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Diffstat (limited to '')
-rw-r--r-- | test/fixedbugs/issue29190.go | 37 |
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() +} |