go/types, types2: a min/max value argument must not be untyped

Fixes #61486.

Change-Id: I5770e238e44b724816894d914b3ea5dc78bc3ced
Reviewed-on: https://go-review.googlesource.com/c/go/+/511835
Reviewed-by: Robert Griesemer <[email protected]>
Auto-Submit: Robert Griesemer <[email protected]>
Run-TryBot: Robert Griesemer <[email protected]>
Reviewed-by: Matthew Dempsky <[email protected]>
TryBot-Result: Gopher Robot <[email protected]>

Author: griesemer

src/cmd/compile/internal/types2/builtins.go

@@ -576,6 +576,11 @@ func (check *Checker) builtin(x *operand, call *syntax.CallExpr, id builtinId) (
 		// If nargs == 1, make sure x.mode is either a value or a constant.
 		if x.mode != constant_ {
 			x.mode = value
+			// A value must not be untyped.
+			check.assignment(x, &emptyInterface, "argument to "+bin.name)
+			if x.mode == invalid {
+				return
+			}
 		}
 
 		// Use the final type computed above for all arguments.

src/go/types/builtins.go

@@ -575,6 +575,11 @@ func (check *Checker) builtin(x *operand, call *ast.CallExpr, id builtinId) (_ b
 		// If nargs == 1, make sure x.mode is either a value or a constant.
 		if x.mode != constant_ {
 			x.mode = value
+			// A value must not be untyped.
+			check.assignment(x, &emptyInterface, "argument to "+bin.name)
+			if x.mode == invalid {
+				return
+			}
 		}
 
 		// Use the final type computed above for all arguments.

src/internal/types/testdata/fixedbugs/issue61486.go

@@ -0,0 +1,9 @@
+// Copyright 2023 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 p
+
+func _(s uint) {
+	_ = min(1 << s)
+}