From 109be507377fe7f6e8819ac94041d3fdcdf6fd2f Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 15:18:25 +0200 Subject: Adding upstream version 1.19.8. Signed-off-by: Daniel Baumann --- misc/cgo/test/issue42018_windows.go | 46 +++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 misc/cgo/test/issue42018_windows.go (limited to 'misc/cgo/test/issue42018_windows.go') diff --git a/misc/cgo/test/issue42018_windows.go b/misc/cgo/test/issue42018_windows.go new file mode 100644 index 0000000..8f4570a --- /dev/null +++ b/misc/cgo/test/issue42018_windows.go @@ -0,0 +1,46 @@ +// Copyright 2021 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 void *HANDLE; + +struct HWND__{int unused;}; typedef struct HWND__ *HWND; +*/ +import "C" + +import ( + "testing" + "unsafe" +) + +func test42018(t *testing.T) { + // Test that Windows handles are marked go:notinheap, by growing the + // stack and checking for pointer adjustments. Trick from + // test/fixedbugs/issue40954.go. + var i int + handle := C.HANDLE(unsafe.Pointer(uintptr(unsafe.Pointer(&i)))) + recurseHANDLE(100, handle, uintptr(unsafe.Pointer(&i))) + hwnd := C.HWND(unsafe.Pointer(uintptr(unsafe.Pointer(&i)))) + recurseHWND(400, hwnd, uintptr(unsafe.Pointer(&i))) +} + +func recurseHANDLE(n int, p C.HANDLE, v uintptr) { + if n > 0 { + recurseHANDLE(n-1, p, v) + } + if uintptr(unsafe.Pointer(p)) != v { + panic("adjusted notinheap pointer") + } +} + +func recurseHWND(n int, p C.HWND, v uintptr) { + if n > 0 { + recurseHWND(n-1, p, v) + } + if uintptr(unsafe.Pointer(p)) != v { + panic("adjusted notinheap pointer") + } +} -- cgit v1.2.3