1 files changed, 47 insertions, 0 deletions
diff --git a/tests/src/test/java/com/example/HookDependenciesFuzzerHooks.java b/tests/src/test/java/com/example/HookDependenciesFuzzerHooks.java
new file mode 100644
index 00000000..d4f50dbf
--- /dev/null
+++ b/tests/src/test/java/com/example/HookDependenciesFuzzerHooks.java
@@ -0,0 +1,47 @@
+// Copyright 2022 Code Intelligence GmbH
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package com.example;
+
+import com.code_intelligence.jazzer.api.FuzzerSecurityIssueLow;
+import com.code_intelligence.jazzer.api.HookType;
+import com.code_intelligence.jazzer.api.MethodHook;
+import java.lang.invoke.MethodHandle;
+import java.lang.reflect.Field;
+import java.util.regex.Pattern;
+
+public class HookDependenciesFuzzerHooks {
+  private static final Field PATTERN_ROOT;
+
+  static {
+    Field root;
+    try {
+      root = Pattern.class.getDeclaredField("root");
+    } catch (NoSuchFieldException e) {
+      root = null;
+    }
+    PATTERN_ROOT = root;
+  }
+
+  @MethodHook(type = HookType.AFTER, targetClassName = "java.util.regex.Matcher",
+      targetMethod = "matches", targetMethodDescriptor = "()Z",
+      additionalClassesToHook = {"java.util.regex.Pattern"})
+  public static void
+  matcherMatchesHook(MethodHandle method, Object alwaysNull, Object[] alwaysEmpty, int hookId,
+      Boolean returnValue) {
+    if (PATTERN_ROOT != null) {
+      throw new FuzzerSecurityIssueLow("Hook applied even though it depends on the class to hook");
+    }
+  }
+}