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-rw-r--r--test/fixedbugs/issue29190.go37
1 files changed, 37 insertions, 0 deletions
diff --git a/test/fixedbugs/issue29190.go b/test/fixedbugs/issue29190.go
new file mode 100644
index 0000000..c0c4bb1
--- /dev/null
+++ b/test/fixedbugs/issue29190.go
@@ -0,0 +1,37 @@
+// run
+
+// Copyright 2018 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 (
+ "strings"
+)
+
+type T struct{}
+
+const maxInt = int(^uint(0) >> 1)
+
+func main() {
+ s := make([]T, maxInt)
+ shouldPanic("cap out of range", func() { s = append(s, T{}) })
+ var oneElem = make([]T, 1)
+ shouldPanic("cap out of range", func() { s = append(s, oneElem...) })
+}
+
+func shouldPanic(str string, f func()) {
+ defer func() {
+ err := recover()
+ if err == nil {
+ panic("did not panic")
+ }
+ s := err.(error).Error()
+ if !strings.Contains(s, str) {
+ panic("got panic " + s + ", want " + str)
+ }
+ }()
+
+ f()
+}