Index: llvm/trunk/lib/Fuzzer/test/afl-driver-extra-stats.test
===================================================================
--- llvm/trunk/lib/Fuzzer/test/afl-driver-extra-stats.test
+++ llvm/trunk/lib/Fuzzer/test/afl-driver-extra-stats.test
@@ -1,3 +1,5 @@
+REQUIRES: posix
+
 ; Test that not specifying an extra stats file isn't broken.
 RUN: unset AFL_DRIVER_EXTRA_STATS_FILENAME
 RUN: AFLDriverTest
Index: llvm/trunk/lib/Fuzzer/test/afl-driver-stderr.test
===================================================================
--- llvm/trunk/lib/Fuzzer/test/afl-driver-stderr.test
+++ llvm/trunk/lib/Fuzzer/test/afl-driver-stderr.test
@@ -1,3 +1,5 @@
+REQUIRES: posix
+
 ; Test that not specifying a stderr file isn't broken.
 RUN: unset AFL_DRIVER_STDERR_DUPLICATE_FILENAME
 RUN: AFLDriverTest