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go/test/typeparam/issue51832.go
David Chase ccf84a9750 cmd/compile: catch pointless recursion on function types
If a function type has no type parameters, note when it
is visited and do not recur.  (It must be visited
at least once because of closures and their associated
types occurring in a generic context).

Fixes #51832.

Change-Id: Iee20612ffd0a03b838b9e59615f4a0206fc8940b
Reviewed-on: https://go-review.googlesource.com/c/go/+/406714
Reviewed-by: Keith Randall <khr@google.com>
2022-05-24 20:35:40 +00:00

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359 B
Go

// compile
// Copyright 2022 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 main
type F func() F
func do[T any]() F {
return nil
}
type G[T any] func() G[T]
//go:noinline
func dog[T any]() G[T] {
return nil
}
func main() {
do[int]()
dog[int]()
}