[llvm] r297919 - [libFuzzer] add a dummy LLVMFuzzerMutate to afl/afl_driver.cpp (https://github.com/google/oss-fuzz/issues/460)

[Kostya Serebryany via llvm-commits]

Author: kcc
Date: Wed Mar 15 18:54:40 2017
New Revision: 297919

URL: http://llvm.org/viewvc/llvm-project?rev=297919&view=rev
Log:
[libFuzzer] add a dummy LLVMFuzzerMutate to afl/afl_driver.cpp (https://github.com/google/oss-fuzz/issues/460)

Modified:
    llvm/trunk/lib/Fuzzer/afl/afl_driver.cpp

Modified: llvm/trunk/lib/Fuzzer/afl/afl_driver.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Fuzzer/afl/afl_driver.cpp?rev=297919&r1=297918&r2=297919&view=diff
==============================================================================
--- llvm/trunk/lib/Fuzzer/afl/afl_driver.cpp (original)
+++ llvm/trunk/lib/Fuzzer/afl/afl_driver.cpp Wed Mar 15 18:54:40 2017
@@ -238,6 +238,13 @@ static void maybe_duplicate_stderr() {
   }
 }
 
+// Define LLVMFuzzerMutate to avoid link failures for targets that use it
+// with libFuzzer's LLVMFuzzerCustomMutator.
+extern "C" size_t LLVMFuzzerMutate(uint8_t *Data, size_t Size, size_t MaxSize) {
+  assert(false && "LLVMFuzzerMutate should not be called from afl_driver");
+  return 0;
+}
+
 int main(int argc, char **argv) {
   fprintf(stderr, "======================= INFO =========================\n"
                   "This binary is built for AFL-fuzz.\n"