mirror of
https://github.com/golang/go
synced 2024-09-23 23:20:14 -06:00
cmd/compile/internal/syntax: more tolerant handling of missing function invocation in go/defer
Assume that an expression that is not a function call in a defer/go statement is indeed a function that is just missing its invocation. Report the error but continue with a sane syntax tree. Fixes #23586. Change-Id: Ib45ebac57c83b3e39ae4a1b137ffa291dec5b50d Reviewed-on: https://go-review.googlesource.com/94156 Reviewed-by: Matthew Dempsky <mdempsky@google.com>
This commit is contained in:
parent
d3f6d11d84
commit
1a22738749
@ -758,7 +758,7 @@ func (p *parser) callStmt() *CallStmt {
|
||||
// already progressed, no need to advance
|
||||
cx = new(CallExpr)
|
||||
cx.pos = x.Pos()
|
||||
cx.Fun = p.bad()
|
||||
cx.Fun = x // assume common error of missing parentheses (function invocation)
|
||||
}
|
||||
|
||||
s.Call = cx
|
||||
|
24
test/fixedbugs/issue23586.go
Normal file
24
test/fixedbugs/issue23586.go
Normal file
@ -0,0 +1,24 @@
|
||||
// errorcheck
|
||||
|
||||
// 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.
|
||||
|
||||
// Test that we type-check deferred/go functions even
|
||||
// if they are not called (a common error). Specifically,
|
||||
// we don't want to see errors such as import or variable
|
||||
// declared but not used.
|
||||
|
||||
package p
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"math"
|
||||
)
|
||||
|
||||
func f() {
|
||||
var i int
|
||||
defer func() { fmt.Println() } // ERROR "must be function call"
|
||||
go func() { _ = math.Sin(0) } // ERROR "must be function call"
|
||||
go func() { _ = i} // ERROR "must be function call"
|
||||
}
|
Loading…
Reference in New Issue
Block a user