all: support Go 1.23 for Linux

.github/workflows/test.yml

@@ -7,7 +7,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest]
-        go: ['1.19.13', '1.20.14', '1.21.13', '1.22.6']
+        go: ['1.19.13', '1.20.14', '1.21.13', '1.22.6', '1.23.0']
     name: Test with Go ${{ matrix.go }} on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     defaults:
@@ -45,7 +45,6 @@ jobs:
         GOARCH=arm64 go run test.go -qemu -args="-test.run=^Test -test.v math/rand"
         GOARCH=arm64 go run test.go -qemu -args="-test.run=^Test -test.v -test.short runtime"
         GOARCH=arm64 go run test.go -qemu -args="-test.run=^Test -test.v runtime/debug"
-        GOARCH=arm64 go run test.go -qemu -args="-test.run=^Test -test.v runtime/internal/atomic"
         GOARCH=arm64 go run test.go -qemu -args="-test.run=^Test -test.v runtime/internal/math"
         GOARCH=arm64 go run test.go -qemu -args="-test.run=^Test -test.v runtime/internal/sys"
         GOARCH=arm64 go run test.go -qemu -args="-test.run=^Test -test.v strconv"
@@ -55,8 +54,18 @@ jobs:
         GOARCH=arm64 go run test.go -qemu -args="-test.run=^Test -test.v sync/atomic"
         GOARCH=arm64 go run test.go -qemu -args="-test.run=^Test -test.v time"
 
+    - name: Test (Linux, arm64, Go <=1.22)
+      if: runner.os == 'Linux' && (startsWith(matrix.go, '1.19.') || startsWith(matrix.go, '1.20.') || startsWith(matrix.go, '1.21.') || startsWith(matrix.go, '1.22.'))
+      run: |
+        GOARCH=arm64 go run test.go -qemu -args="-test.run=^Test -test.v runtime/internal/atomic"
+
+    - name: Test (Linux, arm64, Go >=1.23)
+      if: runner.os == 'Linux' && startsWith(matrix.go, '1.23.')
+      run: |
+        GOARCH=arm64 go run test.go -qemu -args="-test.run=^Test -test.v internal/runtime/atomic"
+
     - name: Test (amd64)
-      if: ${{ runner.os == 'Linux' || (runner.os == 'Windows' && !startsWith(matrix.go, '1.22.')) }}
+      if: runner.os == 'Linux' || (runner.os == 'Windows' && !startsWith(matrix.go, '1.22.') && !startsWith(matrix.go, '1.23.'))
       run: |
         go run test.go -args="-test.run=^Test -test.v fmt"
         go run test.go -args="-test.run=^Test -test.v internal/abi"
@@ -73,7 +82,6 @@ jobs:
         # Set an environment to do the default tests.
         GO_RAND_TEST_HELPER_CODE=1 go run test.go -args="-test.run=^Test -test.v math/rand"
         go run test.go -args="-test.run=^Test -test.v runtime/debug"
-        go run test.go -args="-test.run=^Test -test.v runtime/internal/atomic"
         go run test.go -args="-test.run=^Test -test.v runtime/internal/math"
         go run test.go -args="-test.run=^Test -test.v runtime/internal/sys"
         go run test.go -args="-test.run=^Test -test.v strconv"
@@ -83,9 +91,19 @@ jobs:
         go run test.go -args="-test.run=^Test -test.v sync/atomic"
         go run test.go -args="-test.run=^Test -test.v time"
 
+    - name: Test (amd64, Go <=1.22)
+      if: (runner.os == 'Linux' || (runner.os == 'Windows' && !startsWith(matrix.go, '1.22.'))) && (startsWith(matrix.go, '1.19.') || startsWith(matrix.go, '1.20.') || startsWith(matrix.go, '1.21.') || startsWith(matrix.go, '1.22.'))
+      run: |
+        go run test.go -args="-test.run=^Test -test.v runtime/internal/atomic"
+
+    - name: Test (amd64, Go >=1.23)
+      if: (runner.os == 'Linux' || (runner.os == 'Windows' && !startsWith(matrix.go, '1.23.'))) && startsWith(matrix.go, '1.23.')
+      run: |
+        go run test.go -args="-test.run=^Test -test.v internal/runtime/atomic"
+
     - name: Test (amd64, runtime)
       # Skip runtime tests with Go 1.19 and Windows, as there is an issue (probably golang/go#51007 and golang/go#57455).
-      # For Go 1.22, Windows is not supported yet.
-      if: ${{ runner.os != 'Windows' || (!startsWith(matrix.go, '1.19.') && !startsWith(matrix.go, '1.22.')) }}
+      # For Go 1.22 and Go 1.23, Windows is not supported yet.
+      if: runner.os != 'Windows' || (!startsWith(matrix.go, '1.19.') && !startsWith(matrix.go, '1.22.') && !startsWith(matrix.go, '1.23.'))
       run: |
         go run test.go -args="-test.run=^Test -test.v -test.short runtime"

1.23_linux/internal/reflectlite/reflect_mirror_test.go.patch

@@ -0,0 +1,5 @@
+//--from
+func TestMirrorWithReflect(t *testing.T) {
+//--to
+func TestMirrorWithReflect(t *testing.T) {
+       t.Skip("file is not supported in this environment")

1.23_linux/internal/runtime/syscall/asm_linux_amd64.s.patch

@@ -0,0 +1,23 @@
+//--from
+TEXT ·Syscall6<ABIInternal>(SB),NOSPLIT,$0
+	// a6 already in R9.
+	// a5 already in R8.
+	MOVQ	SI, R10 // a4
+	MOVQ	DI, DX  // a3
+	MOVQ	CX, SI  // a2
+	MOVQ	BX, DI  // a1
+	// num already in AX.
+	SYSCALL
+	CMPQ	AX, $0xfffffffffffff001
+	JLS	ok
+	NEGQ	AX
+	MOVQ	AX, CX  // errno
+	MOVQ	$-1, AX // r1
+	MOVQ	$0, BX  // r2
+	RET
+ok:
+	// r1 already in AX.
+	MOVQ	DX, BX // r2
+	MOVQ	$0, CX // errno
+	RET
+//--to

1.23_linux/internal/runtime/syscall/asm_linux_arm64.s.patch

@@ -0,0 +1,24 @@
+//--from
+TEXT ·Syscall6(SB),NOSPLIT,$0-80
+	MOVD	num+0(FP), R8	// syscall entry
+	MOVD	a1+8(FP), R0
+	MOVD	a2+16(FP), R1
+	MOVD	a3+24(FP), R2
+	MOVD	a4+32(FP), R3
+	MOVD	a5+40(FP), R4
+	MOVD	a6+48(FP), R5
+	SVC
+	CMN	$4095, R0
+	BCC	ok
+	MOVD	$-1, R4
+	MOVD	R4, r1+56(FP)
+	MOVD	ZR, r2+64(FP)
+	NEG	R0, R0
+	MOVD	R0, errno+72(FP)
+	RET
+ok:
+	MOVD	R0, r1+56(FP)
+	MOVD	R1, r2+64(FP)
+	MOVD	ZR, errno+72(FP)
+	RET
+//--to

1.23_linux/internal/runtime/syscall/syscall_linux.go.patch

@@ -0,0 +1,8 @@
+//--from
+func Syscall6(num, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, errno uintptr)
+//--to
+func Syscall6(num, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, errno uintptr) {
+	println("not implemented syscall at Syscall6", num)
+	panic("syscall.Syscall6")
+	return 0, 0, 0x26 // ENOSYS
+}

1.23_linux/internal/runtime/syscall/syscall_linux_test.go.patch

@@ -0,0 +1,22 @@
+//--from
+import (
+	"internal/runtime/syscall"
+	"testing"
+)
+//--to
+import (
+	"testing"
+)
+//--from
+func TestEpollctlErrorSign(t *testing.T) {
+	v := syscall.EpollCtl(-1, 1, -1, &syscall.EpollEvent{})
+
+	const EBADF = 0x09
+	if v != EBADF {
+		t.Errorf("epollctl = %v, want %v", v, EBADF)
+	}
+}
+//--to
+func TestEpollctlErrorSign(t *testing.T) {
+	t.Skip("Epollctl is not supported in this environment")
+}

1.23_linux/internal/syscall/unix/fcntl_unix.go.patch

@@ -0,0 +1,12 @@
+//--from
+func Fcntl(fd int, cmd int, arg int) (int, error) {
+	val, errno := fcntl(int32(fd), int32(cmd), int32(arg))
+	if val == -1 {
+		return int(val), syscall.Errno(errno)
+	}
+	return int(val), nil
+}
+//--to
+func Fcntl(fd int, cmd int, arg int) (int, error) {
+	return 0, syscall.ENOSYS
+}

1.23_linux/internal/testenv/exec.go.patch

@@ -0,0 +1,5 @@
+//--from
+func tryExec() error {
+//--to
+func tryExec() error {
+	return fmt.Errorf("can't probe for exec support")

1.23_linux/internal/testenv/testenv.go.patch

@@ -0,0 +1,5 @@
+//--from
+func HasGoBuild() bool {
+//--to
+func HasGoBuild() bool {
+	return false

1.23_linux/internal/testenv/testenv_notunix.go.patch

@@ -0,0 +1,4 @@
+//--from
+//go:build windows || plan9 || (js && wasm) || wasip1
+//--to
+//go:build windows || plan9 || (js && wasm) || wasip1 || linux

1.23_linux/internal/testenv/testenv_unix.go.patch

@@ -0,0 +1,4 @@
+//--from
+//go:build unix
+//--to
+//go:build unix && !linux

1.23_linux/math/big/link_test.go.patch

@@ -0,0 +1,5 @@
+//--from
+func TestLinkerGC(t *testing.T) {
+//--to
+func TestLinkerGC(t *testing.T) {
+	t.Skip("go tools are not supported in this environment")

1.23_linux/math/rand/default_test.go.patch

@@ -0,0 +1,5 @@
+//--from
+func TestDefaultRace(t *testing.T) {
+//--to
+func TestDefaultRace(t *testing.T) {
+	t.Skip("os.Getenv and creating processes are not supported in this environment")

1.23_linux/runtime/align_test.go.patch

@@ -0,0 +1,5 @@
+//--from
+func TestAtomicAlignment(t *testing.T) {
+//--to
+func TestAtomicAlignment(t *testing.T) {
+	t.Skip("file is not supported in this environment")

1.23_linux/runtime/callers_test.go.patch

@@ -0,0 +1,15 @@
+//--from
+func TestCallersNilPointerPanic(t *testing.T) {
+//--to
+func TestCallersNilPointerPanic(t *testing.T) {
+	t.Skip("handling nil pointer access is not supported in this environment")
+//--from
+func TestCallersDeferNilFuncPanic(t *testing.T) {
+//--to
+func TestCallersDeferNilFuncPanic(t *testing.T) {
+	t.Skip("handling nil pointer access is not supported in this environment")
+//--from
+func TestCallersDeferNilFuncPanicWithLoop(t *testing.T) {
+//--to
+func TestCallersDeferNilFuncPanicWithLoop(t *testing.T) {
+	t.Skip("handling nil pointer access is not supported in this environment")

1.23_linux/runtime/cgo/cgo.go.patch

@@ -0,0 +1,8 @@
+//--from
+*/
+import "C"
+//--to
+#cgo !darwin LDFLAGS: -Wl,-unresolved-symbols=ignore-all
+#cgo darwin LDFLAGS: -Wl,-undefined,dynamic_lookup
+*/
+import "C"

1.23_linux/runtime/cgo/gcc_linux_amd64.c.patch

@@ -0,0 +1,69 @@
+//--from
+#include <pthread.h>
+#include <errno.h>
+#include <string.h> // strerror
+#include <signal.h>
+#include <stdlib.h>
+#include "libcgo.h"
+#include "libcgo_unix.h"
+//--to
+#include <pthread.h>
+#include <errno.h>
+#include <string.h> // strerror
+#include <stdlib.h>
+#include "libcgo.h"
+#include "libcgo_unix.h"
+//--from
+void
+_cgo_sys_thread_start(ThreadStart *ts)
+{
+	pthread_attr_t attr;
+	sigset_t ign, oset;
+	pthread_t p;
+	size_t size;
+	int err;
+
+	sigfillset(&ign);
+	pthread_sigmask(SIG_SETMASK, &ign, &oset);
+
+	pthread_attr_init(&attr);
+	pthread_attr_getstacksize(&attr, &size);
+	// Leave stacklo=0 and set stackhi=size; mstart will do the rest.
+	ts->g->stackhi = size;
+	err = _cgo_try_pthread_create(&p, &attr, threadentry, ts);
+
+	pthread_sigmask(SIG_SETMASK, &oset, nil);
+
+	if (err != 0) {
+		fatalf("pthread_create failed: %s", strerror(err));
+	}
+}
+//--to
+void
+_cgo_sys_thread_start(ThreadStart *ts)
+{
+	pthread_attr_t attr;
+	pthread_t p;
+	size_t size;
+	int err;
+
+	pthread_attr_init(&attr);
+	pthread_attr_getstacksize(&attr, &size);
+	// Leave stacklo=0 and set stackhi=size; mstart will do the rest.
+	ts->g->stackhi = size;
+	err = _cgo_try_pthread_create(&p, &attr, threadentry, ts);
+
+	if (err != 0) {
+		fatalf("pthread_create failed: %s", strerror(err));
+	}
+}
+//--from
+static void*
+threadentry(void *v)
+{
+//--to
+static void*
+threadentry(void *v)
+{
+	extern void hitsumabushi_initializeThread(void);
+	hitsumabushi_initializeThread();

1.23_linux/runtime/cgo/gcc_linux_arm64.c.patch

@@ -0,0 +1,62 @@
+//--from
+void
+_cgo_sys_thread_start(ThreadStart *ts)
+{
+	pthread_attr_t attr;
+	sigset_t ign, oset;
+	pthread_t p;
+	size_t size;
+	int err;
+
+	sigfillset(&ign);
+	pthread_sigmask(SIG_SETMASK, &ign, &oset);
+
+	pthread_attr_init(&attr);
+	pthread_attr_getstacksize(&attr, &size);
+	// Leave stacklo=0 and set stackhi=size; mstart will do the rest.
+	ts->g->stackhi = size;
+	err = _cgo_try_pthread_create(&p, &attr, threadentry, ts);
+
+	pthread_sigmask(SIG_SETMASK, &oset, nil);
+
+	if (err != 0) {
+		fatalf("pthread_create failed: %s", strerror(err));
+	}
+}
+//--to
+void
+_cgo_sys_thread_start(ThreadStart *ts)
+{
+	pthread_attr_t attr;
+	sigset_t ign, oset;
+	pthread_t p;
+	size_t size;
+	int err;
+
+	sigfillset(&ign);
+	pthread_sigmask(SIG_SETMASK, &ign, &oset);
+
+	pthread_attr_init(&attr);
+	pthread_attr_setstacksize(&attr, 16 * 4096); // Hack for some special environments
+	pthread_attr_getstacksize(&attr, &size);
+	// Leave stacklo=0 and set stackhi=size; mstart will do the rest.
+	ts->g->stackhi = size;
+	err = _cgo_try_pthread_create(&p, &attr, threadentry, ts);
+
+	pthread_sigmask(SIG_SETMASK, &oset, nil);
+
+	if (err != 0) {
+		fatalf("pthread_create failed: %s", strerror(err));
+	}
+}
+//--from
+static void*
+threadentry(void *v)
+{
+//--to
+static void*
+threadentry(void *v)
+{
+	// Note that threadentry will also be defined in gcc_linux.go in Go 1.22.
+	extern void hitsumabushi_initializeThread(void);
+	hitsumabushi_initializeThread();

1.23_linux/runtime/cgo/gcc_setenv.c.patch

@@ -0,0 +1,26 @@
+//--from
+void
+x_cgo_setenv(char **arg)
+{
+	_cgo_tsan_acquire();
+	setenv(arg[0], arg[1], 1);
+	_cgo_tsan_release();
+}
+//--to
+void
+x_cgo_setenv(char **arg)
+{
+}
+//--from
+void
+x_cgo_unsetenv(char **arg)
+{
+	_cgo_tsan_acquire();
+	unsetenv(arg[0]);
+	_cgo_tsan_release();
+}
+//--to
+void
+x_cgo_unsetenv(char **arg)
+{
+}

1.23_linux/runtime/cgo/gcc_sigaction.c.patch

@@ -0,0 +1,4 @@
+//--from
+//go:build linux && (amd64 || arm64 || ppc64le)
+//--to
+//go:build linux && (arm64 || ppc64le)