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go/test/fixedbugs/issue15091.go
Ian Lance Taylor 7e64377903 cmd/compile: only support -race and -msan where they work
Consolidate decision about whether -race and -msan options are
supported in cmd/internal/sys. Use consolidated functions in
cmd/compile and cmd/go. Use a copy of them in cmd/dist; cmd/dist can't
import cmd/internal/sys because Go 1.4 doesn't have it.

Fixes #24315

Change-Id: I9cecaed4895eb1a2a49379b4848db40de66d32a9
Reviewed-on: https://go-review.googlesource.com/121816
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-08-21 03:38:27 +00:00

27 lines
942 B
Go

// errorcheck -0 -race
// +build linux,amd64 linux,ppc64le darwin,amd64 freebsd,amd64 netbsd,amd64 windows,amd64
// Copyright 2016 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.
package sample
type Html struct {
headerIDs map[string]int
}
// We don't want to see:
// internal error: (*Html).xyzzy autotmp_3 (type *int) recorded as live on entry, p.Pc=0
// or (now, with the error caught earlier)
// Treating auto as if it were arg, func (*Html).xyzzy, node ...
// caused by racewalker inserting instrumentation before an OAS where the Ninit
// of the OAS defines part of its right-hand-side. (I.e., the race instrumentation
// references a variable before it is defined.)
func (options *Html) xyzzy(id string) string {
for count, found := options.headerIDs[id]; found; count, found = options.headerIDs[id] {
_ = count
}
return ""
}