1 files changed, 1 insertions, 29 deletions
diff --git a/src/main/java/com/code_intelligence/jazzer/driver/FuzzTargetRunner.java b/src/main/java/com/code_intelligence/jazzer/driver/FuzzTargetRunner.java
index 3d99dcc5..6967b34f 100644
--- a/src/main/java/com/code_intelligence/jazzer/driver/FuzzTargetRunner.java
+++ b/src/main/java/com/code_intelligence/jazzer/driver/FuzzTargetRunner.java
@@ -99,8 +99,6 @@ public final class FuzzTargetRunner {
   private static final int LIBFUZZER_CONTINUE = 0;
   private static final int LIBFUZZER_RETURN_FROM_DRIVER = -2;
 
-  private static boolean invalidCorpusFileWarningShown = false;
-
   // Keep these options used in runOne (and thus the critical path) in static final fields so that
   // they can be constant-folded by the JIT.
   private static final Set<Long> ignoredTokens =
@@ -206,18 +204,7 @@ public final class FuzzTargetRunner {
       //     call to our custom mutator and skip the read entirely.
       //  2. Implement a InputStream backed by Unsafe to avoid the copyToArray overhead.
       byte[] buf = copyToArray(dataPtr, dataLength);
-      boolean readExactly = mutator.read(new ByteArrayInputStream(buf));
-
-      // All inputs constructed by the mutator framework can be read exactly, existing corpus files
-      // may not be valid for the current fuzz target anymore, though. In this case, print a warning
-      // once.
-      if (!(invalidCorpusFileWarningShown || readExactly || isFixedLibFuzzerInput(buf))) {
-        invalidCorpusFileWarningShown = true;
-        Log.warn(
-            "Some files in the seed corpus do not match the fuzz target signature. This indicates"
-                + " that they were generated with a different signature and may cause issues"
-                + " reproducing previous findings.");
-      }
+      mutator.read(new ByteArrayInputStream(buf));
       data = null;
       argument = null;
     } else if (useFuzzedDataProvider) {
@@ -361,13 +348,6 @@ public final class FuzzTargetRunner {
     return LIBFUZZER_CONTINUE;
   }
 
-  private static boolean isFixedLibFuzzerInput(byte[] input) {
-    // Detect special libFuzzer inputs which can not be processed by the mutator framework.
-    // libFuzzer always uses an empty input, and one with a single line feed (10) to indicate
-    // end of initial corpus file processing.
-    return input.length == 0 || (input.length == 1 && input[0] == 10);
-  }
-
   // Called via JNI, being passed data from LLVMFuzzerCustomMutator.
   @SuppressWarnings("unused")
   private static int mutateOne(long data, int size, int maxSize, int seed) {
@@ -586,14 +566,6 @@ public final class FuzzTargetRunner {
   }
 
   /**
-   * Returns whether the current mutator has detected invalid corpus files. If no mutator is used,
-   * returns false.
-   */
-  public static boolean invalidCorpusFilesPresent() {
-    return mutator != null && invalidCorpusFileWarningShown;
-  }
-
-  /**
    * Disables libFuzzer's fuzz target exit detection until the next call to {@link #runOne}.
    *
    * <p>Calling {@link System#exit} after having called this method will not trigger libFuzzer's