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-rw-r--r--test/fixedbugs/issue23017.go113
1 files changed, 113 insertions, 0 deletions
diff --git a/test/fixedbugs/issue23017.go b/test/fixedbugs/issue23017.go
new file mode 100644
index 0000000..770c48e
--- /dev/null
+++ b/test/fixedbugs/issue23017.go
@@ -0,0 +1,113 @@
+// run
+
+// Copyright 2020 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.
+
+// assignment order in multiple assignments.
+// See issue #23017
+
+package main
+
+import "fmt"
+
+func main() {}
+
+func init() {
+ var m = map[int]int{}
+ var p *int
+
+ defer func() {
+ recover()
+ check(1, len(m))
+ check(42, m[2])
+ }()
+ m[2], *p = 42, 2
+}
+
+func init() {
+ var m = map[int]int{}
+ p := []int{}
+
+ defer func() {
+ recover()
+ check(1, len(m))
+ check(2, m[2])
+ }()
+ m[2], p[1] = 2, 2
+}
+
+func init() {
+ type P struct{ i int }
+ var m = map[int]int{}
+ var p *P
+
+ defer func() {
+ recover()
+ check(1, len(m))
+ check(3, m[2])
+ }()
+ m[2], p.i = 3, 2
+}
+
+func init() {
+ type T struct{ i int }
+ var x T
+ p := &x
+ p, p.i = new(T), 4
+ check(4, x.i)
+}
+
+func init() {
+ var m map[int]int
+ var a int
+ var p = &a
+
+ defer func() {
+ recover()
+ check(5, *p)
+ }()
+ *p, m[2] = 5, 2
+}
+
+var g int
+
+func init() {
+ var m map[int]int
+ defer func() {
+ recover()
+ check(0, g)
+ }()
+ m[0], g = 1, 2
+}
+
+func init() {
+ type T struct{ x struct{ y int } }
+ var x T
+ p := &x
+ p, p.x.y = new(T), 7
+ check(7, x.x.y)
+ check(0, p.x.y)
+}
+
+func init() {
+ type T *struct{ x struct{ y int } }
+ x := struct{ y int }{0}
+ var q T = &struct{ x struct{ y int } }{x}
+ p := q
+ p, p.x.y = nil, 7
+ check(7, q.x.y)
+}
+
+func init() {
+ x, y := 1, 2
+ x, y = y, x
+ check(2, x)
+ check(1, y)
+}
+
+func check(want, got int) {
+ if want != got {
+ panic(fmt.Sprintf("wanted %d, but got %d", want, got))
+ }
+}