type EmbedURLPtr struct {
	*URL
}

type S2 struct {
	// Deprecated: use T.
	S
	Extra bool
}

var X0 int64

var (
	Y int
	X I
)

type Namer interface {
	Name() string
}

type I interface {
	Namer
	ptwo.Twoer
	Set(name string, balance int64)
	// Deprecated: use GetNamed.
	Get(string) int64
	GetNamed(string) (balance int64)
	private()
}

type Public interface {

		} __attribute__((__packed__, __gcc_struct__)) *a = v;
		a->r = puts((void*)a->p0);
	}

It extracts the arguments from the pointer to _Cfunc_puts's argument
frame, invokes the system C function (in this case, puts), stores the
result in the frame, and returns.

Linking

Once the _cgo_export.c and *.cgo2.c files have been compiled with gcc,
they need to be linked into the final binary, along with the libraries

		"test.TestCallbackCallers",
		"testing.tRunner",
		"runtime.goexit",
	}
	nestedCall(func() {
		n = runtime.Callers(4, pc)
	})
	if n != len(name) {
		t.Errorf("expected %d frames, got %d", len(name), n)
	}
	for i := 0; i < n; i++ {
		f := runtime.FuncForPC(pc[i] - 1) // TODO: use runtime.CallersFrames
		if f == nil {
			t.Fatalf("expected non-nil Func for pc %d", pc[i])
		}

pkg syscall (netbsd-arm64-cgo), const DLT_FC_2 = 224
pkg syscall (netbsd-arm64-cgo), const DLT_FC_2 ideal-int
pkg syscall (netbsd-arm64-cgo), const DLT_FC_2_WITH_FRAME_DELIMS = 225
pkg syscall (netbsd-arm64-cgo), const DLT_FC_2_WITH_FRAME_DELIMS ideal-int
pkg syscall (netbsd-arm64-cgo), const DLT_FDDI = 10
pkg syscall (netbsd-arm64-cgo), const DLT_FDDI ideal-int
pkg syscall (netbsd-arm64-cgo), const DLT_FLEXRAY = 210

pkg p1, type I interface, Name() string
pkg p1, type I interface, PackageTwoMeth()
pkg p1, type I interface, Set(string, int64)
pkg p1, type I interface, unexported methods
pkg p1, type MyInt int
pkg p1, type Namer interface { Name }
pkg p1, type Namer interface, Name() string
pkg p1, type Private interface, X()
pkg p1, type Private interface, unexported methods
pkg p1, type Private //deprecated
pkg p1, type Public interface { X, Y }

pkg debug/elf, const PT_ARM_ARCHEXT ProgType
pkg debug/elf, const PT_ARM_EXIDX = 1879048193
pkg debug/elf, const PT_ARM_EXIDX ProgType
pkg debug/elf, const PT_GNU_EH_FRAME = 1685382480
pkg debug/elf, const PT_GNU_EH_FRAME ProgType
pkg debug/elf, const PT_GNU_MBIND_HI = 1685386580
pkg debug/elf, const PT_GNU_MBIND_HI ProgType
pkg debug/elf, const PT_GNU_MBIND_LO = 1685382485

pkg syscall (freebsd-arm64), const DLT_FC_2 = 224
pkg syscall (freebsd-arm64), const DLT_FC_2 ideal-int
pkg syscall (freebsd-arm64), const DLT_FC_2_WITH_FRAME_DELIMS = 225
pkg syscall (freebsd-arm64), const DLT_FC_2_WITH_FRAME_DELIMS ideal-int
pkg syscall (freebsd-arm64), const DLT_FDDI = 10
pkg syscall (freebsd-arm64), const DLT_FDDI ideal-int
pkg syscall (freebsd-arm64), const DLT_FLEXRAY = 210

		t.Skip("skipping for non-gc toolchain")
	}
	if runtime.GOARCH != "amd64" {
		// TODO: support SEH on other architectures.
		t.Skip("skipping on non-amd64")
	}
	// Only frames in the test package are checked.
	want := []string{
		"test._Cfunc_backtrace",
		"test.testCallbackCallersSEH.func1.1",
		"test.testCallbackCallersSEH.func1",
		"test.goCallback",
		"test._Cfunc_callback",

pkg runtime, func CallersFrames([]uintptr) *Frames
pkg runtime, func KeepAlive(interface{})
pkg runtime, func SetCgoTraceback(int, unsafe.Pointer, unsafe.Pointer, unsafe.Pointer)
pkg runtime, method (*Frames) Next() (Frame, bool)
pkg runtime, type Frame struct
pkg runtime, type Frame struct, Entry uintptr
pkg runtime, type Frame struct, File string
pkg runtime, type Frame struct, Func *Func

pkg syscall (freebsd-386), const DLT_FC_2 = 224
pkg syscall (freebsd-386), const DLT_FC_2 ideal-int
pkg syscall (freebsd-386), const DLT_FC_2_WITH_FRAME_DELIMS = 225
pkg syscall (freebsd-386), const DLT_FC_2_WITH_FRAME_DELIMS ideal-int
pkg syscall (freebsd-386), const DLT_FDDI = 10
pkg syscall (freebsd-386), const DLT_FLEXRAY = 210
pkg syscall (freebsd-386), const DLT_FRELAY = 107