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cmd/compile: fix transform of OEQ/ONE when one arg is a type param
At this point in stenciling, we have shape types, not raw type parameters. The code was correct in the other part of this function. Update #51522 Change-Id: Ife495160a2be5f6af5400363c3efb68dda518b5f Reviewed-on: https://go-review.googlesource.com/c/go/+/391475 Trust: Keith Randall <khr@golang.org> Run-TryBot: Keith Randall <khr@golang.org> Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
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@ -242,7 +242,7 @@ func transformCompare(n *ir.BinaryExpr) {
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aop, _ := typecheck.Assignop(rt, lt)
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aop, _ := typecheck.Assignop(rt, lt)
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if aop != ir.OXXX {
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if aop != ir.OXXX {
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types.CalcSize(rt)
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types.CalcSize(rt)
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if rt.HasTParam() || rt.IsInterface() == lt.IsInterface() || rt.Size() >= 1<<16 {
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if rt.HasShape() || rt.IsInterface() == lt.IsInterface() || rt.Size() >= 1<<16 {
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r = ir.NewConvExpr(base.Pos, aop, lt, r)
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r = ir.NewConvExpr(base.Pos, aop, lt, r)
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r.SetTypecheck(1)
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r.SetTypecheck(1)
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}
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}
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42
test/typeparam/issue51522a.go
Normal file
42
test/typeparam/issue51522a.go
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@ -0,0 +1,42 @@
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// run
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// Copyright 2022 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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func f[T comparable](i any) {
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var t T
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if i != t {
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println("FAIL: if i != t")
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}
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}
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type myint int
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func (m myint) foo() {
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}
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type fooer interface {
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foo()
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}
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type comparableFoo interface {
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comparable
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foo()
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}
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func g[T comparableFoo](i fooer) {
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var t T
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if i != t {
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println("FAIL: if i != t")
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}
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}
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func main() {
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f[int](int(0))
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g[myint](myint(0))
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}
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