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Diffstat (limited to 'test/chan/select8.go')
-rw-r--r-- | test/chan/select8.go | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/test/chan/select8.go b/test/chan/select8.go new file mode 100644 index 0000000..20bca3a --- /dev/null +++ b/test/chan/select8.go @@ -0,0 +1,55 @@ +// 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. + +// Test break statements in a select. +// Gccgo had a bug in handling this. +// Test 1,2,3-case selects, so it covers both the general +// code path and the specialized optimizations for one- +// and two-case selects. + +package main + +var ch = make(chan int) + +func main() { + go func() { + for { + ch <- 5 + } + }() + + select { + case <-ch: + break + panic("unreachable") + } + + select { + default: + break + panic("unreachable") + } + + select { + case <-ch: + break + panic("unreachable") + default: + break + panic("unreachable") + } + + select { + case <-ch: + break + panic("unreachable") + case ch <- 10: + panic("unreachable") + default: + break + panic("unreachable") + } +} |