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authorkorzhao <korzhao95@gmail.com>2021-09-25 04:42:57 +0800
committerDan Scales <danscales@google.com>2021-09-27 05:10:56 +0000
commit54079dfd7fff6c61d41c4832c074e8231f235fc3 (patch)
treedf237bca5632c6d0feeaabb4a97bc13ce8c616a8
parentff8a7e513bda9e89dfbde8ecefaa4514c11ec596 (diff)
downloadgo-54079dfd7fff6c61d41c4832c074e8231f235fc3.tar.xz
cmd/compile: fix stencil call expression
In CL 349613,we have supported types.IdentityStrict() that does strict type comparison. Therefore, OCONVNOP becomes a possible case in call.X.Op(). Fixes #48604 Change-Id: Ibab27ffcf09656e3380314662f05f38294c1c6ed Reviewed-on: https://go-review.googlesource.com/c/go/+/351857 Trust: Dan Scales <danscales@google.com> Trust: David Chase <drchase@google.com> Run-TryBot: Dan Scales <danscales@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Dan Scales <danscales@google.com>
-rw-r--r--src/cmd/compile/internal/noder/stencil.go3
-rw-r--r--test/typeparam/issue48604.go25
2 files changed, 28 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/noder/stencil.go b/src/cmd/compile/internal/noder/stencil.go
index d5fb9f338c..bc142e6985 100644
--- a/src/cmd/compile/internal/noder/stencil.go
+++ b/src/cmd/compile/internal/noder/stencil.go
@@ -1093,6 +1093,9 @@ func (subst *subster) node(n ir.Node) ir.Node {
case ir.OCALL, ir.OCALLFUNC, ir.OCALLMETH, ir.OCALLINTER:
transformCall(call)
+ case ir.OCONVNOP:
+ transformCall(call)
+
case ir.OFUNCINST:
// A call with an OFUNCINST will get transformed
// in stencil() once we have created & attached the
diff --git a/test/typeparam/issue48604.go b/test/typeparam/issue48604.go
new file mode 100644
index 0000000000..1babd3f864
--- /dev/null
+++ b/test/typeparam/issue48604.go
@@ -0,0 +1,25 @@
+// build -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
+
+type Foo[T any] interface {
+ CreateBar() Bar[T]
+}
+
+type Bar[T any] func() Bar[T]
+
+func (f Bar[T]) CreateBar() Bar[T] {
+ return f
+}
+
+func abc[R any]() {
+ var _ Foo[R] = Bar[R](nil)()
+}
+
+func main() {
+ abc[int]()
+} \ No newline at end of file