go/test/typeparam/issue51250a.dir/main.go
Keith Randall d3672054fb cmd/compile: don't include instantiating types in type hash
This CL is a bit overkill, but it is pretty safe for 1.18. We'll
want to revisit for 1.19 so we can avoid the hash collisions between
types, e.g. G[int] and G[float64], that will cause some slowdowns
(but not incorrect behavior). Thanks Cherry for the simple idea.

Fixes #51250

Change-Id: I68130e09ba68e7cc35687bc623f63547bc552867
Reviewed-on: https://go-review.googlesource.com/c/go/+/389474
Trust: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-03-03 00:23:02 +00:00

25 lines
355 B
Go

// 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
import (
"./a"
"./b"
)
func main() {
switch b.I.(type) {
case a.G[b.T]:
case int:
panic("bad")
case float64:
panic("bad")
default:
panic("bad")
}
b.F(a.G[b.T]{})
}