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-rw-r--r--test/fixedbugs/issue19113.go108
1 files changed, 108 insertions, 0 deletions
diff --git a/test/fixedbugs/issue19113.go b/test/fixedbugs/issue19113.go
new file mode 100644
index 0000000..5e01dde
--- /dev/null
+++ b/test/fixedbugs/issue19113.go
@@ -0,0 +1,108 @@
+// run
+
+// Copyright 2019 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
+
+import "reflect"
+
+var tests = []interface{}{
+ func(x int, s int) int {
+ return x << s
+ },
+ func(x int, s int64) int {
+ return x << s
+ },
+ func(x int, s int32) int {
+ return x << s
+ },
+ func(x int, s int16) int {
+ return x << s
+ },
+ func(x int, s int8) int {
+ return x << s
+ },
+ func(x int, s int) int {
+ return x >> s
+ },
+ func(x int, s int64) int {
+ return x >> s
+ },
+ func(x int, s int32) int {
+ return x >> s
+ },
+ func(x int, s int16) int {
+ return x >> s
+ },
+ func(x int, s int8) int {
+ return x >> s
+ },
+ func(x uint, s int) uint {
+ return x << s
+ },
+ func(x uint, s int64) uint {
+ return x << s
+ },
+ func(x uint, s int32) uint {
+ return x << s
+ },
+ func(x uint, s int16) uint {
+ return x << s
+ },
+ func(x uint, s int8) uint {
+ return x << s
+ },
+ func(x uint, s int) uint {
+ return x >> s
+ },
+ func(x uint, s int64) uint {
+ return x >> s
+ },
+ func(x uint, s int32) uint {
+ return x >> s
+ },
+ func(x uint, s int16) uint {
+ return x >> s
+ },
+ func(x uint, s int8) uint {
+ return x >> s
+ },
+}
+
+func main() {
+ for _, t := range tests {
+ runTest(reflect.ValueOf(t))
+ }
+}
+
+func runTest(f reflect.Value) {
+ xt := f.Type().In(0)
+ st := f.Type().In(1)
+
+ for _, x := range []int{1, 0, -1} {
+ for _, s := range []int{-99, -64, -63, -32, -31, -16, -15, -8, -7, -1, 0, 1, 7, 8, 15, 16, 31, 32, 63, 64, 99} {
+ args := []reflect.Value{
+ reflect.ValueOf(x).Convert(xt),
+ reflect.ValueOf(s).Convert(st),
+ }
+ if s < 0 {
+ shouldPanic(func() {
+ f.Call(args)
+ })
+ } else {
+ f.Call(args) // should not panic
+ }
+ }
+ }
+}
+
+func shouldPanic(f func()) {
+ defer func() {
+ if recover() == nil {
+ panic("did not panic")
+ }
+ }()
+ f()
+}