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author | Keith Randall <khr@golang.org> | 2019-11-16 07:12:53 -0800 |
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committer | Keith Randall <khr@golang.org> | 2019-11-16 20:31:45 +0000 |
commit | 6ba0be16391697bdaab7d8f836b66921977d5474 (patch) | |
tree | 07c3ef892dbce409c21fd4b60652a4d93f9f813d /test/escape_hash_maphash.go | |
parent | c20b71eb37889e7257453be152a994319c76d451 (diff) | |
download | go-6ba0be16391697bdaab7d8f836b66921977d5474.tar.gz go-6ba0be16391697bdaab7d8f836b66921977d5474.zip |
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>
Diffstat (limited to 'test/escape_hash_maphash.go')
-rw-r--r-- | test/escape_hash_maphash.go | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/test/escape_hash_maphash.go b/test/escape_hash_maphash.go new file mode 100644 index 0000000000..f8dcc5450d --- /dev/null +++ b/test/escape_hash_maphash.go @@ -0,0 +1,19 @@ +// 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() +} |