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go/test/fixedbugs/issue33386.go
Robert Griesemer dca0d03b9c cmd/compile/internal/syntax: better error recovery after missing expression
Don't skip closing parentheses of any kind after a missing
expression. They are likely part of the lexical construct
enclosing the expression.

Fixes #33386.

Change-Id: Ic0abc2037ec339a345ec357ccc724b7ad2a64c00
Reviewed-on: https://go-review.googlesource.com/c/go/+/188502
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2019-08-27 15:46:41 +00:00

30 lines
752 B
Go

// errorcheck
// 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.
// Verify that we don't get spurious follow-on errors
// after a missing expression. Specifically, the parser
// shouldn't skip over closing parentheses of any kind.
package p
func _() {
go func() { // no error here about goroutine
send <-
}() // ERROR "expecting expression"
}
func _() {
defer func() { // no error here about deferred function
1 +
}() // ERROR "expecting expression"
}
func _() {
_ = (1 +) // ERROR "expecting expression"
_ = a[2 +] // ERROR "expecting expression"
_ = []int{1, 2, 3 + } // ERROR "expecting expression"
}