1 files changed, 112 insertions, 0 deletions
diff --git a/test/fixedbugs/issue30116.go b/test/fixedbugs/issue30116.go
new file mode 100644
index 0000000..452a6e3
--- /dev/null
+++ b/test/fixedbugs/issue30116.go
@@ -0,0 +1,112 @@
+// 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.
+
+// This test makes sure the text output for bounds check failures is as expected.
+
+package main
+
+import (
+	"fmt"
+	"os"
+	"runtime"
+	"text/tabwriter"
+)
+
+// Testing with length 3 slices, arrays, and strings.
+// Large (>1<<32) values are included to test 32-bit platforms.
+var indexes = []int64{-9876543210, -1, 0, 2, 3, 9876543210}
+var slices = []int64{-9876543210, -1, 0, 3, 4, 9876543210}
+
+var w *tabwriter.Writer
+
+func main() {
+	w = tabwriter.NewWriter(os.Stdout, 0, 0, 1, ' ', tabwriter.AlignRight)
+	defer w.Flush()
+	doIndex()
+	doSlice()
+	doSlice3()
+}
+func doIndex() {
+	a := []int{1, 2, 3}
+	for _, i := range indexes {
+		printPanic(fmt.Sprintf("slice[%d]", i), func() {
+			_ = a[i]
+		})
+	}
+	b := [3]int{1, 2, 3}
+	for _, i := range indexes {
+		printPanic(fmt.Sprintf("array[%d]", i), func() {
+			_ = b[i]
+		})
+	}
+	c := "123"
+	for _, i := range indexes {
+		printPanic(fmt.Sprintf("string[%d]", i), func() {
+			_ = c[i]
+		})
+	}
+}
+
+func doSlice() {
+	a := []int{1, 2, 3}
+	for _, i := range slices {
+		for _, j := range slices {
+			printPanic(fmt.Sprintf("slice[%d:%d]", i, j), func() {
+				_ = a[i:j]
+			})
+		}
+	}
+	b := [3]int{1, 2, 3}
+	for _, i := range slices {
+		for _, j := range slices {
+			printPanic(fmt.Sprintf("array[%d:%d]", i, j), func() {
+				_ = b[i:j]
+			})
+		}
+	}
+	c := "123"
+	for _, i := range slices {
+		for _, j := range slices {
+			printPanic(fmt.Sprintf("string[%d:%d]", i, j), func() {
+				_ = c[i:j]
+			})
+		}
+	}
+}
+
+func doSlice3() {
+	a := []int{1, 2, 3}
+	for _, i := range slices {
+		for _, j := range slices {
+			for _, k := range slices {
+				printPanic(fmt.Sprintf("slice[%d:%d:%d]", i, j, k), func() {
+					_ = a[i:j:k]
+				})
+			}
+		}
+	}
+	b := [3]int{1, 2, 3}
+	for _, i := range slices {
+		for _, j := range slices {
+			for _, k := range slices {
+				printPanic(fmt.Sprintf("array[%d:%d:%d]", i, j, k), func() {
+					_ = b[i:j:k]
+				})
+			}
+		}
+	}
+}
+
+func printPanic(msg string, f func()) {
+	defer func() {
+		res := "no panic"
+		if e := recover(); e != nil {
+			res = e.(runtime.Error).Error()
+		}
+		fmt.Fprintf(w, "%s\t %s\n", msg, res)
+	}()
+	f()
+}