misc/cgo/testsanitizers: run libfuzzer tests in temp directory

The libFuzzer generated binary by default writes failure input
into the current directory. Set cmd.Dir to the temporary directory
so it won't write to GOROOT when running the test.

Change-Id: I3e4ce7e3f845be5c9f09511c36e7a9a396eafad2
Reviewed-on: https://go-review.googlesource.com/c/go/+/459556
Reviewed-by: Than McIntosh <thanm@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>

diff --git a/misc/cgo/testsanitizers/libfuzzer_test.go b/misc/cgo/testsanitizers/libfuzzer_test.go
index 6eebb17abf2f35694c0c74b7e38445bd96fb35b1..345751b9c761ffd2f4d7451802051d5b8ac53d5c 100644 (file)
--- a/misc/cgo/testsanitizers/libfuzzer_test.go
+++ b/misc/cgo/testsanitizers/libfuzzer_test.go
@@ -60,6 +60,7 @@ func TestLibFuzzer(t *testing.T) {
                        mustRun(t, cmd)
 
                        cmd = hangProneCmd(outPath)
+                       cmd.Dir = dir.Base()
                        outb, err := cmd.CombinedOutput()
                        out := string(outb)
                        if err == nil {