/misc/cgo/test/testdata/issue23555.go
new file mode 100644
index 0000000..4e944b5
--- /dev/null
+++ b/misc/cgo/test/testdata/issue23555.go
@@ -0,0 +1,11 @@
+// Copyright 2018 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.
+
+// Test that we can have two identical cgo packages in a single binary.
+// No runtime test; just make sure it compiles.
+
+package cgotest
+
+import _ "cgotest/issue23555a"
+import _ "cgotest/issue23555b"
diff --git a/misc/cgo/test/testdata/issue23555a/a.go b/misc/cgo/test/testdata/issue23555a/a.go
new file mode 100644
index 0000000..cb6626b
--- /dev/null
+++ b/misc/cgo/test/testdata/issue23555a/a.go
@@ -0,0 +1,12 @@
+// Copyright 2018 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.
+
+package issue23555
+
+// #include <stdlib.h>
+import "C"
+
+func X() {
+	C.free(C.malloc(10))
+}
diff --git a/misc/cgo/test/testdata/issue23555b/a.go b/misc/cgo/test/testdata/issue23555b/a.go
new file mode 100644
index 0000000..cb6626b
--- /dev/null
+++ b/misc/cgo/test/testdata/issue23555b/a.go
@@ -0,0 +1,12 @@
+// Copyright 2018 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.
+
+package issue23555
+
+// #include <stdlib.h>
+import "C"
+
+func X() {
+	C.free(C.malloc(10))
+}
diff --git a/misc/cgo/test/testdata/issue24161_darwin_test.go b/misc/cgo/test/testdata/issue24161_darwin_test.go
new file mode 100644
index 0000000..e60eb4e
--- /dev/null
+++ b/misc/cgo/test/testdata/issue24161_darwin_test.go
@@ -0,0 +1,31 @@
+// Copyright 2018 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.
+
+package cgotest
+
+import (
+	"testing"
+
+	"cgotest/issue24161arg"
+	"cgotest/issue24161e0"
+	"cgotest/issue24161e1"
+	"cgotest/issue24161e2"
+	"cgotest/issue24161res"
+)
+
+func Test24161Arg(t *testing.T) {
+	issue24161arg.Test(t)
+}
+func Test24161Res(t *testing.T) {
+	issue24161res.Test(t)
+}
+func Test24161Example0(t *testing.T) {
+	issue24161e0.Test(t)
+}
+func Test24161Example1(t *testing.T) {
+	issue24161e1.Test(t)
+}
+func Test24161Example2(t *testing.T) {
+	issue24161e2.Test(t)
+}
diff --git a/misc/cgo/test/testdata/issue24161arg/def.go b/misc/cgo/test/testdata/issue24161arg/def.go
new file mode 100644
index 0000000..d33479a
--- /dev/null
+++ b/misc/cgo/test/testdata/issue24161arg/def.go
@@ -0,0 +1,17 @@
+// Copyright 2018 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.
+
+// +build darwin
+
+package issue24161arg
+
+/*
+#cgo LDFLAGS: -framework CoreFoundation
+#include <CoreFoundation/CoreFoundation.h>
+*/
+import "C"
+
+func test24161array() C.CFArrayRef {
+	return C.CFArrayCreate(0, nil, 0, nil)
+}
diff --git a/misc/cgo/test/testdata/issue24161arg/use.go b/misc/cgo/test/testdata/issue24161arg/use.go
new file mode 100644
index 0000000..3e74944
--- /dev/null
+++ b/misc/cgo/test/testdata/issue24161arg/use.go
@@ -0,0 +1,19 @@
+// Copyright 2018 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.
+
+// +build darwin
+
+package issue24161arg
+
+/*
+#cgo LDFLAGS: -framework CoreFoundation
+#include <CoreFoundation/CoreFoundation.h>
+*/
+import "C"
+import "testing"
+
+func Test(t *testing.T) {
+	a := test24161array()
+	C.CFArrayCreateCopy(0, a)
+}
diff --git a/misc/cgo/test/testdata/issue24161e0/main.go b/misc/cgo/test/testdata/issue24161e0/main.go
new file mode 100644
index 0000000..efe5345
--- /dev/null
+++ b/misc/cgo/test/testdata/issue24161e0/main.go
@@ -0,0 +1,29 @@
+// Copyright 2018 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.
+
+// +build darwin
+
+package issue24161e0
+
+/*
+#cgo CFLAGS: -x objective-c
+#cgo LDFLAGS: -framework CoreFoundation -framework Security
+#include <TargetConditionals.h>
+#include <CoreFoundation/CoreFoundation.h>
+#include <Security/Security.h>
+#if TARGET_OS_IPHONE == 0 && __MAC_OS_X_VERSION_MAX_ALLOWED < 101200
+  typedef CFStringRef SecKeyAlgorithm;
+  static CFDataRef SecKeyCreateSignature(SecKeyRef key, SecKeyAlgorithm algorithm, CFDataRef dataToSign, CFErrorRef *error){return NULL;}
+  #define kSecKeyAlgorithmECDSASignatureDigestX962SHA1 foo()
+  static SecKeyAlgorithm foo(void){return NULL;}
+#endif
+*/
+import "C"
+import "testing"
+
+func f1() {
+	C.SecKeyCreateSignature(0, C.kSecKeyAlgorithmECDSASignatureDigestX962SHA1, 0, nil)
+}
+
+func Test(t *testing.T) {}
diff --git a/misc/cgo/test/testdata/issue24161e1/main.go b/misc/cgo/test/testdata/issue24161e1/main.go
new file mode 100644
index 0000000..82bf172
--- /dev/null
+++ b/misc/cgo/test/testdata/issue24161e1/main.go
@@ -0,0 +1,38 @@
+// Copyright 2018 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.
+
+// +build darwin
+
+package issue24161e1
+
+/*
+#cgo CFLAGS: -x objective-c
+#cgo LDFLAGS: -framework CoreFoundation -framework Security
+#include <TargetConditionals.h>
+#include <CoreFoundation/CoreFoundation.h>
+#include <Security/Security.h>
+#if TARGET_OS_IPHONE == 0 && __MAC_OS_X_VERSION_MAX_ALLOWED < 101200
+  typedef CFStringRef SecKeyAlgorithm;
+  static CFDataRef SecKeyCreateSignature(SecKeyRef key, SecKeyAlgorithm algorithm, CFDataRef dataToSign, CFErrorRef *error){return NULL;}
+  #define kSecKeyAlgorithmECDSASignatureDigestX962SHA1 foo()
+  static SecKeyAlgorithm foo(void){return NULL;}
+#endif
+*/
+import "C"
+import (
+	"fmt"
+	"testing"
+)
+
+func f1() {
+	C.SecKeyCreateSignature(0, C.kSecKeyAlgorithmECDSASignatureDigestX962SHA1, 0, nil)
+}
+
+func f2(e C.CFErrorRef) {
+	if desc := C.CFErrorCopyDescription(e); desc != 0 {
+		fmt.Println(desc)
+	}
+}
+
+func Test(t *testing.T) {}
diff --git a/misc/cgo/test/testdata/issue24161e2/main.go b/misc/cgo/test/testdata/issue24161e2/main.go
new file mode 100644
index 0000000..82d2ec1
--- /dev/null
+++ b/misc/cgo/test/testdata/issue24161e2/main.go
@@ -0,0 +1,40 @@
+// Copyright 2018 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.
+
+// +build darwin
+
+package issue24161e2
+
+/*
+#cgo CFLAGS: -x objective-c
+#cgo LDFLAGS: -framework CoreFoundation -framework Security
+#include <TargetConditionals.h>
+#include <CoreFoundation/CoreFoundation.h>
+#include <Security/Security.h>
+#if TARGET_OS_IPHONE == 0 && __MAC_OS_X_VERSION_MAX_ALLOWED < 101200
+  typedef CFStringRef SecKeyAlgorithm;
+  static CFDataRef SecKeyCreateSignature(SecKeyRef key, SecKeyAlgorithm algorithm, CFDataRef dataToSign, CFErrorRef *error){return NULL;}
+  #define kSecKeyAlgorithmECDSASignatureDigestX962SHA1 foo()
+  static SecKeyAlgorithm foo(void){return NULL;}
+#endif
+*/
+import "C"
+import (
+	"fmt"
+	"testing"
+)
+
+var _ C.CFStringRef
+
+func f1() {
+	C.SecKeyCreateSignature(0, C.kSecKeyAlgorithmECDSASignatureDigestX962SHA1, 0, nil)
+}
+
+func f2(e C.CFErrorRef) {
+	if desc := C.CFErrorCopyDescription(e); desc != 0 {
+		fmt.Println(desc)
+	}
+}
+
+func Test(t *testing.T) {}
diff --git a/misc/cgo/test/testdata/issue24161res/restype.go b/misc/cgo/test/testdata/issue24161res/restype.go
new file mode 100644
index 0000000..e5719f2
--- /dev/null
+++ b/misc/cgo/test/testdata/issue24161res/restype.go
@@ -0,0 +1,23 @@
+// Copyright 2018 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.
+
+// +build darwin
+
+package issue24161res
+
+/*
+#cgo LDFLAGS: -framework CoreFoundation
+#include <CoreFoundation/CoreFoundation.h>
+*/
+import "C"
+import (
+	"reflect"
+	"testing"
+)
+
+func Test(t *testing.T) {
+	if k := reflect.TypeOf(C.CFArrayCreate(0, nil, 0, nil)).Kind(); k != reflect.Uintptr {
+		t.Fatalf("bad kind %s\n", k)
+	}
+}
diff --git a/misc/cgo/test/testdata/issue26213/jni.h b/misc/cgo/test/testdata/issue26213/jni.h
new file mode 100644
index 0000000..0c76979
--- /dev/null
+++ b/misc/cgo/test/testdata/issue26213/jni.h
@@ -0,0 +1,29 @@
+// Copyright 2018 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.
+
+// It's going to be hard to include a whole real JVM to test this.
+// So we'll simulate a really easy JVM using just the parts we need.
+
+// This is the relevant part of jni.h.
+
+// On Android NDK16, jobject is defined like this in C and C++
+typedef void* jobject;
+
+typedef jobject jclass;
+typedef jobject jthrowable;
+typedef jobject jstring;
+typedef jobject jarray;
+typedef jarray jbooleanArray;
+typedef jarray jbyteArray;
+typedef jarray jcharArray;
+typedef jarray jshortArray;
+typedef jarray jintArray;
+typedef jarray jlongArray;
+typedef jarray jfloatArray;
+typedef jarray jdoubleArray;
+typedef jarray jobjectArray;
+
+typedef jobject jweak;
+
+// Note: jvalue is already a non-pointer type due to it being a C union.
diff --git a/misc/cgo/test/testdata/issue26213/test26213.go b/misc/cgo/test/testdata/issue26213/test26213.go
new file mode 100644
index 0000000..5d1f637
--- /dev/null
+++ b/misc/cgo/test/testdata/issue26213/test26213.go
@@ -0,0 +1,46 @@
+// Copyright 2018 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.
+
+package issue26213
+
+/*
+#include "jni.h"
+*/
+import "C"
+import (
+	"testing"
+)
+
+func Test26213(t *testing.T) {
+	var x1 C.jobject = 0 // Note: 0, not nil. That makes sure we use uintptr for these types.
+	_ = x1
+	var x2 C.jclass = 0
+	_ = x2
+	var x3 C.jthrowable = 0
+	_ = x3
+	var x4 C.jstring = 0
+	_ = x4
+	var x5 C.jarray = 0
+	_ = x5
+	var x6 C.jbooleanArray = 0
+	_ = x6
+	var x7 C.jbyteArray = 0
+	_ = x7
+	var x8 C.jcharArray = 0
+	_ = x8
+	var x9 C.jshortArray = 0
+	_ = x9
+	var x10 C.jintArray = 0
+	_ = x10
+	var x11 C.jlongArray = 0
+	_ = x11
+	var x12 C.jfloatArray = 0
+	_ = x12
+	var x13 C.jdoubleArray = 0
+	_ = x13
+	var x14 C.jobjectArray = 0
+	_ = x14
+	var x15 C.jweak = 0
+	_ = x15
+}
diff --git a/misc/cgo/test/testdata/issue26430.go b/misc/cgo/test/testdata/issue26430.go
new file mode 100644
index 0000000..14c7a7c
--- /dev/null
+++ b/misc/cgo/test/testdata/issue26430.go
@@ -0,0 +1,10 @@
+// Copyright 2018 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.
+
+// Issue 26430: incomplete typedef leads to inconsistent typedefs error.
+// No runtime test; just make sure it compiles.
+
+package cgotest
+
+import _ "cgotest/issue26430"
diff --git a/misc/cgo/test/testdata/issue26430/a.go b/misc/cgo/test/testdata/issue26430/a.go
new file mode 100644
index 0000000..fbaa46b
--- /dev/null
+++ b/misc/cgo/test/testdata/issue26430/a.go
@@ -0,0 +1,13 @@
+// Copyright 2018 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.
+
+package a
+
+// typedef struct S ST;
+// static ST* F() { return 0; }
+import "C"
+
+func F1() {
+	C.F()
+}
diff --git a/misc/cgo/test/testdata/issue26430/b.go b/misc/cgo/test/testdata/issue26430/b.go
new file mode 100644
index 0000000..a7c527c
--- /dev/null
+++ b/misc/cgo/test/testdata/issue26430/b.go
@@ -0,0 +1,13 @@
+// Copyright 2018 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.
+
+package a
+
+// typedef struct S ST;
+// struct S { int f; };
+import "C"
+
+func F2(p *C.ST) {
+	p.f = 1
+}
diff --git a/misc/cgo/test/testdata/issue26743.go b/misc/cgo/test/testdata/issue26743.go
new file mode 100644
index 0000000..000fb2b
--- /dev/null
+++ b/misc/cgo/test/testdata/issue26743.go
@@ -0,0 +1,10 @@
+// Copyright 2018 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.
+
+// Issue 26743: typedef of uint leads to inconsistent typedefs error.
+// No runtime test; just make sure it compiles.
+
+package cgotest
+
+import _ "cgotest/issue26743"
diff --git a/misc/cgo/test/testdata/issue26743/a.go b/misc/cgo/test/testdata/issue26743/a.go
new file mode 100644
index 0000000..a3df179
--- /dev/null
+++ b/misc/cgo/test/testdata/issue26743/a.go
@@ -0,0 +1,11 @@
+// Copyright 2018 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.
+
+package issue26743
+
+// typedef unsigned int uint;
+// int C1(uint x) { return x; }
+import "C"
+
+var V1 = C.C1(0)
diff --git a/misc/cgo/test/testdata/issue26743/b.go b/misc/cgo/test/testdata/issue26743/b.go
new file mode 100644
index 0000000..c5f1ae4
--- /dev/null
+++ b/misc/cgo/test/testdata/issue26743/b.go
@@ -0,0 +1,9 @@
+// Copyright 2018 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.
+
+package issue26743
+
+import "C"
+
+var V2 C.uint
diff --git a/misc/cgo/test/testdata/issue27054/egl.h b/misc/cgo/test/testdata/issue27054/egl.h
new file mode 100644
index 0000000..3079627
--- /dev/null
+++ b/misc/cgo/test/testdata/issue27054/egl.h
@@ -0,0 +1,8 @@
+// Copyright 2018 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.
+
+// This is the relevant part of EGL/egl.h.
+
+typedef void *EGLDisplay;
+typedef void *EGLConfig;
diff --git a/misc/cgo/test/testdata/issue27054/test27054.go b/misc/cgo/test/testdata/issue27054/test27054.go
new file mode 100644
index 0000000..01bf43a
--- /dev/null
+++ b/misc/cgo/test/testdata/issue27054/test27054.go
@@ -0,0 +1,21 @@
+// Copyright 2018 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.
+
+package issue27054
+
+/*
+#include "egl.h"
+*/
+import "C"
+import (
+	"testing"
+)
+
+func Test27054(t *testing.T) {
+	var (
+		// Note: 0, not nil. That makes sure we use uintptr for these types.
+		_ C.EGLDisplay = 0
+		_ C.EGLConfig  = 0
+	)
+}
diff --git a/misc/cgo/test/testdata/issue27340.go b/misc/cgo/test/testdata/issue27340.go
new file mode 100644
index 0000000..337550f
--- /dev/null
+++ b/misc/cgo/test/testdata/issue27340.go
@@ -0,0 +1,12 @@
+// Copyright 2018 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.
+
+// Failed to resolve typedefs consistently.
+// No runtime test; just make sure it compiles.
+
+package cgotest
+
+import "cgotest/issue27340"
+
+var issue27340Var = issue27340.Issue27340GoFunc
diff --git a/misc/cgo/test/testdata/issue27340/a.go b/misc/cgo/test/testdata/issue27340/a.go
new file mode 100644
index 0000000..f5b120c
--- /dev/null
+++ b/misc/cgo/test/testdata/issue27340/a.go
@@ -0,0 +1,42 @@
+// Copyright 2018 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.
+
+// Failed to resolve typedefs consistently.
+// No runtime test; just make sure it compiles.
+// In separate directory to isolate #pragma GCC diagnostic.
+
+package issue27340
+
+// We use the #pragma to avoid a compiler warning about incompatible
+// pointer types, because we generate code passing a struct ptr rather
+// than using the typedef. This warning is expected and does not break
+// a normal build.
+// We can only disable -Wincompatible-pointer-types starting with GCC 5.
+
+// #if __GNU_MAJOR__ >= 5
+//
+// #pragma GCC diagnostic ignored "-Wincompatible-pointer-types"
+//
+// typedef struct {
+// 	int a;
+// } issue27340Struct, *issue27340Ptr;
+//
+// static void issue27340CFunc(issue27340Ptr p) {}
+//
+// #else /* _GNU_MAJOR_ < 5 */
+//
+// typedef struct {
+// 	int a;
+// } issue27340Struct;
+//
+// static issue27340Struct* issue27340Ptr(issue27340Struct* p) { return p; }
+//
+// static void issue27340CFunc(issue27340Struct *p) {}
+// #endif /* _GNU_MAJOR_ < 5 */
+import "C"
+
+func Issue27340GoFunc() {
+	var s C.issue27340Struct
+	C.issue27340CFunc(C.issue27340Ptr(&s))
+}
diff --git a/misc/cgo/test/testdata/issue29563.go b/misc/cgo/test/testdata/issue29563.go
new file mode 100644
index 0000000..84def3c
--- /dev/null
+++ b/misc/cgo/test/testdata/issue29563.go
@@ -0,0 +1,12 @@
+// Copyright 2019 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.
+
+// +build !windows
+
+// Issue 29563: internal linker fails on duplicate weak symbols.
+// No runtime test; just make sure it compiles.
+
+package cgotest
+
+import _ "cgotest/issue29563"
diff --git a/misc/cgo/test/testdata/issue29563/weak.go b/misc/cgo/test/testdata/issue29563/weak.go
new file mode 100644
index 0000000..21cf635
--- /dev/null
+++ b/misc/cgo/test/testdata/issue29563/weak.go
@@ -0,0 +1,13 @@
+// Copyright 2019 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.
+
+package issue29563
+
+//int foo1();
+//int foo2();
+import "C"
+
+func Bar() int {
+	return int(C.foo1()) + int(C.foo2())
+}
diff --git a/misc/cgo/test/testdata/issue29563/weak1.c b/misc/cgo/test/testdata/issue29563/weak1.c
new file mode 100644
index 0000000..86a2273
--- /dev/null
+++ b/misc/cgo/test/testdata/issue29563/weak1.c
@@ -0,0 +1,11 @@
+// Copyright 2019 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.
+
+extern int weaksym __attribute__((__weak__));
+int weaksym = 42;
+
+int foo1()
+{
+	return weaksym;
+}
diff --git a/misc/cgo/test/testdata/issue29563/weak2.c b/misc/cgo/test/testdata/issue29563/weak2.c
new file mode 100644
index 0000000..e01eae8
--- /dev/null
+++ b/misc/cgo/test/testdata/issue29563/weak2.c
@@ -0,0 +1,11 @@
+// Copyright 2019 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.
+
+extern int weaksym __attribute__((__weak__));
+int weaksym = 42;
+
+int foo2()
+{
+	return weaksym;
+}
diff --git a/misc/cgo/test/testdata/issue30527.go b/misc/cgo/test/testdata/issue30527.go
new file mode 100644
index 0000000..4ea7d31
--- /dev/null
+++ b/misc/cgo/test/testdata/issue30527.go
@@ -0,0 +1,14 @@
+// Copyright 2019 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.
+
+// Issue 30527: function call rewriting casts untyped
+// constants to int because of ":=" usage.
+
+package cgotest
+
+import "cgotest/issue30527"
+
+func issue30527G() {
+	issue30527.G(nil)
+}
diff --git a/misc/cgo/test/testdata/issue30527/a.go b/misc/cgo/test/testdata/issue30527/a.go
new file mode 100644
index 0000000..eb50147
--- /dev/null
+++ b/misc/cgo/test/testdata/issue30527/a.go
@@ -0,0 +1,19 @@
+// Copyright 2019 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.
+
+package issue30527
+
+import "math"
+
+/*
+#include <inttypes.h>
+
+static void issue30527F(char **p, uint64_t mod, uint32_t unused) {}
+*/
+import "C"
+
+func G(p **C.char) {
+	C.issue30527F(p, math.MaxUint64, 1)
+	C.issue30527F(p, 1<<64-1, Z)
+}
diff --git a/misc/cgo/test/testdata/issue30527/b.go b/misc/cgo/test/testdata/issue30527/b.go
new file mode 100644
index 0000000..87e8255
--- /dev/null
+++ b/misc/cgo/test/testdata/issue30527/b.go
@@ -0,0 +1,11 @@
+// Copyright 2019 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.
+
+package issue30527
+
+const (
+	X = 1 << iota
+	Y
+	Z
+)
diff --git a/misc/cgo/test/testdata/issue41761.go b/misc/cgo/test/testdata/issue41761.go
new file mode 100644
index 0000000..919c749
--- /dev/null
+++ b/misc/cgo/test/testdata/issue41761.go
@@ -0,0 +1,20 @@
+// Copyright 2020 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.
+
+package cgotest
+
+/*
+   typedef struct S S;
+*/
+import "C"
+
+import (
+	"cgotest/issue41761a"
+	"testing"
+)
+
+func test41761(t *testing.T) {
+	var x issue41761a.T
+	_ = (*C.struct_S)(x.X)
+}
diff --git a/misc/cgo/test/testdata/issue41761a/a.go b/misc/cgo/test/testdata/issue41761a/a.go
new file mode 100644
index 0000000..ca5c181
--- /dev/null
+++ b/misc/cgo/test/testdata/issue41761a/a.go
@@ -0,0 +1,14 @@
+// Copyright 2020 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.
+
+package issue41761a
+
+/*
+   typedef struct S S;
+*/
+import "C"
+
+type T struct {
+	X *C.S
+}
diff --git a/misc/cgo/test/testdata/issue8756.go b/misc/cgo/test/testdata/issue8756.go
new file mode 100644
index 0000000..406c64c
--- /dev/null
+++ b/misc/cgo/test/testdata/issue8756.go
@@ -0,0 +1,17 @@
+package cgotest
+
+/*
+#cgo LDFLAGS: -lm
+#include <math.h>
+*/
+import "C"
+import (
+	"testing"
+
+	"cgotest/issue8756"
+)
+
+func test8756(t *testing.T) {
+	issue8756.Pow()
+	C.pow(1, 2)
+}
diff --git a/misc/cgo/test/testdata/issue8756/issue8756.go b/misc/cgo/test/testdata/issue8756/issue8756.go
new file mode 100644
index 0000000..5f6b777
--- /dev/null
+++ b/misc/cgo/test/testdata/issue8756/issue8756.go
@@ -0,0 +1,11 @@
+package issue8756
+
+/*
+#cgo LDFLAGS: -lm
+#include <math.h>
+*/
+import "C"
+
+func Pow() {
+	C.pow(1, 2)
+}
diff --git a/misc/cgo/test/testdata/issue8828.go b/misc/cgo/test/testdata/issue8828.go
new file mode 100644
index 0000000..0bca0f2
--- /dev/null
+++ b/misc/cgo/test/testdata/issue8828.go
@@ -0,0 +1,16 @@
+// compile
+
+// Copyright 2014 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.
+
+// Issue 8828: compiling a file with -compiler=gccgo fails if a .c file
+// has the same name as compiled directory.
+
+package cgotest
+
+import "cgotest/issue8828"
+
+func p() {
+	issue8828.Bar()
+}
diff --git a/misc/cgo/test/testdata/issue8828/issue8828.c b/misc/cgo/test/testdata/issue8828/issue8828.c
new file mode 100644
index 0000000..27ec23a
--- /dev/null
+++ b/misc/cgo/test/testdata/issue8828/issue8828.c
@@ -0,0 +1,7 @@
+// Copyright 2014 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.
+
+void foo()
+{
+}
diff --git a/misc/cgo/test/testdata/issue8828/trivial.go b/misc/cgo/test/testdata/issue8828/trivial.go
new file mode 100644
index 0000000..e7b9a4e
--- /dev/null
+++ b/misc/cgo/test/testdata/issue8828/trivial.go
@@ -0,0 +1,8 @@
+package issue8828
+
+//void foo();
+import "C"
+
+func Bar() {
+	C.foo()
+}
diff --git a/misc/cgo/test/testdata/issue9026.go b/misc/cgo/test/testdata/issue9026.go
new file mode 100644
index 0000000..3f48881
--- /dev/null
+++ b/misc/cgo/test/testdata/issue9026.go
@@ -0,0 +1,9 @@
+package cgotest
+
+import (
+	"testing"
+
+	"cgotest/issue9026"
+)
+
+func test9026(t *testing.T) { issue9026.Test(t) }
diff --git a/misc/cgo/test/testdata/issue9026/issue9026.go b/misc/cgo/test/testdata/issue9026/issue9026.go
new file mode 100644
index 0000000..ff269ca
--- /dev/null
+++ b/misc/cgo/test/testdata/issue9026/issue9026.go
@@ -0,0 +1,36 @@
+package issue9026
+
+// This file appears in its own package since the assertion tests the
+// per-package counter used to create fresh identifiers.
+
+/*
+typedef struct { int i; } git_merge_file_input;
+
+typedef struct { int j; } git_merge_file_options;
+
+void git_merge_file(
+        git_merge_file_input *in,
+        git_merge_file_options *opts) {}
+*/
+import "C"
+import (
+	"fmt"
+	"testing"
+)
+
+func Test(t *testing.T) {
+	var in C.git_merge_file_input
+	var opts *C.git_merge_file_options
+	C.git_merge_file(&in, opts)
+
+	// Test that the generated type names are deterministic.
+	// (Previously this would fail about 10% of the time.)
+	//
+	// Brittle: the assertion may fail spuriously when the algorithm
+	// changes, but should remain stable otherwise.
+	got := fmt.Sprintf("%T %T", in, opts)
+	want := "issue9026._Ctype_struct___0 *issue9026._Ctype_struct___1"
+	if got != want {
+		t.Errorf("Non-deterministic type names: got %s, want %s", got, want)
+	}
+}
diff --git a/misc/cgo/test/testdata/issue9400/asm_386.s b/misc/cgo/test/testdata/issue9400/asm_386.s
new file mode 100644
index 0000000..7f158b5
--- /dev/null
+++ b/misc/cgo/test/testdata/issue9400/asm_386.s
@@ -0,0 +1,27 @@
+// Copyright 2014 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.
+
+// +build !gccgo
+
+#include "textflag.h"
+
+TEXT ·RewindAndSetgid(SB),NOSPLIT,$0-0
+	MOVL	$·Baton(SB), BX
+	// Rewind stack pointer so anything that happens on the stack
+	// will clobber the test pattern created by the caller
+	ADDL	$(1024 * 8), SP
+
+	// Ask signaller to setgid
+	MOVL	$1, (BX)
+
+	// Wait for setgid completion
+loop:
+	PAUSE
+	MOVL	(BX), AX
+	CMPL	AX, $0
+	JNE	loop
+
+	// Restore stack
+	SUBL	$(1024 * 8), SP
+	RET
diff --git a/misc/cgo/test/testdata/issue9400/asm_amd64x.s b/misc/cgo/test/testdata/issue9400/asm_amd64x.s
new file mode 100644
index 0000000..48b8619
--- /dev/null
+++ b/misc/cgo/test/testdata/issue9400/asm_amd64x.s
@@ -0,0 +1,27 @@
+// Copyright 2014 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.
+
+// +build amd64 amd64p32
+// +build !gccgo
+
+#include "textflag.h"
+
+TEXT ·RewindAndSetgid(SB),NOSPLIT,$0-0
+	// Rewind stack pointer so anything that happens on the stack
+	// will clobber the test pattern created by the caller
+	ADDQ	$(1024 * 8), SP
+
+	// Ask signaller to setgid
+	MOVL	$1, ·Baton(SB)
+
+	// Wait for setgid completion
+loop:
+	PAUSE
+	MOVL	·Baton(SB), AX
+	CMPL	AX, $0
+	JNE	loop
+
+	// Restore stack
+	SUBQ	$(1024 * 8), SP
+	RET
diff --git a/misc/cgo/test/testdata/issue9400/asm_arm.s b/misc/cgo/test/testdata/issue9400/asm_arm.s
new file mode 100644
index 0000000..96c2785
--- /dev/null
+++ b/misc/cgo/test/testdata/issue9400/asm_arm.s
@@ -0,0 +1,39 @@
+// Copyright 2014 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.
+
+// +build !gccgo
+
+#include "textflag.h"
+
+TEXT cas<>(SB),NOSPLIT,$0
+	MOVW	$0xffff0fc0, R15 // R15 is PC
+
+TEXT ·RewindAndSetgid(SB),NOSPLIT|NOFRAME,$0-0
+	// Save link register
+	MOVW	R14, R4
+
+	// Rewind stack pointer so anything that happens on the stack
+	// will clobber the test pattern created by the caller
+	ADD	$(1024 * 8), R13
+
+	// Ask signaller to setgid
+	MOVW	$·Baton(SB), R2
+storeloop:
+	MOVW	0(R2), R0
+	MOVW	$1, R1
+	BL	cas<>(SB)
+	BCC	storeloop
+
+	// Wait for setgid completion
+loop:
+	MOVW	$0, R0
+	MOVW	$0, R1
+	BL	cas<>(SB)
+	BCC	loop
+
+	// Restore stack
+	SUB	$(1024 * 8), R13
+
+	MOVW	R4, R14
+	RET
diff --git a/misc/cgo/test/testdata/issue9400/asm_arm64.s b/misc/cgo/test/testdata/issue9400/asm_arm64.s
new file mode 100644
index 0000000..2ebbfcc
--- /dev/null
+++ b/misc/cgo/test/testdata/issue9400/asm_arm64.s
@@ -0,0 +1,39 @@
+// Copyright 2014 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.
+
+// +build !gccgo
+
+#include "textflag.h"
+
+TEXT ·RewindAndSetgid(SB),NOSPLIT|NOFRAME,$0-0
+	// Save link register
+	MOVD	R30, R9
+
+	// Rewind stack pointer so anything that happens on the stack
+	// will clobber the test pattern created by the caller
+	ADD	$(1024 * 8), RSP
+
+	// Ask signaller to setgid
+	MOVD	$·Baton(SB), R0
+	MOVD	$1, R1
+storeloop:
+	LDAXRW	(R0), R2
+	STLXRW	R1, (R0), R3
+	CBNZ	R3, storeloop
+
+	// Wait for setgid completion
+	MOVW	$0, R1
+	MOVW	$0, R2
+loop:
+	LDAXRW	(R0), R3
+	CMPW	R1, R3
+	BNE	loop
+	STLXRW	R2, (R0), R3
+	CBNZ	R3, loop
+
+	// Restore stack
+	SUB	$(1024 * 8), RSP
+
+	MOVD	R9, R30
+	RET
diff --git a/misc/cgo/test/testdata/issue9400/asm_mips64x.s b/misc/cgo/test/testdata/issue9400/asm_mips64x.s
new file mode 100644
index 0000000..63dc906
--- /dev/null
+++ b/misc/cgo/test/testdata/issue9400/asm_mips64x.s
@@ -0,0 +1,33 @@
+// Copyright 2016 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.
+
+// +build mips64 mips64le
+// +build !gccgo
+
+#include "textflag.h"
+
+#define SYNC	WORD $0xf
+
+TEXT ·RewindAndSetgid(SB),NOSPLIT|NOFRAME,$0-0
+	// Rewind stack pointer so anything that happens on the stack
+	// will clobber the test pattern created by the caller
+	ADDV	$(1024*8), R29
+
+	// Ask signaller to setgid
+	MOVW	$1, R1
+	SYNC
+	MOVW	R1, ·Baton(SB)
+	SYNC
+
+	// Wait for setgid completion
+loop:
+	SYNC
+	MOVW	·Baton(SB), R1
+	OR	R2, R2, R2	// hint that we're in a spin loop
+	BNE	R1, loop
+	SYNC
+
+	// Restore stack
+	ADDV	$(-1024*8), R29
+	RET
diff --git a/misc/cgo/test/testdata/issue9400/asm_mipsx.s b/misc/cgo/test/testdata/issue9400/asm_mipsx.s
new file mode 100644
index 0000000..7a92735
--- /dev/null
+++ b/misc/cgo/test/testdata/issue9400/asm_mipsx.s
@@ -0,0 +1,31 @@
+// Copyright 2016 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.
+
+// +build mips mipsle
+// +build !gccgo
+
+#include "textflag.h"
+
+TEXT ·RewindAndSetgid(SB),NOSPLIT|NOFRAME,$0-0
+	// Rewind stack pointer so anything that happens on the stack
+	// will clobber the test pattern created by the caller
+	ADDU	$(1024*8), R29
+
+	// Ask signaller to setgid
+	MOVW	$1, R1
+	SYNC
+	MOVW	R1, ·Baton(SB)
+	SYNC
+
+	// Wait for setgid completion
+loop:
+	SYNC
+	MOVW	·Baton(SB), R1
+	OR	R2, R2, R2	// hint that we're in a spin loop
+	BNE	R1, loop
+	SYNC
+
+	// Restore stack
+	ADDU	$(-1024*8), R29
+	RET
diff --git a/misc/cgo/test/testdata/issue9400/asm_ppc64x.s b/misc/cgo/test/testdata/issue9400/asm_ppc64x.s
new file mode 100644
index 0000000..c88ec3b
--- /dev/null
+++ b/misc/cgo/test/testdata/issue9400/asm_ppc64x.s
@@ -0,0 +1,32 @@
+// Copyright 2014 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.
+
+// +build ppc64 ppc64le
+// +build !gccgo
+
+#include "textflag.h"
+
+TEXT ·RewindAndSetgid(SB),NOSPLIT|NOFRAME,$0-0
+	// Rewind stack pointer so anything that happens on the stack
+	// will clobber the test pattern created by the caller
+	ADD	$(1024 * 8), R1
+
+	// Ask signaller to setgid
+	MOVW	$1, R3
+	SYNC
+	MOVW	R3, ·Baton(SB)
+
+	// Wait for setgid completion
+loop:
+	SYNC
+	MOVW	·Baton(SB), R3
+	CMP	R3, $0
+	// Hint that we're in a spin loop
+	OR	R1, R1, R1
+	BNE	loop
+	ISYNC
+
+	// Restore stack
+	SUB	$(1024 * 8), R1
+	RET
diff --git a/misc/cgo/test/testdata/issue9400/asm_riscv64.s b/misc/cgo/test/testdata/issue9400/asm_riscv64.s
new file mode 100644
index 0000000..20fcc00
--- /dev/null
+++ b/misc/cgo/test/testdata/issue9400/asm_riscv64.s
@@ -0,0 +1,31 @@
+// Copyright 2020 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.
+
+// +build riscv64
+// +build !gccgo
+
+#include "textflag.h"
+
+TEXT ·RewindAndSetgid(SB),NOSPLIT|NOFRAME,$0-0
+	// Rewind stack pointer so anything that happens on the stack
+	// will clobber the test pattern created by the caller
+	ADD	$(1024*8), X2
+
+	// Ask signaller to setgid
+	MOV	$1, X5
+	FENCE
+	MOVW	X5, ·Baton(SB)
+	FENCE
+
+	// Wait for setgid completion
+loop:
+	FENCE
+	MOVW	·Baton(SB), X5
+	OR	X6, X6, X6	// hint that we're in a spin loop
+	BNE	ZERO, X5, loop
+	FENCE
+
+	// Restore stack
+	ADD	$(-1024*8), X2
+	RET
diff --git a/misc/cgo/test/testdata/issue9400/asm_s390x.s b/misc/cgo/test/testdata/issue9400/asm_s390x.s
new file mode 100644
index 0000000..fc9ad72
--- /dev/null
+++ b/misc/cgo/test/testdata/issue9400/asm_s390x.s
@@ -0,0 +1,26 @@
+// Copyright 2016 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.
+
+// +build !gccgo
+
+#include "textflag.h"
+
+TEXT ·RewindAndSetgid(SB),NOSPLIT,$0-0
+	// Rewind stack pointer so anything that happens on the stack
+	// will clobber the test pattern created by the caller
+	ADD	$(1024 * 8), R15
+
+	// Ask signaller to setgid
+	MOVD	$·Baton(SB), R5
+	MOVW	$1, 0(R5)
+
+	// Wait for setgid completion
+loop:
+	SYNC
+	MOVW	·Baton(SB), R3
+	CMPBNE	R3, $0, loop
+
+	// Restore stack
+	SUB	$(1024 * 8), R15
+	RET
diff --git a/misc/cgo/test/testdata/issue9400/gccgo.go b/misc/cgo/test/testdata/issue9400/gccgo.go
new file mode 100644
index 0000000..a9b62b0
--- /dev/null
+++ b/misc/cgo/test/testdata/issue9400/gccgo.go
@@ -0,0 +1,26 @@
+// Copyright 2014 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.
+
+// +build gccgo
+
+package issue9400
+
+import (
+	"runtime"
+	"sync/atomic"
+)
+
+// The test for the gc compiler resets the stack pointer so that the
+// stack gets modified.  We don't have a way to do that for gccgo
+// without writing more assembly code, which we haven't bothered to
+// do.  So this is not much of a test.
+
+var Baton int32
+
+func RewindAndSetgid() {
+	atomic.StoreInt32(&Baton, 1)
+	for atomic.LoadInt32(&Baton) != 0 {
+		runtime.Gosched()
+	}
+}
diff --git a/misc/cgo/test/testdata/issue9400/stubs.go b/misc/cgo/test/testdata/issue9400/stubs.go
new file mode 100644
index 0000000..e431c5a
--- /dev/null
+++ b/misc/cgo/test/testdata/issue9400/stubs.go
@@ -0,0 +1,11 @@
+// Copyright 2014 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.
+
+// +build gc
+
+package issue9400
+
+var Baton int32
+
+func RewindAndSetgid()
diff --git a/misc/cgo/test/testdata/issue9400_linux.go b/misc/cgo/test/testdata/issue9400_linux.go
new file mode 100644
index 0000000..e94a9bb
--- /dev/null
+++ b/misc/cgo/test/testdata/issue9400_linux.go
@@ -0,0 +1,58 @@
+// Copyright 2014 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.
+
+// Test that SIGSETXID runs on signal stack, since it's likely to
+// overflow if it runs on the Go stack.
+
+package cgotest
+
+/*
+#include <sys/types.h>
+#include <unistd.h>
+*/
+import "C"
+
+import (
+	"runtime"
+	"sync/atomic"
+	"testing"
+
+	"cgotest/issue9400"
+)
+
+func test9400(t *testing.T) {
+	// We synchronize through a shared variable, so we need two procs
+	defer runtime.GOMAXPROCS(runtime.GOMAXPROCS(2))
+
+	// Start signaller
+	atomic.StoreInt32(&issue9400.Baton, 0)
+	go func() {
+		// Wait for RewindAndSetgid
+		for atomic.LoadInt32(&issue9400.Baton) == 0 {
+			runtime.Gosched()
+		}
+		// Broadcast SIGSETXID
+		runtime.LockOSThread()
+		C.setgid(0)
+		// Indicate that signalling is done
+		atomic.StoreInt32(&issue9400.Baton, 0)
+	}()
+
+	// Grow the stack and put down a test pattern
+	const pattern = 0x123456789abcdef
+	var big [1024]uint64 // len must match assembly
+	for i := range big {
+		big[i] = pattern
+	}
+
+	// Temporarily rewind the stack and trigger SIGSETXID
+	issue9400.RewindAndSetgid()
+
+	// Check test pattern
+	for i := range big {
+		if big[i] != pattern {
+			t.Fatalf("entry %d of test pattern is wrong; %#x != %#x", i, big[i], uint64(pattern))
+		}
+	}
+}
diff --git a/misc/cgo/test/testdata/issue9510.go b/misc/cgo/test/testdata/issue9510.go
new file mode 100644
index 0000000..2c79fab
--- /dev/null
+++ b/misc/cgo/test/testdata/issue9510.go
@@ -0,0 +1,24 @@
+// Copyright 2015 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.
+
+// Test that we can link together two different cgo packages that both
+// use the same libgcc function.
+
+package cgotest
+
+import (
+	"runtime"
+	"testing"
+
+	"cgotest/issue9510a"
+	"cgotest/issue9510b"
+)
+
+func test9510(t *testing.T) {
+	if runtime.GOARCH == "arm" {
+		t.Skip("skipping because libgcc may be a Thumb library")
+	}
+	issue9510a.F(1, 1)
+	issue9510b.F(1, 1)
+}
diff --git a/misc/cgo/test/testdata/issue9510a/a.go b/misc/cgo/test/testdata/issue9510a/a.go
new file mode 100644
index 0000000..1a5224b
--- /dev/null
+++ b/misc/cgo/test/testdata/issue9510a/a.go
@@ -0,0 +1,15 @@
+package issue9510a
+
+/*
+static double csquare(double a, double b) {
+	__complex__ double d;
+	__real__ d = a;
+	__imag__ d = b;
+	return __real__ (d * d);
+}
+*/
+import "C"
+
+func F(a, b float64) float64 {
+	return float64(C.csquare(C.double(a), C.double(b)))
+}
diff --git a/misc/cgo/test/testdata/issue9510b/b.go b/misc/cgo/test/testdata/issue9510b/b.go
new file mode 100644
index 0000000..5016b39
--- /dev/null
+++ b/misc/cgo/test/testdata/issue9510b/b.go
@@ -0,0 +1,15 @@
+package issue9510b
+
+/*
+static double csquare(double a, double b) {
+	__complex__ double d;
+	__real__ d = a;
+	__imag__ d = b;
+	return __real__ (d * d);
+}
+*/
+import "C"
+
+func F(a, b float64) float64 {
+	return float64(C.csquare(C.double(a), C.double(b)))
+}
diff --git a/misc/cgo/test/testdata/test26213.go b/misc/cgo/test/testdata/test26213.go
new file mode 100644
index 0000000..c80032c
--- /dev/null
+++ b/misc/cgo/test/testdata/test26213.go
@@ -0,0 +1,15 @@
+// Copyright 2018 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.
+
+package cgotest
+
+import (
+	"testing"
+
+	"cgotest/issue26213"
+)
+
+func test26213(t *testing.T) {
+	issue26213.Test26213(t)
+}