Initial commit: Go 1.23 release state

test/fixedbugs/bug249.go

@@ -0,0 +1,39 @@
+// errorcheck
+
+// Copyright 2009 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
+
+var c1 chan <- chan int = (chan<- (chan int))(nil)
+var c2 chan <- chan int = (chan (<-chan int))(nil)  // ERROR "chan|incompatible"
+var c3 <- chan chan int = (<-chan (chan int))(nil)
+var c4 chan chan <- int = (chan (chan<- int))(nil)
+
+var c5 <- chan <- chan int = (<-chan (<-chan int))(nil)
+var c6 chan <- <- chan int = (chan<- (<-chan int))(nil)
+var c7 chan <- chan <- int = (chan<- (chan<- int))(nil)
+
+var c8 <- chan <- chan chan int = (<-chan (<-chan (chan int)))(nil)
+var c9 <- chan chan <- chan int = (<-chan (chan<- (chan int)))(nil)
+var c10 chan <- <- chan chan int = (chan<- (<-chan (chan int)))(nil)
+var c11 chan <- chan <- chan int = (chan<- (chan<- (chan int)))(nil)
+var c12 chan chan <- <- chan int = (chan (chan<- (<-chan int)))(nil)
+var c13 chan chan <- chan <- int = (chan (chan<- (chan<- int)))(nil)
+
+var r1 chan<- (chan int) = (chan <- chan int)(nil)
+var r2 chan (<-chan int) = (chan <- chan int)(nil)  // ERROR "chan|incompatible"
+var r3 <-chan (chan int) = (<- chan chan int)(nil)
+var r4 chan (chan<- int) = (chan chan <- int)(nil)
+
+var r5 <-chan (<-chan int) = (<- chan <- chan int)(nil)
+var r6 chan<- (<-chan int) = (chan <- <- chan int)(nil)
+var r7 chan<- (chan<- int) = (chan <- chan <- int)(nil)
+
+var r8 <-chan (<-chan (chan int)) = (<- chan <- chan chan int)(nil)
+var r9 <-chan (chan<- (chan int)) = (<- chan chan <- chan int)(nil)
+var r10 chan<- (<-chan (chan int)) = (chan <- <- chan chan int)(nil)
+var r11 chan<- (chan<- (chan int)) = (chan <- chan <- chan int)(nil)
+var r12 chan (chan<- (<-chan int)) = (chan chan <- <- chan int)(nil)
+var r13 chan (chan<- (chan<- int)) = (chan chan <- chan <- int)(nil)