diff options
-rwxr-xr-x | misc/cgo/testsanitizers/test.bash | 1 | ||||
-rw-r--r-- | misc/cgo/testsanitizers/tsan12.go | 35 |
2 files changed, 36 insertions, 0 deletions
diff --git a/misc/cgo/testsanitizers/test.bash b/misc/cgo/testsanitizers/test.bash index 3debb5499a..ea08f37432 100755 --- a/misc/cgo/testsanitizers/test.bash +++ b/misc/cgo/testsanitizers/test.bash @@ -215,6 +215,7 @@ if test "$tsan" = "yes"; then testtsan tsan7.go "CGO_CFLAGS=-fsanitize=thread CGO_LDFLAGS=-fsanitize=thread" "-installsuffix=tsan" testtsan tsan10.go "CGO_CFLAGS=-fsanitize=thread CGO_LDFLAGS=-fsanitize=thread" "-installsuffix=tsan" testtsan tsan11.go "CGO_CFLAGS=-fsanitize=thread CGO_LDFLAGS=-fsanitize=thread" "-installsuffix=tsan" + testtsan tsan12.go "CGO_CFLAGS=-fsanitize=thread CGO_LDFLAGS=-fsanitize=thread" "-installsuffix=tsan" testtsanshared fi diff --git a/misc/cgo/testsanitizers/tsan12.go b/misc/cgo/testsanitizers/tsan12.go new file mode 100644 index 0000000000..3e767eee1f --- /dev/null +++ b/misc/cgo/testsanitizers/tsan12.go @@ -0,0 +1,35 @@ +// Copyright 2017 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 hung when run under the C/C++ ThreadSanitizer. TSAN installs a +// libc interceptor that writes signal handlers to a global variable within the +// TSAN runtime instead of making a sigaction system call. A bug in +// syscall.runtime_AfterForkInChild corrupted TSAN's signal forwarding table +// during calls to (*os/exec.Cmd).Run, causing the parent process to fail to +// invoke signal handlers. + +import ( + "fmt" + "os" + "os/exec" + "os/signal" + "syscall" +) + +import "C" + +func main() { + ch := make(chan os.Signal) + signal.Notify(ch, syscall.SIGUSR1) + + if err := exec.Command("true").Run(); err != nil { + fmt.Fprintf(os.Stderr, "Unexpected error from `true`: %v", err) + os.Exit(1) + } + + syscall.Kill(syscall.Getpid(), syscall.SIGUSR1) + <-ch +} |