Initial commit: Go 1.23 release state

test/fixedbugs/bug273.go

@@ -0,0 +1,79 @@
+// run
+
+// Copyright 2010 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.
+
+// https://golang.org/issue/589
+
+package main
+
+import "unsafe"
+
+var bug = false
+
+var minus1 = -1
+var five = 5
+var big int64 = 10 | 1<<46
+
+type block [1 << 19]byte
+
+var g1 []block
+
+func shouldfail(f func(), desc string) {
+	defer func() { recover() }()
+	f()
+	if !bug {
+		println("BUG")
+		bug = true
+	}
+	println("didn't crash: ", desc)
+}
+
+func badlen() {
+	g1 = make([]block, minus1)
+}
+
+func biglen() {
+	g1 = make([]block, big)
+}
+
+func badcap() {
+	g1 = make([]block, 10, minus1)
+}
+
+func badcap1() {
+	g1 = make([]block, 10, five)
+}
+
+func bigcap() {
+	g1 = make([]block, 10, big)
+}
+
+type cblock [1<<16 - 1]byte
+
+var g4 chan cblock
+
+func badchancap() {
+	g4 = make(chan cblock, minus1)
+}
+
+func bigchancap() {
+	g4 = make(chan cblock, big)
+}
+
+func overflowchan() {
+	const ptrSize = unsafe.Sizeof(uintptr(0))
+	g4 = make(chan cblock, 1<<(30*(ptrSize/4)))
+}
+
+func main() {
+	shouldfail(badlen, "badlen")
+	shouldfail(biglen, "biglen")
+	shouldfail(badcap, "badcap")
+	shouldfail(badcap1, "badcap1")
+	shouldfail(bigcap, "bigcap")
+	shouldfail(badchancap, "badchancap")
+	shouldfail(bigchancap, "bigchancap")
+	shouldfail(overflowchan, "overflowchan")
+}