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go/test/typeparam/typeswitch1.go
Dan Scales c1c303f6f8 test: add extra typeswitch tests that cause duplicate cases
Augmented some of the typeswitch*.go tests so that some instantiations
have duplicate cases, in order to ensure we're testing that.

Spacing changes in the tests are due to gofmt.

Change-Id: I5d3678813505c520c544281d4ac8a62ce7e236ad
Reviewed-on: https://go-review.googlesource.com/c/go/+/370155
Trust: Dan Scales <danscales@google.com>
Run-TryBot: Dan Scales <danscales@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2021-12-08 17:55:13 +00:00

32 lines
615 B
Go

// run -gcflags=-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 any](i interface{}) {
switch i.(type) {
case T:
println("T")
case int:
println("int")
case int32, int16:
println("int32/int16")
case struct{ a, b T }:
println("struct{T,T}")
default:
println("other")
}
}
func main() {
f[float64](float64(6))
f[float64](int(7))
f[float64](int32(8))
f[float64](struct{ a, b float64 }{a: 1, b: 2})
f[float64](int8(9))
f[int32](int32(7))
f[int](int32(7))
}