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go/test/escape_goto.go
Matthew Dempsky adedf54288 [dev.typeparams] test: rename blank functions
This CL renames blank functions in the test/ directory so that they
don't rely on the compiler doing anything more than typechecking them.

In particular, I ran this search to find files that used blank
functions and methods:

$ git grep -l '^func.*\b_(' | xargs grep -n '^' | grep '\.go:1:' | grep -v '// errorcheck$'

I then skipped updating a few files:

* blank.go
* fixedbugs/issue11699.go
* fixedbugs/issue29870.go

  These tests specifically check that blank functions/methods work.

* interface/fail.go

  Not sure the motivation for the blank method here, but it's empty
  anyway.

* typeparam/tparam1.go

  Type-checking test, but uses "-G" (to use types2 instead of typecheck).

Updates #47446.

Change-Id: I9ec1714f499808768bd0dcd7ae6016fb2b078e5e
Reviewed-on: https://go-review.googlesource.com/c/go/+/338094
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-07-28 21:41:07 +00:00

45 lines
677 B
Go

// errorcheck -0 -m -l
// 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 escape analysis for goto statements.
package escape
var x bool
func f1() {
var p *int
loop:
if x {
goto loop
}
// BAD: We should be able to recognize that there
// aren't any more "goto loop" after here.
p = new(int) // ERROR "escapes to heap"
_ = p
}
func f2() {
var p *int
if x {
loop:
goto loop
} else {
p = new(int) // ERROR "does not escape"
}
_ = p
}
func f3() {
var p *int
if x {
loop:
goto loop
}
p = new(int) // ERROR "does not escape"
_ = p
}