[Swarming] Isolate jsfunfuzz.

tools/jsfunfuzz/fuzz-harness.sh

 #!/bin/bash
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+# Copyright 2016 the V8 project authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
 
 # A simple harness that downloads and runs 'jsfunfuzz' against d8. This
 # takes a long time because it runs many iterations and is intended for
 # automated usage. The package containing 'jsfunfuzz' can be found as an
 # attachment to this bug:
 # https://bugzilla.mozilla.org/show_bug.cgi?id=jsfunfuzz
 
 JSFUNFUZZ_URL="https://bugzilla.mozilla.org/attachment.cgi?id=310631"
 JSFUNFUZZ_MD5="d0e497201c5cd7bffbb1cdc1574f4e32"
 
-v8_root=$(readlink -f $(dirname $BASH_SOURCE)/../)
+v8_root=$(readlink -f $(dirname $BASH_SOURCE)/../../)
 jsfunfuzz_dir="$v8_root/tools/jsfunfuzz"
+cd "$jsfunfuzz_dir"

[Michael Achenbach, 2016/02/18 15:01:42]

Enforce to run fuzzer relative to fuzzer dir, as there also the temporary w*
err* files below are created. If they are created in the workdir, where swarming
calls this, weird stuff can happen.

 
 if [ -n "$1" ]; then
   d8="${v8_root}/$1"
 else
   d8="${v8_root}/d8"
 fi
 
 if [ ! -f "$d8" ]; then
   echo "Failed to find d8 binary: $d8"
   exit 1
@@ skipping 47 matching lines @@
   archive="$2"
 else
   archive=fuzz-results-$(date +%Y%m%d%H%M%S).tar.bz2
 fi
 echo "Creating archive $archive"
 tar -cjf $archive err-* w*
 rm -f err-* w*
 
 echo "Total failures: $exit_code"
 exit $exit_code