Properly handle exceptions in cctests

test/fuzzer/regexp.cc

 // 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.
 
 #include <limits.h>
 #include <stddef.h>
 #include <stdint.h>
 
 #include "include/v8.h"
 #include "src/factory.h"
@@ skipping 44 matching lines @@
   i::Handle<i::String> two_byte =
       factory->NewStringFromTwoByte(i::Vector<const i::uc16>(two_byte_array, 6))
           .ToHandleChecked();
 
   for (int flags = 0; flags <= kAllFlags; flags++) {
     i::Handle<i::JSRegExp> regexp;
     {
       v8::TryCatch try_catch(isolate);
       i::MaybeHandle<i::JSRegExp> maybe_regexp =
           i::JSRegExp::New(source, static_cast<i::JSRegExp::Flags>(flags));
-      if (!maybe_regexp.ToHandle(&regexp)) continue;
+      if (!maybe_regexp.ToHandle(&regexp)) {
+        i_isolate->clear_pending_exception();
+        continue;
+      }
     }
     Test(isolate, regexp, one_byte, results_array);
     Test(isolate, regexp, two_byte, results_array);
     Test(isolate, regexp, factory->empty_string(), results_array);
     Test(isolate, regexp, source, results_array);
   }
 
   isolate->RequestGarbageCollectionForTesting(
       v8::Isolate::kFullGarbageCollection);
   return 0;
 }