add comment for future
diff --git a/instrumentation/afl-llvm-dict2file.so.cc b/instrumentation/afl-llvm-dict2file.so.cc
index abf8e86..aab2066 100644
--- a/instrumentation/afl-llvm-dict2file.so.cc
+++ b/instrumentation/afl-llvm-dict2file.so.cc
@@ -195,6 +195,10 @@
Value * op = cmpInst->getOperand(1);
ConstantInt *ilen = dyn_cast<ConstantInt>(op);
+ /* We skip > 64 bit integers. why? first because their value is
+ difficult to obtain, and second because clang does not support
+ literals > 64 bit (as of llvm 12) */
+
if (ilen && ilen->uge(0xffffffffffffffff) == false) {
u64 val2 = 0, val = ilen->getZExtValue();
