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go/test/escape_hash_maphash.go
Keith Randall 6ba0be1639 hash/maphash: mark call into runtime hash function as not escaping
This allows maphash.Hash to be allocated on the stack for typical uses.

Fixes #35636

Change-Id: I8366507d26ea717f47a9fb46d3bd69ba799845ac
Reviewed-on: https://go-review.googlesource.com/c/go/+/207444
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2019-11-16 20:31:45 +00:00

20 lines
368 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 hash/maphash.
package escape
import (
"hash/maphash"
)
func f() {
var x maphash.Hash // should be stack allocatable
x.WriteString("foo")
x.Sum64()
}