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-rw-r--r--instrumentation/afl-llvm-common.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/instrumentation/afl-llvm-common.h b/instrumentation/afl-llvm-common.h
index dee5f9fc..0112c325 100644
--- a/instrumentation/afl-llvm-common.h
+++ b/instrumentation/afl-llvm-common.h
@@ -8,6 +8,7 @@
 #include <list>
 #include <string>
 #include <fstream>
+#include <optional>
 #include <sys/time.h>
 
 #include "llvm/Config/llvm-config.h"
@@ -35,6 +36,12 @@ typedef long double max_align_t;
 #if LLVM_VERSION_MAJOR >= 11
   #define MNAME M.getSourceFileName()
   #define FMNAME F.getParent()->getSourceFileName()
+  #if LLVM_VERSION_MAJOR >= 16
+  // None becomes deprecated
+  // the standard std::nullopt_t is recommended instead
+  // from C++17 and onwards.
+  constexpr std::nullopt_t None = std::nullopt;
+  #endif
 #else
   #define MNAME std::string("")
   #define FMNAME std::string("")