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1737aef270
This change adds line position tests for several yyerror calls in the typechecker that are currently not tested in any way. Untested yyerror calls were found by replacing them with yerrorl(src.NoXPos, ...) (thus destroying position information in the error), and then running the test suite. No failures means no test coverage for the relevant yyerror call. For #19683 Change-Id: Iedb3d2f02141b332e9bfa76dbf5ae930ad2fddc3 Reviewed-on: https://go-review.googlesource.com/41477 Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
71 lines
1.3 KiB
Go
71 lines
1.3 KiB
Go
// errorcheck
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// Copyright 2009 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 various correct and incorrect permutations of send-only,
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// receive-only, and bidirectional channels.
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// Does not compile.
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package main
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var (
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cr <-chan int
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cs chan<- int
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c chan int
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)
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func main() {
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cr = c // ok
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cs = c // ok
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c = cr // ERROR "illegal types|incompatible|cannot"
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c = cs // ERROR "illegal types|incompatible|cannot"
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cr = cs // ERROR "illegal types|incompatible|cannot"
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cs = cr // ERROR "illegal types|incompatible|cannot"
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var n int
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<-n // ERROR "receive from non-chan"
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n <- 2 // ERROR "send to non-chan"
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c <- 0 // ok
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<-c // ok
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x, ok := <-c // ok
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_, _ = x, ok
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cr <- 0 // ERROR "send"
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<-cr // ok
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x, ok = <-cr // ok
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_, _ = x, ok
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cs <- 0 // ok
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<-cs // ERROR "receive"
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x, ok = <-cs // ERROR "receive"
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_, _ = x, ok
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select {
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case c <- 0: // ok
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case x := <-c: // ok
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_ = x
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case cr <- 0: // ERROR "send"
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case x := <-cr: // ok
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_ = x
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case cs <- 0: // ok
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case x := <-cs: // ERROR "receive"
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_ = x
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}
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for _ = range cs {// ERROR "receive"
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}
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for range cs {// ERROR "receive"
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}
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close(c)
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close(cs)
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close(cr) // ERROR "receive"
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close(n) // ERROR "invalid operation.*non-chan type"
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}
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