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a1bcee4f1c
Gccgo CL 184998 added optimizations for one- and two-case select statements. But it didn't handle break statement in the select case correctly. The fix is CL 185519. This CL adds a test. Change-Id: Ide1b199f106172b41dd77c1f6e0d662fccdd8cc5 Reviewed-on: https://go-review.googlesource.com/c/go/+/185520 Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
56 lines
826 B
Go
56 lines
826 B
Go
// run
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// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test break statements in a select.
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// Gccgo had a bug in handling this.
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// Test 1,2,3-case selects, so it covers both the general
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// code path and the specialized optimizations for one-
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// and two-case selects.
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package main
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var ch = make(chan int)
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func main() {
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go func() {
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for {
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ch <- 5
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}
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}()
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select {
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case <-ch:
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break
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panic("unreachable")
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}
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select {
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default:
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break
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panic("unreachable")
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}
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select {
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case <-ch:
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break
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panic("unreachable")
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default:
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break
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panic("unreachable")
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}
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select {
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case <-ch:
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break
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panic("unreachable")
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case ch <- 10:
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panic("unreachable")
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default:
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break
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panic("unreachable")
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}
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}
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