Initial commit: Go 1.23 release state

test/typeparam/issue58513.go

@@ -0,0 +1,60 @@
+// run
+
+// Copyright 2023 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.
+
+// Some derived-type expressions require the compiler to synthesize
+// function literals to plumb sub-dictionaries appropriately.
+// However, when these expressions are inlined, we were constructing
+// the function literal bodies with the inline-adjusted positions
+// instead of the original (inline-free) positions, which could lead
+// to infinite loops when unwinding the stack.
+
+package main
+
+import "runtime"
+
+func assert[_ any]() {
+	panic(0)
+}
+
+func Assert[To any]() func() {
+	return assert[To]
+}
+
+type asserter[_ any] struct{}
+
+func (asserter[_]) assert() {
+	panic(0)
+}
+
+func AssertMV[To any]() func() {
+	return asserter[To]{}.assert
+}
+
+func AssertME[To any]() func(asserter[To]) {
+	return asserter[To].assert
+}
+
+var me = AssertME[string]()
+
+var tests = []func(){
+	Assert[int](),
+	AssertMV[int](),
+	func() { me(asserter[string]{}) },
+}
+
+func main() {
+	for _, test := range tests {
+		func() {
+			defer func() {
+				recover()
+
+				// Check that we can unwind the stack without infinite looping.
+				runtime.Caller(1000)
+			}()
+			test()
+		}()
+	}
+}