[libFuzzer] Mark a test that infinite loops as unsupported

We need to investigate this, but for now it just causes too much
headache when trying to run these tests.

llvm-svn: 295900
diff --git a/llvm/lib/Fuzzer/test/lit.cfg b/llvm/lib/Fuzzer/test/lit.cfg
index 55391b8..85c95b4 100644
--- a/llvm/lib/Fuzzer/test/lit.cfg
+++ b/llvm/lib/Fuzzer/test/lit.cfg
@@ -40,6 +40,9 @@
 if sys.platform.startswith('win') or sys.platform.startswith('cygwin'):
   config.available_features.add('windows')
 
+if sys.platform.startswith('darwin'):
+  config.available_features.add('darwin')
+
 if config.is_posix:
   config.available_features.add('posix')
 
diff --git a/llvm/lib/Fuzzer/test/trace-malloc-2.test b/llvm/lib/Fuzzer/test/trace-malloc-2.test
new file mode 100644
index 0000000..7719b65
--- /dev/null
+++ b/llvm/lib/Fuzzer/test/trace-malloc-2.test
@@ -0,0 +1,8 @@
+// FIXME: This test infinite loops on darwin because it crashes
+// printing a stack trace repeatedly
+UNSUPPORTED: darwin
+
+RUN: LLVMFuzzer-TraceMallocTest -seed=1 -trace_malloc=2 -runs=1000 2>&1 | FileCheck %s --check-prefix=TRACE2
+TRACE2-DAG: FREE[0]
+TRACE2-DAG: MALLOC[0]
+TRACE2-DAG: in LLVMFuzzerTestOneInput
diff --git a/llvm/lib/Fuzzer/test/trace-malloc.test b/llvm/lib/Fuzzer/test/trace-malloc.test
index c951479..25694cc 100644
--- a/llvm/lib/Fuzzer/test/trace-malloc.test
+++ b/llvm/lib/Fuzzer/test/trace-malloc.test
@@ -3,8 +3,3 @@
 CHECK-DAG: MallocFreeTracer: STOP 0 1 (DIFFERENT)
 CHECK-DAG: MallocFreeTracer: STOP 1 0 (DIFFERENT)
 CHECK-DAG: MallocFreeTracer: STOP 1 1 (same)
-
-RUN: LLVMFuzzer-TraceMallocTest -seed=1 -trace_malloc=2 -runs=1000 2>&1 | FileCheck %s --check-prefix=TRACE2
-TRACE2-DAG: FREE[0]
-TRACE2-DAG: MALLOC[0]
-TRACE2-DAG: in LLVMFuzzerTestOneInput