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test: add regress test for reported non-monomorphizable example

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Fixes #48711.

Change-Id: I2ed1ef5267343d4b9f91da0618905098d178db90
Reviewed-on: https://go-review.googlesource.com/c/go/+/362394
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
This commit is contained in:
Matthew Dempsky 2021-11-08 13:13:30 -08:00
parent cc49178237
commit 955f9f56bf
1 changed files with 18 additions and 0 deletions
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18
test/typeparam/issue48711.go Normal file
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@ -0,0 +1,18 @@
// errorcheck -G=3
// 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 main
func f[T interface{ ~[]P }, P any](t T) { // ERROR "instantiation cycle"
if t == nil {
return
}
f[[]T, T]([]T{t})
}
func main() {
f[[]int](nil)
}