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go/misc/cgo/testsanitizers/testdata/tsan.go
Bryan C. Mills 8f1e2d4ef7 misc/cgo/testsanitizers: move test source files into testdata directory
If we run 'go test ./...' in the misc module, we don't want to see
errors for these standalone files.

We could instead add +ignore tags to each file individually, but this
is exactly what a testdata directory is for.

Updates #30228

Change-Id: I7047ad888dd6aff701f5982d58b6a79f6a487c58
Reviewed-on: https://go-review.googlesource.com/c/163417
Run-TryBot: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Jay Conrod <jayconrod@google.com>
2019-02-22 21:58:00 +00:00

45 lines
700 B
Go

// Copyright 2015 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 main
// This program produced false race reports when run under the C/C++
// ThreadSanitizer, as it did not understand the synchronization in
// the Go code.
/*
#cgo CFLAGS: -fsanitize=thread
#cgo LDFLAGS: -fsanitize=thread
int val;
int getVal() {
return val;
}
void setVal(int i) {
val = i;
}
*/
import "C"
import (
"runtime"
)
func main() {
runtime.LockOSThread()
C.setVal(1)
c := make(chan bool)
go func() {
runtime.LockOSThread()
C.setVal(2)
c <- true
}()
<-c
if v := C.getVal(); v != 2 {
panic(v)
}
}